ASTM 904L stainless steel plate

 

Q1: What is 904L stainless steel?

A1: A super austenitic stainless steel (UNS N08904) with high Cr (19%), Ni (25%), Mo (4%), and Cu (2%)-offering excellent corrosion resistance and good ductility.

 

Q2: Key mechanical properties (annealed condition)?

A2: Tensile strength ≥520 MPa, yield strength ≥210 MPa, elongation ≥35%, hardness ≤220 HB-superior ductility for forming/ welding.

 

Q3: What corrosive environments is it resistant to?

A3: Resists sulfuric acid, phosphoric acid, chlorides, seawater, and organic acids-ideal for aggressive chemical conditions.

 

Q4: Common industries/applications?

A4: Chemical processing, pharmaceutical equipment, desalination plants, oil & gas (acidic service pipelines, valves, tanks).

 

Q5: How does it compare to 316L and 254SMO?

A5: 904L has better corrosion resistance than 316L; 254SMO offers higher Mo content and superior pitting resistance. 904L is cost-effective for moderate-to-severe acid environments.