Steel card

1.4539/904L

VALBRUNA GRADE

AN4

STEEL TYPE

Corrosion Resistant Alloys

Profile shapes
  • Round EN 10060 / EN 10278
  • Flat EN 10058 / EN 10278
  • Square EN 10059 / EN 10278
  • Hexagonal EN 10278
  • Angle EN 10056
  • Bar steel, bright steel, wire, wire rod, billets, ingots, semi-finished products
Description of material

AN4 is multi-rule super austenitic steel with Nickel-Chromium, Molybdenum and Copper with high resistance to several, different, kinds of corrosion.

Applications

The structure and composition of AN4 offers an excellent resistance to several corrosive aggressive media. AN4 is suitable for the fabrication of many products such as flanges, valves, bolting, pump shafts, chains, fittings, food /beverages industry equipment, parts working in corrosive environments such as pulp and paper chemical processing, handling acid, pharmaceutical and medical devices, oil production systems, petrochemical industries and several marine and seawater applications.

Designations
Commercial nameAlloy 904L
International DesignationX1NiCrMoCu25-20-5
W.N.1.4539
UNSN08904
Chemical composition
Chemical elementCMnSiSPNiCrFeMoCuN
Minimum value %-----24%19%49%4%1,2%-
Maximum value %0,02%2%0,7%0,01%0,03%26%21%-5%2%0,1%
Mechanical properties
ConditionSubtypeRm [N/mm²]Rm [Ksi]Rp0,2% [N/mm²]Rp0,2% [Ksi]E4D [%]HBW
Solution AnnealedA490 min71 min220 min32 min35 min230 max
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