ss-904Stainless Steel 904L is stocked by 23 North American distributors and produced by 28 large mills. Distributors will offer small quantity buys while mills will generally only sell large quantities, with delivery times anywhere from 10 to 50 weeks depending on size and form required

This material is stocked primarily in Flat Rolled Products by 10 distributors but is also available to a lesser extent in Tubular Products, Wire Products, Piping Components, Bar Products, and Structurals.


The following specifications cover Stainless Steel 904L

Property Results

Related Metals:

Chemistry Data

Carbon 0.02 max
Chromium 19 – 23
Copper 1 – 2
Iron Balance
Manganese 2 max
Molybdenum 4 – 5
Nickel 23 – 28
Phosphorus 0.045 max
Silicon 1 max
Sulphur 0.035 max


Principal Design Features

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


Utility scrubber assemblies, acid and fertilizer production equipment.


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.


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.

Hot Working

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.

Cold Working

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.


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


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

Physical Data

Density (lb / cu. in.) 0.285
Specific Gravity 7.9
Specific Heat (Btu/lb/Deg F – [32-212 Deg F]) 0.12
Electrical Resistivity (microhm-cm (at 68 Deg F)) 480
Modulus of Elasticity Tension 28.4


Mechanical Data

Form Sheet
Condition Test Specimen Annealed
Temper 70
Tensile Strength 87
Yield Strength 40
Elongation 50
Reduction of Area 55
Rockwell B79