Quote:
Originally Posted by JJ Irani
Great info, pal. Do you have the composition details on the 904L grade?
Thanks - JJ  |
Chemical Formula an quote from my special steels book.
Technical formula for 904L X1NiCrMoCuN25-20-5.
Fe,Iron <0.02% C,Carbon 19-23% Chrome, 23-28% Nickel, 4-5% Mo,Molybdenum <2.0% Mn,Manganese. <1.0% Si,Silicon. <0.045% P,Phosphorus <0.035% S,sulphur 1.0-2.0% Cu,Copper
904L is a non-stabilised low carbon high alloy austenitic stainless steel. The addition of copper to this grade gives it greatly improved resistance to strong reducing acids, particularly sulphuric acid. It is also highly resistant to chloride attack - both pitting / crevice corrosion and stress corrosion cracking.
This type of steel is used mainly in these industries.
Processing plant for sulphuric, phosphoric and acetic acids.
Pulp and paper processing.
Components in gas scrubbing plants.
Seawater cooling equipment.
Oil refinery components.
Wires in electrostatic precipitaters.