904L stainless steel pipe, 904L steel sheet:
Alloy 904L is a low carbon, high alloy Austenitic stainless steel that intended for use under severe corrosion conditions. Compared with 316L, 904L does not make much difference in strength or hardness. Its higher content of chromium, nickel and a small amount of copper to provide better corrosion and wear resistance.
UNS designation: UNS N08904
JIS Equivalent: QS 2025 MC
EN/DIN Numerical Equivalent: EN 1.4539
EN/DIN Symbolical Equivalent: X1NiCrMoCu25-20-5
904L Specifications:
904L seamless pipe/tube: ASTM B677, ASTM A312, ASTM A 213, ASTM A 269
904L welded pipe/tube: ASTM A358 904L Welded pipe
904L stainless steel plate/sheet/coils: ASTM A240, ASTM A480
904L pipe fittings: ASTM B366 bend, ASTM A403, ANSI B16.9
904L Stainless Steel Fasteners: ASTM A479
Chemical Composition:
|
Ni |
Cr |
Mo |
C max |
Mn max |
Si max |
Cu |
S |
P |
N max |
|
23.0-28.0 |
19.0-23.0 |
4.0-5.0 |
0.02 |
2.00 |
1.00 |
1.0-2.0 |
0.035 |
0.035 |
0.1 |
Mechanical Properties:
| Density, g/c㎡ | 8.0 |
| Melting range, ℃ | 1300-1390 |
| Tensile strength, min, Mpa | 490 |
| Yield strength, 0.2% offset, min, Mpa | 216 |
| Elongation, A5% | 35 |
| Hardness, (HR B) | 90 |
Applications:
- Petroleum and petrochemical equipment, such as reactors;
- Storage and transportation equipment of sulfuric acid, such as heat exchanger;
- Gas desulphurization equipment in power plant, such as absorber tower body, flue, door plate, internal parts, spray system;
- Scrubber and fan in an organic acid treatment system.
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