904L is a high-alloy austenitic stainless steel with low carbon content. The grade is intended for use under severe corrosive conditions. It was originally developed to resist corrosion in dilute sulfuric acid and has been proven effective in this application over many years.
Structurally, 904L is fully austenitic and is less sensitive to precipitation ferrite and sigma phases than conventional austenitic grades with high molybdenum content. 904L has a good resistance to general corrosion, particularly in sulfuric and phosphoric conditions.
Availability – Stainless Steel 904L
Seamless Pipe :1/2” – 6”
Specifications – Stainless Steel 904L
| ASTM | B677, B366 |
| ASME | SB677, SB366 |
Chemical Composition – Stainless Steel 904L
| C | CR | CU | MN | MO | NI | P | S | SI |
|---|---|---|---|---|---|---|---|---|
| Max | Max | Max | Max | Max | ||||
| 0.02% | 19.0%- 23.0% | 1.0%- 2.0% | 2.0% | 4.0%- 5.0% | 23.0%-28.0% | 0.045% | 0.035% | 1.0% |
Typical Applications – Stainless Steel 904L
- Production and transport of sulfuric acid
- Metal pickling in sulfuric acid
- Production and concentrations of phosphoric acid
- Use in seawater, brackish water, condensers, heat exchangers and general pipe work
- Paper and allied industries
- Gas washing
Tensile Requirements – Stainless Steel 904L
Tensile Strength (KSI): 70
Yield Strength (KSI): 25
KSI can be converted to MPA (Megapascals) by multiplying by 6.895.