UNS N08904 / 904L Stainless Steel Round Bar Diameter 5 - 350mm Bright Bar / Black Bar

904L Stainless Steel Chemical Composition (Max %):

904L Stainless Steel Mechanical Properties

904L Stainless Steel Properties

• Excellent resistance to stress corrosion cracking due to the presence of high amounts of nickel content.
• Pitting and crevice corrosion, intergranular corrosion resistance.
• Grade 904L is less resistant to nitric acid.
• Excellent formability, toughness and weldability, due to low carbon composition, it can be welded using any standard method, 904L cannot be hardened by heat treatment.
• Non-magnetic, 904L is an Austenitic stainless steel, therefor 904L possesses Austenitic structure properties.
• Heat Resistance, Grade 904L stainless steels offer good oxidation resistance. However, the structural stability of this grade collapses at high temperatures, particularly above 400°C.
• Heat Treatment, Grade 904L stainless steels can be solution heat-treated at 1090 to 1175°C, following by rapid cooling. Thermal treatment is suitable for hardening these grades.

904L Stainless Steel Applications

Because of above properties, 904L stainless steel pipe can be used in many applications, these range from utility scrubber assemblies to acid and fertilizer production equipment, pulp and paper processing, seawater cooling facilities. Used in processes containing sulfuric or phosphoric acids, 904L displays its excellent resistance to corrosion from those acids. The paper, gas, pharmaceutical and chemical industries also use 904L for its resistance and use to 400-450 degrees C. Alloy 904L tubing can be welded, machined, heat treated, annealed, hardened and cold worked for many purposes.

• Petroleum and petrochemical equipment, for example: Reactor
• Storage and transportation equipment of sulphuric acid, for example: heat exchanger
• Sea water treatment equipment, sea water heat exchanger
• Paper industry equipment, sulfuric acid, nitric acid equipment, making acid, pharmaceutical industry
• Pressure vessel
• Food equipment