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Credibility ,Type 347 stainless steel has slightly improved corrosion resistance over type 321 stainless steel in strongly oxidizing environments. Type 347 stainless steel is stabilized with columbium, it is preferable for aqueous and low temperature environments due to its good resistance to intergranular attack. Both 347 stainless steel and 321 stainless steel offer good resistance to polythionic acid stress corrosion cracking, encountered in oil refineries. The high temperature oxidation resistance of 347 stainless steel is similar to that of 304 stainless steel. Useful to 1500°F.
Often in many product forms, the grain size and carbon content can meet both the 347S and 347H requirements. Appropriate weld fillers are AWS ER347 bare wire and E347 covered electrodes.
Cr |
Ni |
Cb + Ta |
C |
Si |
Mn |
P |
S |
Fe |
|
---|---|---|---|---|---|---|---|---|---|
MIN | 17.0 | 9.0 | Cb 10xc (Cb 8xC) |
0.04 | - | - | - | - | |
MAX | 19.0 | 13.0 | 1.0 | 0.08 | 0.75 | 2.0 | 0.045 | 0.03 | Balance |
347 Stainless Steel Flanges, 347 Stainless Steel Angle Bar, 347 Stainless Steel Tubes, 347 stainless steel Pipe Fittings, 347 Stainless Steel Bars
Density: 0.286 lb/inch3
Melting Point: 2550 - 2635°F
Temperature, °F | 70 | 212 | 932 |
Coefficient* of Thermal Expansion, in/in°F x 10-6 | - | 9.2 | - |
Thermal Conductivity Btu • ft/ft2 • hr • °F |
- | 112.5 | 147.7 |
Modulus of Elasticity, Dynamic psi x 106 | 28 | - | - |
Minimum Specified Properties, ASTM A 240
Tensile Strength, ksi | 75 |
0.2% Yield Strength, ksi | 30 |
Elongation, % | 40 |
Hardness Max, Brinell | 201 |
Typical Tensile and Impact Properties
Temperature, °F | 68 | 400 | 800 | 1000 | 1200 | 1350 | 1500 |
Ultimate Tensile Strength, ksi | 93.3 | 73.6 | 69.5 | 63.5 | 52.3 | 39.3 | 26.4 |
0.2% Yield Strength, ksi | 36.5 | 36.6 | 29.7 | 27.4 | 24.5 | 22.8 | 18.6 |
Established in 2008, Yaang Pipe Industry Co., Limited is a professional organizer and one-stop-shop supplier for steel piping system products, including stainless steel pipes and stainless steel tubes, stainless steel forged flanges and butt-welding stainless steel pipe fittings, stainless steel pipe fittings, stainless steel elbows, stainless steel tees, stainless steel reducer, stainless steel stub end, stainless steel gaskets, stainless steel fasteners, stainless steel valves, Sanitary Services etc. in China. We have devoted to providing the best solutions of steel materials and industrial equipment for our respected customers.
We supply not only commonly used stainless steel materials (SS304/L,SS316/L,SS321), but also duplex and super duplex steel 1.4547, 1.4462, 1.4410 (S31254,S31803,S32750,S32760), special austenite stainless 310S, 347H, 347, 317L, 904L... Yaang products are widely used in Shipbuilding, Nuclear power, Marine engineering, Petroleum, Chemical, Mining,Sewage treatment, Natural gas and Pressure vessels and other industries.
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Address:Longwan District, Wenzhou, Zhejiang Province, China.
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Yaang Pipe Industry Co., Ltd. is an international supplier of piping solutions for flange, butt welding fittings, socket welding fittings and threaded fittings. Our products are widely used in different industrial fields, including oil and gas, chemical industry, petrochemical industry, power plant, pulp and paper industry, environmental and water conservancy engineering, engineering projects, etc.