Austenitic
Duplex Steel
Nickel Alloy
Cobalt Alloy

904L seamless tube steel tube

    The high chromium content promotes and maintains a passive film which protects the material in many corrosive environments.904L has a greater resistance to precipitation of ferrite and sigma phases on cooling and welding than other stainless steels containing molybdenum such as 316L and 317L. There is no risk of intercrystalline corrosion on cooling or welding due to the low carbon content. Its maximum service temperature is at 450°C.

This grade is particularly useful in control and instrumentation tubing applications where 316 and 317L are not suitable.

 Available tube product forms

◆Straight

◆Coiled

◆Seamless

Typical Applications

◆Seawater cooling equipment

◆Chemical processing for sulphuric, phosphoric and acetic acids

◆Gas washing

◆Condenser tubes

◆Control and instrumentation

◆Heat exchangers

Typical manufacturing specifications

◆ASTM A213

◆ASTM A269

◆ASTM A312

◆BS EN 10216 pt.5

Also individual customer specifications.

◆Industries predominantly using this grade           

◆Chemical processing

◆Oil and gas

◆Pharmaceutical