420 Stainless Steel Coil

The 420 stainless steel coil represents a high-carbon variant of stainless steel, distinguished by its minimum 12% chromium content. This premium grade of stainless steel coil achieves the highest hardness rating (50HRC) among all 12% chromium stainless steel grades, making it exceptional for demanding applications.

Properties and Composition of 420 Stainless Steel Coil

As a martensitic stainless steel coil, Grade 420 offers superior characteristics compared to its 410 and 416 counterparts:

• Heat treatment capability for enhanced hardness
• Excellent ductility in annealed state
• Superior corrosion resistance when:
  • Polished
  • Surface ground
  • Hardened
• Maintained magnetic properties in both hardened and annealed conditions

For optimal performance, the 420 stainless steel coil requires full hardening to achieve maximum corrosion resistance properties.

Applications and Surface Finishes of 420 Stainless Steel Coil

The versatility of 420 stainless steel coil makes it resistant to various media:

• Fresh water exposure
• Alkali environments
• Mild acid conditions
• Food-grade applications

Surface finish options for 420 stainless steel coil include:

• HL finish: Ideal for building construction materials
• 2B finish: Perfect for:
  • Kitchen utensils
  • Medical equipment
  • Construction applications

Known by various designations (UNS S42000 Coil, DIN 1.4021 Coil, SUS 420 Coil), this versatile stainless steel coil grade can be customized to meet specific industry requirements. The combination of high corrosion resistance, enhanced strength, and superior hardness makes it a preferred choice across multiple industrial applications.