904L
About 904L Super Austenitic Stainless Steel
What is 904L Super Austenitic Stainless Steel?
904L super austenitic stainless steel is an acid resistant stainless steel containing low carbon, and high-nickel & molybdenum.
Grade 904L super austenitic stainless steel also referred to as the UNS N08904/W.Nr. 1.4539 stainless steel.
Grade 904L features good activation-passivation conversion ability, excellent corrosion resistance, which is especially pronounced in non-oxidizing acids such as sulfuric acid, acetic acid, formic acid, and phosphoric acid.
With its highly alloyed chemistry nickel and molybdenum, 904L provides good chloride stress corrosion cracking resistance, pitting and general corrosion resistance superior to 316L and 317L molybdenum enhanced stainless steels.
This stainless steel alloy is used extensively in the chemical process industry including the production of phosphate-based fertilizers.
Alloys 904L is available in all standard mill forms including pipe, rod, bar, plate, sheet, strip and foil products.
904L Super Austenitic Stainless Steel Standards
ASTM A240
ASTM A276
ASTM A479
ASTM A182
904L Super Austenitic Stainless Steel Chemical Composition
904L Super Austenitic Stainless Steel Data Sheet
904L Super Austenitic Stainless Steel Equivalent Grades
| ASTM/AISI | WERKSTOFF NR. | UNS | GOST | GB | JIS | DIN | EN | OR |
| Alloy 904L | 1.4539 | N08904 | – | 015Cr21Ni26SiMo5Cu3 | SUS904L | – | – | – |
904L Super Austenitic Stainless Steel Mechanical Properties
| Density | Melting Range | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.95 g/cm3 | 1300 – 1390°C | ≥490Mpa | ≥220Mpa | ≥35% |
904L Super Austenitic Stainless Steel Applications
904L Super Austenitic Stainless Steel Related Resources
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