400 Series Stainless Steel Plate

The 400 Series Stainless Steel Plate offers a cost-effective, magnetic alternative to austenitic grades with good corrosion resistance and high strength. These plates provide excellent heat resistance and are often hardenable, making them suitable for diverse industrial applications.

Product Parameters

Width: We supply widths from 1000mm to 2500mm.
Length: Standard lengths range from 2000mm to 12000mm.
Thickness: Available thicknesses span from 0.3mm to 100mm.
Regular sizes: Common dimensions include 1000x2000mm, 1219x2438mm, and 1500x3000mm.
Processing technology: We use hot rolling and cold rolling processes.
Execution standards: Products comply with ASTM A240, JIS G4304, and GB/T 3280 .
Packaging method: We secure plates on wooden pallets with steel straps and waterproof paper .
Supported surface treatments: Options include No.1, 2B, BA, No.4, HL, and Pickling finishes. We support various surface customizations to meet your specific project requirements.

Chemical Composition (Typical)

430 Grade: Carbon 0.12% max, Chromium 16.00-18.00%, Manganese 1.00% max, Silicon 1.00% max, Phosphorus 0.040% max, Sulfur 0.030% max, Nickel 0.75% max.
410 Grade: Carbon 0.15% max, Chromium 11.50-13.50%, Manganese 1.00% max, Silicon 1.00% max, Phosphorus 0.040% max, Sulfur 0.030% max, Nickel 0.60% max.
420 Grade: Carbon 0.16-0.25% (420J1) or 0.26-0.35% (420J2), Chromium 12.00-14.00%, Manganese 1.00% max, Silicon 1.00% max, Phosphorus 0.040% max, Sulfur 0.030% max, Nickel 0.60% max.
409L Grade: Carbon 0.03% max, Chromium 10.50-11.75%, Manganese 1.00% max, Silicon 1.00% max, Phosphorus 0.040% max, Sulfur 0.030% max, Nickel 0.60% max, Titanium 0.15-0.50%.
Iron makes up the balance for all grades.

Physical Properties (Typical)

Density: Approximately 7.7-7.8 g/cm³ .
Tensile Strength: 420-540 MPa depending on grade .
Yield Strength: 170-225 MPa depending on grade .
Elongation: 18-28% in 50mm .
Hardness: 160-247 HBW max depending on grade .
Magnetic properties: All grades are magnetic .

Grade Differences

430 Stainless Steel Plate is a ferritic grade with 16-18% chromium, offering good corrosion resistance and formability for indoor applications . It cannot be hardened by heat treatment.

410 Stainless Steel Plate is a martensitic grade with 11.5-13.5% chromium, providing high strength and hardness through heat treatment . It offers moderate corrosion resistance.

420 Stainless Steel Plate is a higher-carbon martensitic grade with 12-14% chromium, achieving greater hardness after heat treatment for cutting applications . It has lower toughness than 410.

409L Stainless Steel Plate is a titanium-stabilized ferritic grade with 10.5-11.75% chromium, offering excellent weldability and oxidation resistance for high-temperature applications . It provides good formability.

Product Applications

You will find the 430 Stainless Steel Plate in kitchen equipment like sinks, dishwasher linings, and range hoods, as well as architectural trim and refrigerator panels . The 410 Stainless Steel Plate suits applications requiring strength and heat resistance, such as pump shafts, valve components, and turbine blades .

The 420 Stainless Steel Plate works well for cutlery, surgical instruments, and industrial knives where edge retention matters .

The 409L Stainless Steel Plate serves automotive exhaust systems including mufflers, catalytic converters, and tailpipes due to its high-temperature performance . We can customize surfaces to suit any application, from the brushed finish for elevator interiors to the bright annealed finish for automotive trim.

Supported surface treatments: Options include No.1, 2B, BA, 2D, No.4, HL, and 8K finishes . We support various surface customizations to meet your specific project requirements.