431 Stainless steel bar
We supply 431 stainless steel bars, a chromium-nickel martensitic stainless steel offering high strength and hardness combined with moderate corrosion resistance. Through heat treatment, this grade achieves excellent mechanical properties and is suitable for applications requiring wear resistance, magnetic permeability, and structural integrity in mildly corrosive environments.
Core Features
High Strength and Hardness: Can be heat-treated to achieve tensile strength exceeding 850 MPa and high hardness levels.
Moderate Corrosion Resistance: Performs well in atmospheric conditions, freshwater, and mild chemical environments.
Magnetic Properties: Exhibits consistent magnetic response, making it suitable for electromagnetic and motor applications.
Good Machinability and Weldability: Can be machined, ground, and welded with appropriate pre- and post-heat treatment procedures.
Applications
Ideal for pump shafts, valve stems, fasteners, mechanical tools, marine hardware, and components requiring magnetic permeability and durability.
We provide bars in rounds, squares, and hexagons, with options for heat treatment, precision cutting, grinding, and surface finishing. Full material certification compliant with ASTM A276, EN 10088-3, JIS G4303, and related standards is included to ensure quality and traceability.
Crafted from premium austenitic, martensitic, and duplex grades (304, 316, 410, 2205, etc.), our stainless steel bars deliver exceptional corrosion resistance, high strength, and precise machining performance. Available in round, square, hexagonal, and flat shapes with hot-rolled or cold-finished surfaces, these bars comply with ASTM A276, A479, and international standards. Ideal for machining parts, automotive components, construction hardware, and industrial tools. Custom sizes and grades supported.
Manufactured using precision hot rolling and cold drawing processes, our stainless steel bars undergo controlled annealing and straightening to ensure uniform mechanical properties and dimensional stability. Equipped with laser micrometers (±0.05mm tolerance) and ultrasonic testing for defect detection, we guarantee consistent quality in round, square, hexagonal, and flat shapes. Compliant with ASTM A276/A479 and international standards. Custom sizes and material grades (304, 316, 410, 2205, etc.) are supported.
In order to ensure product quality, we will arrange professional personnel to check product quality, packaging, weight, hardness, etc., according to customer requirements of product specifications, looking for high-quality and cheap cooperative factories in China, to provide customers with one-stop procurement services and quality assurance.
Excellent packaging: waterproof paper and plastic film + iron cover + at least three strapping straps + strapping straps fixed on iron or wood pallets can effectively protect products from corrosion and various climate changes during transportation. Generally speaking, we ship from Shanghai, Tianjin, Qingdao and Ningbo ports. We have worked with many experienced shipping companies for a long time to find the most suitable mode of transportation for you.