Stainless 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.
Specifications
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
Applications
Utility scrubber assemblies, acid and fertilizer production equipment.
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.
Welding
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.
Annealing
1920-1990 F (1050-1090 C), rapid cooling.
Hardening
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 | |