904L Super Austenitic Stainless Steel

904L (N08904, 14539) super austenitic stainless steel contains 14.0-18.0% chromium, 24.0-26.0% nickel, and 4.5% molybdenum. 904L super austenitic stainless steel is a low carbon high nickel and molybdenum austenitic stainless acid-resistant steel. Has good activation-passivation transformation ability, excellent corrosion resistance, good corrosion resistance in non-oxidizing acids such as sulfuric acid, acetic acid, formic acid, and phosphoric acid, and good in neutral chloride-containing media Resistance to pitting corrosion, and has good resistance to crevice corrosion and stress corrosion. It is suitable for sulfuric acid of various concentrations below 70°C. It also has good corrosion resistance in acetic acid at any concentration and temperature under normal pressure, and mixed acids of formic acid and acetic acid.

904L Stainless Steel Processing Performance

1. 904L Stainless Steel Welding

Like ordinary stainless steel, 904L can be welded by various welding methods. The most commonly used welding methods are manual arc welding or inert gas shielded welding. The electrode or wire metal is based on the composition of the base metal and has a higher purity. The content of molybdenum is higher than the base metal. Pre-heating is generally not required before welding, but in cold outdoor operations, in order to avoid condensation of water vapor, joint parts or adjacent areas can be uniformly heated. Note that the local temperature should not exceed 100°C, otherwise it will cause carbon accumulation and cause intergranular corrosion. Welding should use small linear energy, continuous and fast welding rate. Generally, no heat treatment is required after welding. If heat treatment is required, it must be heated to 110 ~ 1150℃ and then quickly cooled.

2. 904L Stainless Steel Processing

904L's machining characteristics are similar to other austenitic stainless steels, and there is a tendency of sticking knife and work hardening during processing. It is necessary to use a positive horn carbide tool and sulfide and chlorinated oil as the cutting coolant. The equipment and technology should be based on the premise of reducing work hardening. Avoid slow cutting speed and feed during cutting.

Quality 904L Plates and Sheets Hot Rolling Size:

1. Thickness 2-150mm
2. Width 1220-4200mm
3. Length 5000-18000mm
4. coil thickness ≤ 25mm
5. Payment: T/ T, L/ C
6. Min Quantity: 5MT
7. Heat Treatment/ Delivery state: Hot Rolled, CR, Normalized, Quenched, Tempering, TMCP, Electroslag Remelting Technology, etc.
8. Trade terms: FOB, CIF, CFR

9. Packageing Details: International standard