904L stainless steel

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

Available Forms and 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

NiCrMoC maxMn maxSi maxCu SPN max

Mechanical Properties

Melting range,℃1300-1390
Tensile strength, min, Mpa490
Yield strength, 0.2% offset, min, Mpa216
Elongation, A5%35
Hardness, (HR B)90


  • 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.

Alloy 904L is widely used in oil and gas industrial, marine industrial, chemical processing and nuclear industrial. LKALLOY is one of the best vendors of 904L stainless steel pipe, plate and pipe fittings. We are the leading in supplying superb quality Alloy 904L, which is well known for their excellent strength and good corrosion resistance.

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