Stainless Steel Flange ASTM A240 Gr F904L UNS N08904 heat exchanger boiler Valve
ASTM A240 Gr F904L UNS N08904 Stainless Steel Flange For heat exchanger boiler
YUHONG GROUP deal with steel pipe fittings already more than 33 years. Our client already cover more than 70 countries, Like Italy, UK, Gernmany, USA, Canada, Chile, Colombia, Saudi Arabia, Korea, Singapore, Austrial, Poland, France ...
Chemical Composition of A240 F904L Flanges
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Cu |
| SS 904L | 0.020 max | 2 max | 1.00 max | 0.040 max | 0.030 max | 19.00 – 23.00 | 4.00 – 5.00 max | 23.00 – 28.00 | 1.00 – 2.00 |
Mechanical Properties of A240 F904L Flanges
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.95 g/cm3 | 1350 °C (2460 °F) | Psi – 71000 , MPa – 490 | Psi – 32000 , MPa – 220 | 35 % |
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | KS | AFNOR | EN |
| SS 904L | 1.4539 | N08904 | SUS 904L | 904S13 | STS 317J5 | Z2 NCDU 25-20 | X1NiCrMoCu25-20-5 |
Stainless steel 904l flange is composed of unstable austenitic stainless steel material. The material is composed of 23% nickel, 19% chromium and carbon, silicon, copper, sulfur, manganese, phosphorus and 4% molybdenum. The flanges belong to ASTM A182 and ASTM A240 specifications.ASTM A182 F904L stainless steel flanges are highly corrosion resistant. Due to its high alloying-25% nickel and 4.5% molybdenum-904L provides excellent resistance to chloride stress corrosion cracking, pitting and general corrosion resistance, superior to 316L and 317L molybdenum-reinforced stainless steels. It also offers good resistance to other inorganic acids such as hot phosphoric acid as well as most organic acids.
Application
Oil and Gas
Chemical Industry
sour water services
marine
boiler
petrochemical
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