About 904L Stainless Steel
Grade 904L stainless steel is a non-stabilized austenitic stainless steel with low carbon content. This high alloy stainless steel contains added copper to improve resistance to strong reducing acids such as sulphuric acid. The steel offers excellent resistance to stress corrosion cracking and crevice corrosion.
Grade 904L stainless steel is non-magnetic and provides excellent formability, toughness, and weldability. While it contains high amounts of expensive ingredients like molybdenum and nickel, many applications now use cost-effective duplex stainless steel 2205 as an alternative.
904L stainless steels demonstrate excellent resistance to warm seawater and chloride attack. The high nickel content provides superior resistance to stress corrosion cracking, while copper addition develops resistance to sulphuric acid and other reducing agents in both aggressive and mild conditions.
The corrosion resistance of grade 904L falls between super austenitic grades (with 6% molybdenum content) and standard 316L austenitic grades. For maximum stress corrosion cracking resistance in critical environments, this steel grade requires solution treatment following cold working.
Our Processing Services
| Service | Thickness Range | Platform Size |
|---|
| Laser Cutting | 0.4 - 30.0mm | 2000×8000mm |
| Plasma Cutting | 10 - 80.0mm | 2000×10000mm |
| Bending | within 30mm | 2m, 6m, 10m length |
| Surface Process | within 12mm | HL, 8K, PVC Cover |
Our company operates a large stainless steel processing center covering 6,000 square meters. We offer comprehensive services including laser cutting, water cutting, hot rolling, punching, embossing, large shear bending, and dry casting straightening. Our finished production ensures high-quality, efficient stainless steel material processing and distribution services.
About Our Company
We specialize in the production and sales of superalloys, nickel base alloys, corrosion resistant alloys, precision alloys, cobalt-based alloys, special alloy steels, and special super austenitic stainless steels including duplex stainless steel. Our product range includes round steel, forgings, steel pipes, steel plates, precision steel belts, flanges, pipe fittings, and fasteners.
All materials are produced and tested in strict accordance with ASTM/ASME, GB, JIS, and other international standards. We maintain substantial inventory of nickel base alloys, high temperature alloys, and imported high temperature alloy steel plates in various specifications. We also supply imported welding wires and rods to support timely delivery for desulfurization and denitration engineering projects, petroleum, and petrochemical equipment.
Our manufacturing facilities include vacuum induction furnaces, semi-vacuum medium frequency induction furnaces, middle and high temperature heat treatment furnaces, electroslag remelting furnaces, free forging hammers (6 tons, 4 tons, 1 tons), hot rolling cold rolling steel pipe equipment, precision steel strip cold rolling machines, annealing furnaces, and round bar hot rolling cold drawing machines.
Quality assurance is supported by comprehensive testing facilities including furnace direct reading spectrometers, spectrophotometers, chemical analysis laboratories, mechanical performance laboratories (with universal testing machines and hardness testing machines), metallographic laboratories, and ultrasonic nondestructive testing equipment. With over ten years of R&D and production experience, our products are recognized for high quality and reliability, earning praise from customers worldwide.
