1.4410 2507 S32750 Super Duplex Stainless Steel By wilsonpipeline.com

2507 S32750 Super Duplex Stainless Steel is super duplex stainless steel with 25% chromium, 4% molybdenum, and 7% nickel designed for demanding applications which require exceptional strength and corrosion resistance, such as chemical process, petrochemical, and seawater equipment. The steel has excellent resistance to chloride stress corrosion cracking, highthermal conductivity, and a low coefficient of thermal expansion.  Super duplex stainless steel grades have enhanced pitting and crevice corrosion resistance when compared with 300-series austeniticstainless steel or conventional duplex alloys. This can be attributed to the enhanced levels of chromium, molybdenum and nitrogen found in these materials. Alloy 2507 is the most common “super” duplex grade. Usage of Super Duplex 2507 should be limited to applications below 6000 F (3160 C). Extended elevated temperature exposure can reduce both the toughness and corrosion resistance of alloy 2507.The high chromium, molybdenum, and nitrogen levels provide excellent resistance to pitting, crevice, and general corrosion.the duplex structure provides 2507 with exceptional resistance to chloride stress corrosion cracking.  Super Duplex 2507 possesses excellent mechanical properties. Often a light gauge of 2507 material can be used to achieve the same design strength of a thicker nickel alloy. The resulting saving in weight can reduce the overall cost of fabrication.

Super Duplex Stainless Steel Corrosion Resistance, The high chromium and molybdenum content of Super Duplex Stainless Steelmakes it extremely resistant to uniform corrosion by organic acids like formic and acetic acid. Super Duplex also provides excellent resistance to inorganic acids, especially those containing chlorides.

High resistance to chloride stress corrosion cracking •High Strength •Superior resistance to chloride pitting and crevice corrosion  •Good general corrosion resistance •Suggested for applications up to 6000 F •Low rate of thermal expansion •Combination of properties given by austenitic and ferritic structure •Good weldability and workability 

2507 S32750 Super Duplex Stainless Steel Applications: 

1. 2507 S32750 Super Duplex Stainless Steel tubes and 2507 S32750 Super Duplex Stainless Steel pipes for production and handling of gas and oil,

2. 2507 S32750 Super Duplex Stainless Steel Pipes in desalination plants,

3. Mechanical and structural components,

4. Power industry FGD systems,

5. 2507 S32750 Super Duplex Stainless Steel Pipes in process industries handling solutions containing chlorides,

6. Utility and industrial systems, rotors, fans, shafts and press rolls where the high corrosion fatigue strength can be utilized,

7. Cargo tanks, vessels, piping and welding consumables for chemical tankers.

8. High-strength, highly resistant wiring.

Super Duplex Stainless Steels and their characteristics (1.4410) UNS S32750 2507 Super Duplex Stainless Steel Elbow 90 Degree

S32205 S31803(1.4462) Duplex Stainless Steel Pipes S32304 (1.4362) Duplex Stainless Steel Pipes

Product Information for 2507 S32750 Super Duplex Stainless Steel PipesSizesStandard TolerancesProductsODWallLengths and/or coilsGradesODWallLengthsPressure &Corrosion Tubing

Meets or exceeds requirements forwelded

Specification: ASTM-A7891/16″ (1.59 mm) to 4″ (101.6 mm)

Metric sizes available0.010″ (0.25 mm) to 0.220″ (5.59 mm)Random or cut lengths up to 40′ (12.2 m)

Coils to 1-1/2″ ODSuper Duplex 2507

<1-1/2" (38.1 mm) ±0.005" (0.13 mm)

1-1/2″ (38.1 mm) to 3″ (76.2 mm) ±0.010″ (0.25 mm)

3-1/2″ (88.9 mm) to 4″ (101.6 mm) ±0.015″ (0.38 mm)±10%Randoms up to +2″ (50.8 mm)

Cuts +1/8″ (3 mm) -0″

Coils to 80,000′ (24,384 m)Subsea Umbilical Tubing

Specifications: ASTM-A789 and ASTM-A7903/8″ (9.53 mm) to 1-1/2″ (38.1 mm)0.039″ (0.99 mm) to 0.125″ (3.18 mm)Cut lengths to 60′ (18.3 m)

Coils to 1-1/2″ OD*Super Duplex 2507±0.005″ (0.127 mm)±10%Coils to 80,000′ (24,384 m)

Physical Properties of 2507 S32750 Super Duplex Stainless Steel Pipes in the Annealed Condition at -20°F to +100°F Tensile StrengthYield Strength AlloyUNSSpec.psiMPaksipsiMPaksiElongation in 2 in. (min.) %Grain Size Req.Max. HardnessModulus of Elasticity (x106 psi)Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6)Thermal Conductivity (BTU-in/ ft2-h-°F)Super Duplex 2507S32950A789,A790100,00069010070,0004857020—30.5 Rc———Super Duplex 2507S32750A789, A790116,00080011680,0005508015—32 Rc27.57.298

Composition of 2507 S32750 Super Duplex Stainless Steel PipesGradeSuper Duplex 2507UNS DesignationS32750Carbon (C) Max.0.030Manganese (Mn) Max.1.20Phosphorous (P) Max.0.035Sulphur (S) Max.0.020Silicon (Si) Max.0.80Chromium (Cr)24.0–26.0Nickel (Ni)6.0–8.0Molybdenum (Mo)3.0–5.0Nitrogen (N)0.24–0.32Iron (Fe)Bal.Copper (Cu)0.50Other Elements—

Super Duplex 2507 Product RangeAlloyUNS DesignationWerkstoff NR.Specifications*Super Duplex 2507S327501.4410A/SA789, A/SA790

*Note: The specifications noted including ASTM, ASME, or other applicable authorities are correct at the time of publication. Other specifications may apply for use of these materials in different applications.

Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)