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904L Nickel Alloy

The 904L nickel alloy is a high-alloy austenitic stainless steel with low carbon content. Similar with other frequently used CrNi austenitic steel, the alloy 904L has excellent resistance to pitting and crevice corrosion, stress corrosion cracking and intergranular corrosion. In addition to this, it is also readily to be fabricated and welded.

The low carbon alloy can be used for oil and petrochemical equipment such as reactor, storage and transportation equipment for sulfuric acid, flue gas desulfurization unit in power plant, scrubber and fan in organic acid processing system, etc.

Specifications of 904L Nickel Alloy
UNS W. Nr
N08904 1.4539
Chemical Compositions
Composition Ni Cr Mo Cu Fe C Mn P S
Content (%) Min. 24 19 4 1 Bal.
Max. 26 21 5 2 0.02 2 0.03 0.015
Mechanical Properties (Minimum value at 20℃)
Tensile Strength (σb/MPa) Yield Strength (σp0.2/MPa) Elongation (σ5/%)
490 215 35
Product Forms and Standards
Bar Forging Sheet/Strip Wire Pipe Welding wire
ASTM B 649 - ASTM B 625 ASTM B 649 ASTM B6 77
ASTM B 673
AWS A5.9 ER385
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