| 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 |
904L is a high-alloy austenitic stainless steel with low
carbon content. The grade is intended for use under severe corrosive
conditions. It has been application proved over many years and was
originally developed to resist corrosion in dilute sulfuric acid. It is
standardized and approved for pressure vessel use in several countries.
Structurally, 904L is fully austenitic and is less sensitive to
precipitation ferrite and sigma phases than conventional austenitic
grades with high molybdenum content. Characteristically, due to the
combination of relatively high contents of chromium, nickel, molybdenum
and copper 904L has good resistance to general corrosion, particularly
in sulfuric and phosphoric conditions.
904L Chemical Composition %
Typical Applications Production and transport of sulfuric acid Metal pickling in sulfuric acid Production and concentration of phosphoric acid Use in seawater, brackish water, condensers, heat exchangers and pipe work in general Paper and allied industries Gas washing Chemical and pharmaceutical industries
Tensile requirements Tensile Strength (KSI) 70 Yield Strength (KSI) 25 KSI can be converted to MPA (Megapascals) by multiplying by 6.895.
| Place of Origin | Not Given |
| Minimum Order Quantity | Not Given |
| Supply Ability | Not Given |
| Packaging Details | Not Given |
| Delivery Details | Not Given |
Not Given
