Stainless 904L

Annealing Procedure

1920-1990 F (1050-1090 C), rapid cooling.

Applications

Utility scrubber assemblies, acid and fertilizer production equipment.

Cold Workability

Although higher forces are required, 904L will respond in a similar fashion to other austenitic stainless steels like 304, 316 or 317. Most common operations can be successfully performed.

Hardening Procedure

This alloy does not respond to heat treatment.. It may only be hardened by cold reduction.

Hot Workability

Hot work should proceed after uniform heating to 2000-2200 F. Doe not work the material at less than 1800 F. Full annealing should follow any hot work to reattain maximum ductility and corrosion resistance.

Machinability

Slow speeds and positive feeds will minimize this alloy's tendency to work harden and glaze. Use chip breakers where possible to overcome problems with long draggy chips.

Principle Design Features

904L is an austenitic stainless steel designed for moderate to high corrosion resistance. Its low carbon content improves cleanliness and weld strength.

Weldability

Most common fusion and resistance methods may be employed. For maximum corrosion resistance, it is recommended to use filler metals of equal or higher alloy content.