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Exhibition: BORU Fair 2015. Date: March 26-28, 2015. Fair Cycle: Every 2 years. Address: Istanbul Expo Center. Venue: Istanbul Dünya Ticaret Merkezi, 34149 Yesilköy, Istanbul, Turkey. Organizer: Ihlas Fuarcilik A.S. BORU Fair, an International Istanbul Tube Fair, is firstly held in 2005. Since then, it is held once every other year. By now, it has been the most famous and professional exhibition of pipeline and pipe fittings. As a show with great influence in Eurasian region, BORU Fair 2015 will attract many superb international supplier as well as purchasers from the Eurasian region. Turkey has a superior geographic location. Located between Asia and Europe, it is the only path to connect those two continents. Pipelines that transfer oil from Russia and Asian oil producing countries have to go through Turkey. Therefore, the pipeline industry in Turkey is prosperous. What is more, Turkey is also one of the markets that develop quickly in the world. Turkey itself also has a great demand on pipelines and pipe fittings for water system and construction use. 1. Tubes, Profiles and Accessories 1.1. Ferrous and alloy tubes, profiles 1.2. Steel tubes, profiles 1.3. Stainless steel tubes, profiles 1.4. Non-ferrous metal and alloy tubes, profiles 1.5. Aluminium tubes, profiles 1.6. Brass tubes, profiles 1.7. Copper tubes, profiles 1.8. Nickel tubes, profiles 1.9. Titanium tubes, profiles 1.10. Weldedsteeltubes 1.11. Seamlesssteeltubes 1.12. Precisiontubes 1.13. Coatedtubes 1.14. Conduits 1.15. Constructionaltubes,profiles 1.16. Linepipes 1.17. Flanges 1.18. Connectingpieces 1.19. Fittings 1.20. Other 2. Tube manufacturing machinery 2.1. Casting 2.2. Rolling, drawing, extruding 2.3. Welding, soldering 2.4. Heat treatment 2.5. Tube processing equipment 2.5.1. Forming, bending, straightening 2.5.2. Cutting, sawing, drilling 2.5.3. Galvanizing, coating 2.5.4. Grinding, polishing 2.5.5. Expanding, deburring 2.5.6. Other equipments 2.6. Duct winding machines 2.7. Other 3. Profile manufacturing machinery 3.1. Profile machinery 3.2. Bending machines 3.3. Roll forming machines 3.4. Working machines 3.5. Cutting machines 3.6. End forming machines 4. Process technology tools and auxiliaries 4.1. Dies 4.2. Rolls 4.3. Electrodes, solders 4.4. Saw blades 4.5. Lubricants 4.6. Auxiliary chemicals 4.7. Other 5. Specialist areas 5.1. Testing 5.2. Measuring 5.3. Control technology 5.4. Plant engineering and construction 5.5. Logistics 5.6. Recycling 5.7. Restoration 5.8. Sawblade grinding machines 5.9. Software 5.10. Consultingandservices 5.11. Associationsandpublications 5.12. Other We are industrial stainless steel flanges manufacturer that enjoys great reputation. It provides one-stop service including research, development, production and sale. you can also open wilsonpipeline’s site: https://www.wilsonpipeline.com to contact us.

Event Name: The 10th Pipeline Technology Conference and Exhibition. Start Date: 8 June 2015, Monday End Date: 10 June 2015, Wednesday Venue: Estrel Berlin Hotel and Convention Center City: Berlin, Germany Organizer: EITEP – Euro Institute for Information and Technology Transfer in Environmental Protection Tel: +49 511 90992-22 Fax: +49 511 90992-69 Website: http://www.pipeline-conference.com/ Email: fandrich@eitep.de Products: Stainless teel pipe products, steel pipe equipments, pipe processing equipments, pipe fitting products, pipe equipments, pipe fittings, etc.

Event Name: The 16th China Water Supply Drainage and Water Treatment Show 2015 Start Date: 9 April 2015, Thursday End Date: 11 April 2015, Saturday Venue: Beijing Agricultural Exhibition Center City: Beijing, China Organizer: China Environmental Protection Industry Association, Solid Waste Treatment and Utilization Committee Tel: 0086-10-8586 6179 Fax: 0086-10-8586 6179 Website: http://www.wswte.com/ Email: qifa1238@126.com Products: water supply and drainage, industrial water treatment, drinking equipments, the water environment and instruments, etc.

Exhibition: Flow Expo 2015. Date: 9 a.m. – 4 p.m., 21 March, 2015. Address: Long Beach Convention & Entertainment Center. Venue: 300 East Ocean Boulevard, Long Beach, California, America. Organizer: PHCC-GLAA. The Flow Expo is the largest PHC industry trade show in the western of United States. PHCC is a plumbing, heating, cooling contractors asssociation. Flow Expo is a leading event in United States Of America. It is presented by the PHCC of the Greater Los Angeles Area. The Flow Expo will be organized to focus on all the aspects of plumbing, heating and cooling industry. Products like pipelines, valves and pipe fittings will be displayed on the show. A lot of exhibitors from different parts of the country will participate in the Flow Expo. All the businesses that want to meet their fellow industry professionals and interested to win more customers are welcomed at the show. People will also get to know a wealth of information about the industry at the fair. We are industrial stainless steel flanges manufacturer that enjoys great reputation. It provides one-stop service including research, development, production and sale. you can also open wilsonpipeline’s site: https://www.wilsonpipeline.com/ to contact us.

Stainless Steel Grade 302 is a slightly higher carbon version than grade 304. It is widely found in strip and wire forms. It is a standard specification for chromium and chromium-nickel stainless steel flanges, pipe, and bar used for pressure vessels and for general applications. The following datasheet provides an overview of grade 302 stainless steel. Chemical Composition The chemical composition of grade 302 stainless steel (UNS S30200) is outlined in the following table.ElementContent (%)Chromium, Cr17-19Nickel, Ni8 – 10Manganese, Mn2Silicon, Si1.00Carbon, C0.15Sulfur, S0.03Phosphorous, P0.045 Mechanical Properties The mechanical properties of grade 302 (annealed strip) stainless steel are displayed in the following table.PropertiesMetricImperialTensile strength620 MPa89900 psiYield strength (@strain 0.200%)275 MPa39900 psiElastic modulus193 GPa28000 ksiPoisson’s ratio0.27-0.300.27-0.30Elongation at break (in 50 mm)55%55%Hardness, Brinell (converted from Rockwell B hardness)147147Hardness, Knoop (converted from Rockwell B hardness)164164Hardness, Rockwell B8585Hardness, Vickers (converted from Rockwell B hardness)147147 Other Designations Equivalent materials to grade 302 stainless steel (UNS S30200) are given below.AMS 5515AISI 302AMS 5516AMS 5636AMS 5637AMS 5688ASME SA240ASTM A167ASTM A240ASTM A276ASTM A313ASTM A314ASTM A368ASTM A473ASTM A478ASTM A479ASTM A492ASTM A493ASTM A511ASTM A550ASTM A554ASTM A666FED QQ-S-763FED QQ-S-766FED QQ-W-423ASTM A580MIL SPEC MIL-S-862SAE 30302SAE J230SAE J405AMS 5788DIN 1.4319MIL S-7720QQ S763QQ S766 Manufacturing Process Grade 302 Stainless Steel requires slow speeds, and high feeds will aid in overcoming this alloy’s tendency to work harden. It is recommended that chip breakers are used on all tooling due to the occurrence of gummy chips. While welding Stainless Steel grade 302, it is recommended that resistance or shielded fusion methods are used. The filler metals to be used are AWS E/ER308 or 312. Post weld annealing is performed when the chromium carbide needs to be dissolved so as to provide maximum resistance to inter-granular attack. Forging is ideally performed at these temperatures – 1149-1260°C (2100-2300°F). It is advisable not to forge below 927°C (1700°F). Forgings should be fully annealed after all operations so as to maintain full corrosion resistance. Hot working requires uniform heating to 1149°C (2100°F) while cold working helps to increase the hardness of this material. Stainless Steel Grade 302 is quite ductile and can be readily drawn, spun and upset. Cold working causes this alloy to gain magnetic properties, and hence post-fabrication annealing is required to recover maximum corrosion resistance and a non-magnetic condition. Annealing is performed between 1010 and 1121°C (1850 and 2050°F) with fast cooling so as to avoid precipitation of chromium carbides. Applications Grade 302 stainless steel is widely used in the stamping, spinning and wire forming industry. This alloy is also used in: Chemical processing, transport and storage Oil and gas exploration and offshore rigs Oil and gas refining Marine environments Pollution control equipment Pulp & paper manufacturing Chemical process plant Supplied Forms wilsonpipeline typically supplies 302 stainless steel in the following forms: 302 stainless steel Fittings & 302 stainless steel Flanges 302 stainless steel Pipe 302 stainless steel Plate 302 stainless steel Sheet 302 stainless steel U Tube 302 stainless steel Bar Source: wilsonpipeline For more information on this source please visit https://www.wilsonpipeline.com/ .

302 stainless steel bar, also known as UNS S30200 and Grade 302, is composed of .15% carbon, 17% to 19% chromium, 2% maximum of manganese, 8% to 10% nickel, traces of phosphorus, sulfur and silicon, with the balance being iron. The carbon content is slightly higher than that of 304, and does not respond to heat treatment. Stainless Steel 302 is very ductile and may be ready to be drawn, spun or upset. The hardness of Grade 302 is dramatically increased through cold working, which will also cause it to be magnetic. Industries that use Stainless Steel 302 include: Stamping Spinning Wire forming Products partially or completely constructed of Stainless Steel 302 include: Stainless Steel Pipes Cables Counters Stainless Steel Flanges Dishwashers Refrigerators Screens Springs Stainless Steel Pipe Fittings Washing machinesStocking Diameters ½” to 6” Material Lengths Up To 12’ BAR SPECIFICATIONSUNSTYPEAMSASTMFEDERAL Characteristics S30200 302 5636  5637A-276 A-314 A-479 A-493 A-666 QQ-S-763 Basic, general purpose stainless with good corrosion resistance and mechanical properties. 302 can be work hardened to achieve a higher tensile strength. Chemistry AnalysisCMNPSSICRNIMOCUOTHERM/NM.152..045.031.17. – 19.8. – 10..5NM Supplied Forms wilsonpipeline typically supplies 302 stainless steel in the following forms: 302 stainless steel Pipe Fittings & 302 stainless steel Flanges 302 stainless steel Pipes 302 stainless steel Plate 302 stainless steel Sheet 302 stainless steel U Tube 302 stainless steel Bar Established in 2008, wilsonpipeline Pipe Industry Co., Limited is a professional organizer and one-stop-shop supplier for steel piping system products, including steel pipe and tube, forged flange and fittings, butt-welding pipe fittings, elbow, tee, reducer, stub end, gaskets, fasteners, valves, Sanitary Services etc. in China. We have devoted to providing the best solutions of steel materials and industrial equipment for our respected customers. For more information on this source please visit: www.wilsonpipeline.com. Source: wilsonpipeline

302 Stainless Steel Technical Data Sheet Technical Information for 302 Stainless Steel Alloy UNS Number SAE Number  302  S30200  30302 GENERAL PROPERTIES Resistance to corrosion Prevention of product contamination Resistance to oxidation East of fabrication Excellent formability Beauty of appearance Ease of cleaning High strength with low weight Good strength and toughness at cryogenic temperatures Ready availability of a wide range of product forms Each alloy represents an excellent combination of corrosion resistance and fabricability. This combination of properties is the reason for the extensive use of these alloys which represent nearly one half of the total U.S. stainless steel production. Type 304 represents the largest volume followed by Type 304L. Types 302 and 305 are used in smaller quantities. These alloys are covered by a variety of construction or use of equipment manufactured from these alloys for specific conditions. Food and beverage, sanitary, cryogenic, and pressure-containing applications are examples. Past users of Type 302 are generally now using Type 304 since AOD technology has made lower carbon levels more easily attainable and economical. There are instances, such as in temper rolled products, when Type 302 is preferred over Type 304 since the higher carbon permits meeting of yield and tensile strength requirements while maintaining a higher level of ductility (elongation) versus that of the lower carbon Type 304. Type 304L is used for welded products which might be exposed to conditions which could cause intergranular corrosion in service. Type 305 is used for applications requiring a low rate of work hardening during severe cold forming operations such as deep drawing. RESISTANCE TO CORROSION In some cases, the low carbon Type 304L alloy may show a lower corrosion rate than the higher carbon Type 304 alloy. The data for formic acid, sulfuric acid and sodium hydroxide illustrate this. Otherwise, the Types 302, 304, 304L and 305 alloys may be considered to perform equally in most corrosive environments. A notable exception is in environments sufficiently corrosive to cause intergranular corrosion of welds and heat-affected zones on susceptible alloys. The Type 304L alloy is preferred for use in such media in the welded condition since the lower carbon level enhances resistance to intergranular corrosion. Supplied Forms wilsonpipeline typically supplies 302 stainless steel in the following forms: 302 stainless steel Pipe Fittings & 302 stainless steel Flanges 302 stainless steel Pipe 302 stainless steel Plate 302 stainless steel Sheet 302 stainless steel U Tube 302 stainless steel Bar PHYSICAL PROPERTIES Melting Point Density Specific Gravity Modulus of Elasticity in Tension  2550-2590° F 1399-1421° C  .285 lb/in³ 7.90 g/cm³  7.90  29 X 106 psi 200 Gpa MECHANICAL PROPERTIES Alloy Temper Tensile Strength Minimum  (psi) Yield Strength Minimum 0.2% offset  (psi) % Elongation in 2″ Minimum Notes302Annealed75,00030,00040 %–3021/4 Hard125,00075,00010 %–3021/2 Hard150,000110,0009 %–302Full Hard185,000140,0003 %– All values specified are approximate minimums unless otherwise specified. Values are derived from the applicable AMS and ASTM specifications. CHEMICAL PROPERTIES Alloy C Mn P S Si Cr Ni Mo Cu N Other302.152.00.045.0301.0017.00-19.008.00-10.00.75.75.10– All values are maximum values unless otherwise specified. Values are derived from applicable AMS and ASTM specifications. WELDING The austenitic stainless steels are considered to be the most weldable of the high-alloy steels and can be welded by all fusion and resistance welding processes. The Types 302, 304, 304L and 305 alloys are typical of the austenitic stainless steels. Two important considerations in producing weld joints in the austenitic stainless steels are: (1) preservation of corrosion resistance, and (2) avoidance of cracking. A temperature gradient is produced in the material being welded which ranges from above the melting temperature in the molten pool to ambient temperature at some distance from the weld. The higher the carbon level of the material being welded, the greater the likelihood that the welding thermal cycle will result in the chromium carbide precipitation which is detrimental to corrosion resistance. To provide material at the best level of corrosion resistance, low carbon material (Type 304L) should be used for material put in service in the welded condition. Alternately, full annealing dissolves the chromium carbide and restores a high level of corrosion resistance to the standard carbon content materials. Weld metal with a fully austenitic structure is more susceptible to cracking during the welding operation. For this reason, Types 302, 304, and 304L alloys are designed to resolidify with a small amount of ferrite to minimize cracking susceptibility. Type 305, however, contains virtually no ferrite on solidification and is more sensitive to hot cracking upon welding than the other alloys. HEAT TREATMENT These materials cannot be hardened by heat treatment. Applications 302 stainless steel is widely used in the stamping, spinning and wire forming industry. This alloy is also used in: Chemical processing, transport and storage Oil and gas exploration and offshore rigs Oil and gas refining Marine environments Pollution control equipment Pulp & paper manufacturing Chemical process plant Source: wilsonpipeline For more information on this source please visit https://www.wilsonpipeline.com/ .

Domestic oil price is faced with six consecutive depreciation at present. This is unusual in recent years. It is commonly regarded that drops of oil price is related to the market. Goldman Sachs insisted that as a bulk commodity, the price of oil is drove by supply-demand relationship. However, the market now also price now is also counted with future supply-demand relationship. On the other hand, the relentless strength of US dollars also greatly influences the oil price. Obviously, it is not possible to explain the continually drops on oil price with just economic factors. In the short run, the major oil consumers like China, India and Europe do not have shrinking demands on oil. It is should not be pessimistic for the market. What’s more, the whole issue will be clear when connecting it with current international political environment. The oil producing countries are always the victim of decreased oil price. Last week, two main energy exporters, Saudi Arabia and Russia, showed entirely different attitudes on the issue. Saudi Arabia said that it is OK for them to accept a low oil price at 80 USD for one or two years. This indicated obvious adjustment of Saudi Arabia. Putin declared that, the world economy will fall in collapse once the oil price is lower than 80 USD. Undoubtedly, Putin has felt dizzy due to the slump of oil price. 104 USD is thought as the financial balance for Russia. Russia is one of the biggest petroleum and gas exporters in the world. Its 52% of fiscal revenues come from oil and gas exports. Thus, Russia is the last one that expects decreased oil price. In recent years, Russia’s tough attitude on issues like Ukrainian crisis has prevented America from fighting back. Nevertheless, the U.S. has trump cards, among which oil war is also included. The quickly breakdown of oil price and even drop to 80 USD is the first battle of America-Russia oil war. As you can image, the oil export of Russia will not attract EU any more with falling oil price. Even if the relationship is remained, Russia will suffer from more grave economic shock under the dual actions of Western sanction and devalued ruble. In this petroleum war, Saudi Arabia plays an important role with its No. 1 oil storage in the world. America might have promised a lot to Saudi Arabia on politics this time to make it endure dropped oil price. It is worth mentioning that the price of any bulk commodities could not drop endless. The recently slump on international oil price do not means the beginning of low-oil-price epoch. The long-term low oil price is also inconsistent with American interest in the long run. After all, America is also becoming the biggest energy exported in the world. How long will the low price last? Maybe just like what Saudi Arabia said, they can bear the current price for one or two years.

Stainless Steel Grade 310 is a medium carbon austenitic stainless steel, for high temperature applications such as furnace parts and heat treatment equipment. It is used at temperatures up to 1150°C in continuous service, and 1035°C in intermittent service.Stainless Steel Grade 310S is a low carbon version of grade 310. Applications of Grade 310/310S Stainless Steel Typical Applications Stainless Steel Grade 310/310S is used in fluidised bed combustors, kilns, radiant tubes, tube hangers for petroleum refining and steam boilers, coal gasifier internal components, lead pots, thermowells, refractory anchor bolts, burners and combustion chambers, retorts, muffles, annealing covers, saggers, food processing equipment, cryogenic structures. Properties of Grade 310/310S Stainless Steel These grades contain 25% chromium and 20% nickel, making them highly resistant to oxidation and corrosion. Stainless Steel Grade 310S is a lower carbon version, less prone to embrittlement and sensitisation in service. The high chromium and medium nickel content make these steels capable for applications in reducing sulphur atmospheres containing H2S. They are widely used in moderately carburising atmospheres, as encountered in petrochemical environments. For more severe carburising atmospheres other heat resisting alloys should be selected. Grade 310 is not recommended for frequent liquid quenching as it suffers from thermal shock. The grade is often used in cryogenic applications, due to its toughness and low magnetic permeability. In common with other austenitic stainless steels, these grades cannot be hardened by heat treatment. They can be hardened by cold work, but this is rarely practiced. Chemcial Composition of Grade 310/310S Stainless Steel, The chemical composition of grade 310 and grade 310S stainless steel are summarised in the following table. Table 1. Chemical composition % of grade 310 and 310S stainless steel Chemical Composition310310SCarbon0.25 max0.08 maxManganese2.00 max2.00 maxSilicon1.50 max1.50 maxPhosphorus0.045 max0.045 maxSulphur0.030 max0.030 maxChromium24.00 – 26.0024.00 – 26.00Nickel19.00 – 22.0019.00 – 22.00 Mechanical Properties of Grade 310/310S Stainless Steel The mechanical properties of grade 310 and grade 310S stainless steel are summarised in the following table. Table 2. Mechanical properties of of grade 310/310S stainless steelMechanical Properties310/ 310SGrade 0.2 % Proof Stress MPa (min)205Tensile Strength MPa (min)520Elongation % (min)40Hardness (HV) (max)225 Physical Properties of Ferritic Stainless Steel The physical properties of grade 310 and grade 310S stainless steel are summarised in the following table. Table 3. Physical properties of grade 310/310S stainless steelPropertiesatValueUnitDensity 8000Kg/m3Electrical Conductivity25°C1.25%IACSElectrical Resistivity25°C0.78Micro ohm.mModulus of Elasticity20°C200GPaShear Modulus20°C77GPaPoisson’s Ratio20°C0.3Melting Rnage 1400-1450°CSpecific Heat 500J/kg°CRelative Magnetic Permeability 1.02Thermal Conductivity100°C14.2W/m°CCoefficient of Expansion0-100°C15.9/°C 0-315°C16.2/°C 0-540°C17/°C Forms of 310/310S Stainless Steel The forms of 310/310S stainless steel are: Stainless steel Plate Stainless steel Bar Stainless Steel Pipe & Stainless Steel Tube Stainless Steel Pipe Fittings (i.e. stainless steel flanges, slip-ons, blinds, weld-necks, lap joints, long welding necks, socket welds, elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples) Stainless Steel Sheet Stainless Steel Weld Wire. Fabrication of Grade 310/310S Stainless Steel Fabrication Stainless Steel Grade 310/310S is forged in the temperature range 975 – 1175°C. Heavy work is carried out down to 1050°Cand a light finish is applied to the bottom of the range. After forging annealing is recommended to relieve all stresses from the forging process. The alloys can be readily cold formed by standard methods and equipment. Machinability of Grade 310/310S Stainless Steel Machinability Stainless Steel Grade 310/310SS is similar in machinability to type 304. Work hardening can be a problem and it is normal to remove the work hardened layer by using slow speeds and heavy cuts, with sharp tools and good lubrication. Powerful machines and heavy, rigid tools are used. Welding of Grade 310/310S Stainless Steel Welding Stainless Steel Grade 310/310S is welded with matching electrodes and filler metals. The alloys are readily welded by SMAW (manual), GMAW (MIG), GTAW (TIG) and SAW. Electrodes to AWS A5.4 E310-XX and A 5.22 E310T-X, and filler metal AWS A5.9 ER310 are used. Argon is shielding gas. Preheat and post heat are not required, but for corrosion service in liquids full post weld solution annealing treatment is essential. Pickling and passivation of the surface to remove high temperature oxides are essential to restore full aqueous corrosion resistance after welding. This treatment is not required for high temperature service, but welding slag should be thoroughly removed. Heat Treatment of Grade 310/310S Stainless Steel Heat Treatment Type 310/310S is solution annealed by heating to temperature range 1040 -1065°C, holding at temperature until thoroughly soaked, then water quenching. Heat Resistance of Grade 310/310S Stainless Steel Stainless Steel Grade 310/310S has good resistance to oxidation in intermittent service in air up to 1035°Cand 1050°C in continuous service. The grades are resistant to oxidation, sulphidation and carburisation. Available Forms of Grade 310/310S Stainless Steel Austral Wright Metals can supply these grades as stainless steel flange, stainless steel bar and stainless steel rod, seamlessstainless steel tube and seamless stainless steel pipe, welded stainless steel tube and welded stainless steel pipe, forgings and forging billet, stainless steel tube and stainless steel wire, stainless steel pipe fittings. Corrosion Resistance Stainless Steel Grade 310/310S is generally not used for corrosive liquid service, although the high chromium and nickel content give corrosion resistance superior to grade 304. The alloy does not contain molybdenum, so pitting resistance is quite poor. Grade 310/310S will be sensitised to intergranular corrosion after service at temperatures in range 550 – 800°C. Chloride stress corrosion cracking may take place in corrosive liquids containing chlorides at temperatures exceeding 100°C. This information has been sourced, reviewed and adapted from materials provided by wilsonpipeline Pipe Industry Co., Limited. For more information on this source, please visit wilsonpipeline.

303 Stainless Steel is the most machinable of the austenitic grades of stainless steel. With the addition of Sulfur to this grade, the sulfur enhances the alloy’s machinability which is ordinarily difficult to machine. Applications: 303 Stainless Steel is widely used in manufacture of shafts, valve bodies, valve trim and food industry applications where 304 stainless would be normally used. 303 Stainless steel properties make it resistant to atmospheric corrosion, food products, sterilization solutions and many organic chemicals as well as a variety of inorganic chemicals. Chemistry AnalysisCarbon0.12%Manganese2.00%Phosphorus0.20%Sulfur0.15%Silicon1.00%Chromium17.00 – 19.00%Nickel8.00 – 10.00%Iron67.53 – 71.53% Corrosion Resistance for 303 Stainless Steel Pipe Intergranular corrosion may be compromised if the 303 stainless steel material is heated between 800 degrees F (427 c) and 1650 F (899 C) or cooled slowly through that range. The following table is for reference only, many factors can affect the corrosive resistance. A corrosion test for each application should be applied.Phosphoric acidModerateAcetic AcidModerateSodium HydroxideModerateSea WaterRestrictedSalt SprayModerateNitric AcidGoodSulfuric AcidModerateHumidityExcellent Typical Elevated Temperature Mechanical Properties 303 Stainless Steel annealed condition 1900f (1038C) Short Time Tensile TestsCreep TestsTest Temperature0.2% Yield StrengthUltimate Tensile Strength% Elongation in 2” (50.8mm)% Reduction in areaStress in 1% Creep in 10,000 HoursFCksiMpaksiMpaksiMpa702135241906215055––80042721145614213551––100053819131553793455171171200549171174531030547481400760149730207314521416008711069201383443–– Typical Room Temperature Mechanical Properties 303 Stainless Steel Annealed 1900f (1038c) 1” rd 303 stainless steel bar0.2% Yield StrengthUltimate Tensile Strength% Elongation in 2” (50.8mm)% Reduction of AreaBrinell HardnessImpact StrengthksiMpaksiMpaIzodCharp V-notch3524190621505516080 ft-lb70 ft-lb Heat Treatment for 303 SS Annealing: Heat to 1850/1950 F (1010/1066c) and quench in water. Brinell hardness approximately 160. Hardening: Cannot be hardened by heat treatment. Cold working this alloy increases its strength and hardness. Machinability: 303 Stainless Steel machines easily with a brittle chip. Grinding and polishing are possible with 303 Stainless Steel with satisfactory results. Our forging operation can increase the results for polishing this grade. Specifications: AMS 5640 ASTM A473 ASTM A582 EN10204 DIN3.1BShapes Manufactured: Flat Bars, Square Bars, Round Bars, 303 stainless steel flange, Hollows, Discs, Blocks and special Shapes. Send us a drawing to see how we can save you material and machining time! The information in this data sheet is for information only and should not be used for engineering. Source: wilsonpipeline.com For more information on this source please visit: https://www.wilsonpipeline.com .

Stainless steels type 1.4305 is popularly known as grade 303 stainless steel. Grade 303 stainless steel is the most readily machineable of all the austenitic grades of stainless steel. The machineable nature of Grade 303 stainless steel is due to the presence of Sulphur in thesteels composition. Whilst the Sulphur improves machining, it also causes a decrease in the corrosion resistance and a slight lowering of the toughness. The corrosion resistance of grade 303 stainless steel is lower than that for 304. The toughness is still excellent as with other austenitic grades. Property data given in this document is typical for 303 stainless steel flange product covered by ASTM A582. ASTM, EN or other standards may cover products sold by wilsonpipeline.com. It is reasonable to expect specifications in these standards to be similar but not necessarily identical to those given in this article. Chemical Composition of Stainless Steels Table 1. Typical chemical composition for stainless steels 303 (UNS S30300) % 303 C 0-0.10 Mn 0-2.0 Si 0-1.0 P 0-0.4 S 0-0.15 Cr 17-19 Ni 8-10 Fe balance Properties Composition of Stainless Steel 303 (UNS S30300) Mechanical Properties of Stainless Steel 303 (UNS S30300) Table 2. Typical mechanical properties for stainless steels alloy 303 Grade 303 Tensile Strength (MPa) 500-700 Proof Stress (MPa) 190 Min Elongation A5 (%) 35 Physical Properties of Stainless Steel 303 (UNS S30300) Table 3. Typical physical properties for stainless steels alloy 303 Property Value Density 8.03 kg/m3 Melting Point 1455°C Modulus of Elasticity 193 GPa Electrical Resistivity 0.072×10-6 Ω.m Thermal Conductivity 16.3 W/m.K Thermal Expansion 17.3×10-6 /K Alloy Designations Stainless steel grade 303 also corresponds to the following standard designations and specifications: Euronorm UNS BS En Grade 1.4305 S30300 303S31 58M 303 Corrosion Resistance of Stainless Steel 303 (UNS S30300) Sulphur additions to the composition act as initiation sites for pitting corrosion. This decreases the corrosion resistance of grade 303 stainless steel to less than that for 304. However corrosion resistance remains good in mild environments. In chloride containing environments over 60°C, grade 303 stainless steel is subject to pitting and crevice corrosion. Grade 303 stainless is not suitable for use in marine environments. Heat Resistance of Stainless Steel 303 (UNS S30300) Grade 303 stainless steel has good resistance to oxidation when intermittently exposed to temperature up to 760°C temperatures. It also has good oxidation resistance in continuous service to 870°C. This, however, is not recommended as 303 is sensitive to carbide precipitation with continuous use at 425-860°C. Fabrication of Stainless Steel 303 (UNS S30300) Fabrication of all stainless steels should be done only with tools dedicated to stainless steelmaterials. Tooling and work surfaces must be thoroughly cleaned before use. These precautions are necessary to avoid cross contamination of stainless steel by easily corroded metals that may discolour the surface of the fabricated product. Cold Working of Stainless Steel 303 (UNS S30300) Type 303 is not readily cold workable. Some cold working is possible but sharp bending should not be attempted. Hot Working of Stainless Steel 303 (UNS S30300) Fabrication methods, like forging, that involve hot working like should occur after uniform heating to 1149-1260°C. The fabricated components should then be rapidly cooled to ensure maximum corrosion resistance. Heat Treatment of Stainless Steel 303 (UNS S30300) Grade 303 stainless steel cannot be hardened by heat treatment. Solution treatment or annealing can be done by rapid cooling after heating to 1010-1120°C. Machinability Grade 303 stainless steel has excellent machinability. Machining can be enhanced by adhering to the following rules: Cutting edges must be kept sharp. Dull edges cause excess work hardening. Cuts should be light but deep enough to prevent work hardening by riding on the surface of the material. Chip breakers should be employed to assist in ensuring swarf remains clear of the work Low thermal conductivity of austenitic alloys results in heat concentrating at the cutting edges. This means coolants and lubricants are necessary and must be used in large quantities. Welding of Stainless Steel 303 (UNS S30300) The sulphur addition present in Grade 303 stainless steel results in poor weldability. If Grade 303 stainless steel must be welded the recommended filler rods or electrodes are grades 308L and 309 stainless steels. For maximum corrosion resistance, the welds must be annealed. Applications of Stainless Steel 303 (UNS S30300) Grade 303 stainless steel is used in applications that require parts to be heavily machined. These applications include: Nuts and bolts Screws 303 stainless steel pipe Aircraft fittings Bushings Shafts Supplied Forms Grade 303 stainless steel is typically supplied by wilsonpipeline.com in the following forms: Round bar Hexagonal bar 303 Stainless Steel Bar Source: wilsonpipeline.com For more information on this source please visit: https://www.wilsonpipeline.com

310 stainless steel bar, also known as UNS S31000 and Grade 310, contains the following primary elements: .25% maximum carbon, 2% maximum manganese, 1.5% maximum silicon, 24% to 26% chromium, 19% to 22% nickel, traces of sulfur and phosphorus, with the balance being iron. Type 310 is superior in most environments to 304 or 309 due to its relatively high chromium and nickel content. It exhibits a combination of good strength and corrosion resistance in temperatures up to 2100° F. Cold working will cause 309 to increase in hardness and strength, and it does not respond to heat treatment. Industries that use 310 Stainless Steel include: Aerospace General Machine Thermocouple Products partially or completely constructed of 310 Stainless Steel include: Baking oven fixtures Furnace components Heat treating boxes Hydrogenation parts Jet partsStocking Diameters ½” to 18” Material Lengths Up to 12’ UNSTYPEAMSASTMFEDERALCHARACTERISTICSS31000310–A-276 A-314QQ-S-763Higher alloy content improves basic characteristics, 310 Stainless Steel is similar to 309 with even greater corrosion resistance and oxidation at high temperatures. CHEMISTRY ANALYSISCMNPSSICRNIMOCUOTHERM/NM.082..045.03.3 – .824. – 26.19. – 22..5.5 NM Source: wilsonpipeline For more information on this source please visit: wilsonpipeline Pipe Industry .