904 stainless steel plate is a kind of austenitic stainless steel with very low carbon content and high alloying designed for environments with harsh corrosion conditions. It has better corrosion resistance than 316L and 317L, while taking into account both price and performance. Good value for money. Due to the addition of 1.5% copper, it has excellent corrosion resistance against reducing acids such as sulfuric acid and phosphoric acid. It also has excellent corrosion resistance against stress corrosion, pitting and crevice corrosion caused by complex ions, and has good resistance to intergranular corrosion. In pure sulfuric acid in the concentration range of 0-98%, the service temperature of 904L steel plate can be as high as 40 degrees Fahrenheit.
In pure acid in the concentration range of 0-85%, its corrosion resistance is very good. In industrial phosphoric acid produced by wet processes, impurities have a strong impact on corrosion resistance. Among all kinds of acids, 904L super austenitic stainless steel has better corrosion resistance than ordinary stainless steel. In strongly oxidizing nitric acid, 904L stainless steel has lower corrosion resistance than highly alloyed steels that do not contain silver. In hydrochloric acid, the use of 904L stainless steel plates is limited to lower concentrations of 1-2%.
In pure acid in the concentration range of 0-85%, its corrosion resistance is very good. In industrial phosphoric acid produced by wet processes, impurities have a strong impact on corrosion resistance. Among all kinds of acids, 904L super austenitic stainless steel has better corrosion resistance than ordinary stainless steel. In strongly oxidizing nitric acid, 904L stainless steel has lower corrosion resistance than highly alloyed steels that do not contain silver. In hydrochloric acid, the use of 904L stainless steel plates is limited to lower concentrations of 1-2%.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Cu |
| 904L | 0.020 max | 2.00 max | 1.00 max | 0.040 max | 0.030 max | 19.00 – 23.00 | 4.00 – 5.00 max | 23.00 – 28.00 | 1.00 – 2.00 |
Post time: Oct-30-2023