347/347H stainless steel is type of common austenitic stainless steels such as 304, 316 and 321 and is widely used in elevated temperature applications. Stainless steel 347 has excellent forming and welding qualities, and the addition of columbium and tantalum helps for exceptional intergranular corrosion resistance.
Alloy 347H is the higher carbon variant of the alloy, enabling enhanced creep resistance and for higher strength at temperatures above 537°C.
Stainless steel Grade 347 is similar to grade 321, but with slightly improved corrosion resistance in strongly oxidizing environments. Stainless steel 347 is essentially non-magnetic in the annealed condition and can only be hardened by cold working.
wilsonpipeline is a leading manufacturer and supplier of stainless steel grade 347/347H tube, pipe, fittings, flange, bars, fasteners, castings and others.
347/347H stainless steel pipes, stainless steel fittings, stainless steel flanges are popularly used in petroleum refineries, aircraft engine components, power generation, heat exchangers, pressure vessels, welded fabrications and other high heat applications.
Stainless Steel 347/347H Specifications
Stainless Steel 347/347H Seamless & Welded Pipe and Tubes: ASTM A312, ASTM A213, ASTM A249
Stainless Steel 347/347H Butt-weld Fittings & Flanges: ASTM A403, ASTM A182
Stainless Steel 347/347H Forgings: ASTM A182
Stainless Steel 347 Chemical Composition, %
0.08 max.
2.00 max.
0.75 max.
0.045 max.
0.03 max.
17.0 – 19.0
9.0-13.0
10 x C min.
(1.00 max.)
Stainless Steel 347H Chemical Composition, %
C
Mn
Si
P
S
Cr
Ni
Co + Ta
0.04 – 0.10
2.00 max.
0.75 max.
0.045 max.
0.03 max.
17.0 – 19.0
9.0-13.0
8 x C min.
(1.00 max)
Physical & Mechanical Properties of Stainless Steel 347/347H
347/347H
Density
7.96
Melting Range,℃
1450 °C
Elongation %
40
Tensile Strength (Mpa)
515
Yield Strength (Mpa)
205
Hardness (Brinell)
201
* Technical specifications included herein should be used as a guideline only
Stainless Steel 347/347H Pipes, Tubes / Tubing, and Butt Weld Fittings
347/347H stainless steel pipes and 347/347H stainless steel U tubes are available in both seamless and welded form in OD and NB sizes. In addition to standard sizes, which are available in stock, our specialty is to manufacture and supply custom size 347/347H cold drawn seamless tubes from our factory.
347/347H stainless steel pipes and 347/347H stainless steel U tubes can be offered in random lengths of up to 6meters long or cut to a specific length as ordered. We also offer a complete range of stainless steel 347/347H grade butt weld fittings including 347 elbow, 347 bends, 347 tees, reducers and caps.
Stainless Steel 347/347H Seamless, Welded Pipe/ Tube, and Fittings DimensionsOut diameterWall thicknessLength347 Pipe NB Sizes1/4 “ ~ 16”SCH 5 / SCH 10 / SCH 40 / SCH 80 / SCH 160Upto 6 Meters347 Butt Weld Fittings NB Sizes1/2″ ~ 12”SCH 5 / SCH 10 / SCH 40 / SCH 80 / SCH 160–347 Seamless Pipes (Custom Sizes)5.0mm ~ 203.2mmAs per requirementUpto 6 Meters347 Welded Pipes (in Stock + Custom Sizes)5.0mm ~ 1219.2mm1.0 ~ 15.0 mmUpto 6 Meters
For more information on this source, please visit: www.wilsonpipeline.com.
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