420 Stainless Steel Coil

420 stainless steel coil is a high-carbon, martensitic stainless steel that offers a combination of high strength, hardness, and moderate corrosion resistance.

 

Due to its high chromium content, with excellent polishability and wear resistance, 420 stainless steel is commonly used in applications where high hardness and moderate corrosion resistance are required.

 

 

 

Chemical Composition

Chromium (Cr): 12.0-14.0%

Carbon (C): 0.15-0.40%

Manganese (Mn): ≤ 1.0%

Silicon (Si): ≤ 1.0%

Phosphorus (P): ≤ 0.04%

Sulfur (S): ≤ 0.03%

 

Mechanical Properties

Tensile Strength: 540-700 MPa (78-102 ksi)

Yield Strength: 275 MPa (40 ksi)

Elongation: 15% (in 50 mm)

Hardness: 500-700 HV (varies with heat treatment)

 

Heat Treatment

420 stainless steel coil can be heat-treated to achieve desired mechanical properties. Annealing and quenching/tempering are common heat treatment methods. Annealing is typically performed at 750-850°C, followed by air cooling. Quenching and tempering involve heating the material to a critical temperature, rapidly cooling it, and then reheating it to a lower temperature for tempering.

 

 

• Cutlery and Kitchenware: Ideal for knife blades, scissors, surgical instruments, and other cutting tools.
• Industrial Equipment: Used in pump shafts, valves, and other components requiring high wear resistance.
• Automotive Industry: Applied in various parts such as trim, molding, and structural components.
• Medical Devices: Utilized in surgical instruments and medical tools due to its high polishability and strength.
• Tooling: Employed in the manufacture of molds, dies, and other high-precision tools.
• Sporting Goods: Used in the production of durable and wear-resistant sports equipment.
• Precision Machinery: Due to its high hardness and wear resistance, 420 stainless steel coil is suitable for making precision parts in machinery.

 

 

Versatile in applications from precision machinery to medical instruments

• High Hardness: Can be heat treated to achieve high levels of hardness and strength.
• Moderate Corrosion Resistance: Provides adequate resistance to atmospheric corrosion and mild chemical environments.
• Wear Resistance: Excellent wear resistance, making it suitable for cutting and tooling applications.
• Polishability: Capable of achieving a high polish finish, ideal for aesthetic and functional applications.
• Magnetic Properties: Magnetic in both annealed and hardened conditions, suitable for applications requiring magnetism.
• Versatility: Suitable for a wide range of industrial, medical, and consumer applications.

 

 

• Uncompromising Quality: Our stainless steel materials undergo strict quality control, and each shipment is rigorously inspected and tested to ensure that our 304 stainless steel coils meet your exact specifications and exceed your expectations.
• Competitive Pricing: Our commitment to affordability ensures you receive top-quality products at the best prices in the market.
• Expert Customer Support: Our knowledgeable customer service team is always ready to assist you with product selection, technical support, and after-sales service.
• Fast and Reliable Delivery: We have sufficient stock of 304 stainless steel coils and efficient transportation to ensure timely delivery of your order.

 

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