1﹑Material Summary and Applications
904L is a super austenitic stainless steel which has high Ni & Mo. It contains high Ni, Mo, and Cu. It has good activation- passivation transition ability and low corrosion rate in passivation area （high Cr）
It also has good resistance to pitting, crevice(high Cr, Mo) and stress corrosion (high Ni).
Excellent resistance to corrosion in non-oxidation acid, such as sulfur, acetic acid, methane acid and phosphoric acid and good resistance to pitting in neutral chloride solution.
904L can be used in many ambient medium situation of petrochemical industry, such as BAC, acetic acid, methane acid, terephthalic acid, polrvinyl chloride and other environment.
Gas desulfurization equipment, like tower shell, fuel, and shutter spray system. Washers and fans used in organic acid process system. Sea water processing, paper pulp, sulfur, nitric acid and pharmacy. food equipment/jars/bottles, centrifugal machine, reactors used in pharmaceutical factory.
4、Available Size Range for seamless pipes and tubes
OD 6 ～ 219mm
WT 1.0～12.7 mm