Stainless Steel Alloy 904L

The high alloy austenitic stainless steel Type 904L is renowned for its corrosion resistance. This low carbon version of Type 904 stainless steel also provides consumers with the following advantages:

Non-magnetic

Superior corrosion resistance to Types 316L and 317L

Superior resistance to phosphoric, sulfuric, and acetic acids

Excellent resistance to crevice and stress corrosion failure

Superior formability and welding

Due to the numerous advantages of Type 904L stainless steel, it is used in a variety of applications in a wide range of important industries, including:

Equipment for seawater cooling

Processing of sulfuric, phosphoric, and acetic acids via chemistry

Heat transfer mechanisms

Condenser tubes

Gas cleaning

Management and instruments

Oil and gas sector

Pharmaceutical manufacturing

Installation of electrostatic precipitators

For a stainless steel to be classified Type 904L, it must have a specific chemical composition that comprises the following:

Fe balance

Ni 23-28%

Cr 19-23%

Mo 4-5%

Mn 2%

Cu S 1-2.0%

Si 0.7% 

S 0.3% 

N 0.1% 

P 0.03%

All of the Type 904L stainless steel offered by SSM conforms to standard production specifications, such as ASTM, EN, and others.