首页 > Products > stainless steel sheet > 317L/347 Stainless steel sheet
Product Introduction：
About 317L material:317L stainless steel has stronger chemical corrosion resistance than conventional chromium nickel austenitic stainless steel such as 304 alloy.In addition, 317L alloy has higher ductility, stress corrosion resistance, compressive strength and high temperature resistance than conventional stainless steel. It is low carbon grade or L grade, which has anti sensitization performance during welding and heat treatment.
About 347material:347 stainless steel is an austenitic stainless steel containing chromium and nickel. This material is stabilized by the combination of col and tantalum. The addition of these elements promotes improved intergranular corrosion resistance. 347 stainless steel is non-magnetic and has corrosion resistance similar to 304 stainless steel.
In the strong oxidation environment, 347 has slightly better corrosion resistance to 321. Depending on the shape, plate, sheet or bar, the particle size and carbon content of carbon may meet the requirements of 347H and 347S.
Chemical Composition
Grade （材质） | C(%) （碳） | Si(%) （硅） | Mn(%) （锰） | P(%) （磷） | S(%) （硫） | Cr(%) （铬） | Ni(%) （镍） | Mo(%) （钼） | Cu(%) （铜） |
317L | ≤0.03 | ≤1.0 | ≤2.0 | ≤0.045 | ≤0.03 | 18.0-20.0 | 11.0-15.0 | 3.0-4.0 | ---- |
347 | ≤0.08 | ≤0.75 | ≤2.0 | ≤0.045 | ≤0.03 | 17.0-19.0 | 9.0-13.0 | -- | ---- |
Mechanical Property
Grade （材质） | tensile strength Mpa （抗拉强度） | Yield Strength Mpa （屈服强度） | Elongation (%) （伸长率） | rate of reduction in area (%) （断面收缩率） | Density (g/cm3) （密度） |
317L | ≥480 | ≥176 | ≥40 | ≥60 | 7.98 |
347 | ≥520 | ≥206 | ≥40 | ≥60 | 7.98 |
Specifications
Technical （工艺） | Thickness （厚度） | Width （宽度） | Finish （表面） | Origin （产地） |
Cold rolled | 0.8mm-6.0mm | Standard:1000mm 1219mm 1500mm Special:can be ordered | 2B / No.4 / HL / BA / Mirror/Checkered/Colored etc | TISCO / ZPSS . JISCO etc |
Hot rolled | 3.0mm-100.0mm | Standard:1500mm 1800mm 2000mm Special:can be ordered | No.1/No.4/HL/Mirror etc | TISCO / ZPSS / JISCO etc |
Applications
317L steel has good seawater resistance and SCC resistance compared with 316L steel, and is used for chemical ships, chemical products Reactors and other chemical equipment requiring high corrosion resistance.
347 stainless steel can be used in oil and gas, heater tubes, reactor equipment, and many other applications
Different Production Standards
Grade （材质） | GB/T 1220-2007 （国标） | ASTM （美标） | DIN （欧标） | JIS （日标） | KS （韩国） |
317L | 022Cr19Ni13Mo3 | 317L | 1.4438 | SUS317L | STS317L |
347 | 0Cr18Ni11Nb | 347 | 1.45505 | SUS347 | STS347 |
The advantage of 317L material
317L (00Cr19Ni13Mo3, UNS S31726) alloy is an austenitic stainless steel based on molybdenum. Compared with conventional Cr Ni austenitic stainless steel such as 304 alloy, it has stronger chemical corrosion resistance. In addition, 317L alloy has higher ductility, stress corrosion resistance, compressive strength and high temperature resistance than conventional stainless steel. It is low carbon grade or L grade, which has anti sensitization performance during welding and heat treatment.
The advantage of 347 material
1) It has excellent corrosion resistance equivalent to 304 stainless steel.
2) SUS has good intergranular corrosion resistance between 427℃and 816℃.
3) Even in the high temperature and strong oxidation environment at 816℃, it also shows certain creep resistance strength.
4) Easy to shape and weld.
5) It has good low-temperature toughness.
