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AISI 420 Stainless Steel Coil
Available Configurations
Properties common to all products in this list
Key Features
AISI 420 Stainless Steel Coil (UNS S42000) is a martensitic stainless steel with 12-14% chromium and a carbon content of 0.15-0.40 wt%, engineered for high hardness after quench-and-temper heat treatment, excellent wear resistance, and good edge retention:
High Hardness After Quench-and-Temper Heat Treatment
AISI 420 Coil is engineered for high hardness after quench-and-temper heat treatment, with the elevated carbon content of 0.15-0.40 wt% enabling hardness levels well suited to cutting and wear applications.
Excellent Wear Resistance & Good Edge Retention
Excellent wear resistance and good edge retention make AISI 420 Coil ideally suited to the manufacture of cutlery, knife blade stock, industrial blades, and shear blade strips.
Moderate Corrosion Resistance in Non-Severe Environments
Moderate corrosion resistance in non-severe, dry, or mildly corrosive environments supports reliable performance in cutting and wear applications where environmental exposure is limited.
Continuous Strip Format for Automated Production
In coil form, AISI 420 provides a continuous strip ideally suited to automated forming, blanking, and heat treatment operations across high-volume production lines.
Precision Coil Springs for Mechanical Systems
Precision coil springs for mechanical systems benefit from AISI 420's combination of post-treatment hardness and the coil format's suitability for automated forming and heat treatment processing.
Industrial Applications
AISI 420 Stainless Steel Coil is used across cutlery, industrial blade, and mechanical spring sectors where high hardness and edge retention after heat treatment are required:
- ✦ Cutlery & Knife Blade Stock
- Used as cutlery and knife blade stock, where excellent wear resistance and good edge retention after quench-and-temper heat treatment deliver durable, sharp cutting performance.
- ✦ Industrial Blades & Shear Blade Strips
- Formed into industrial blades and shear blade strips, where high hardness after heat treatment combined with the continuous coil format supports efficient high-volume blade manufacture.
- ✦ Precision Coil Springs for Mechanical Systems
- Used in precision coil springs for mechanical systems, where the coil format's suitability for automated forming and heat treatment operations supports consistent spring performance across production runs.
- ✦ High-Volume Production Lines
- Applied across high-volume production lines where automated forming, blanking, and heat treatment operations benefit from AISI 420's continuous strip format and predictable hardening response.
- ✦ Machining Parameter & Quench-Temper Research
- Studied for machining parameter optimization, quenching and tempering effects on corrosion rate and hardness, and advanced forming processes for complex geometries in thin-section martensitic stainless alloys.
Material Properties
| Element | Value |
|---|---|
| Elongation at break( % ) | >12 |
| Modulus of elasticity( GPa ) | 200 |
| Tensile strength( MPa ) | 860 |
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 55 |
| Temperature coefficient( K⁻¹ ) | - |
| Element | Value |
|---|---|
| Melting point( C ) | 1450 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 460@23°C |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 24.9@100°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 10.3@0-100°C |
| Element | Value |
|---|---|
| Density( gcm⁻³ ) | 7.8 |
Tolerances
| Thickness | <0.01mm | ±25% |
|---|---|---|
| Thickness | 0.01mm - 0.05mm | ±15% |
| Thickness | >0.05mm | ±10% |
| Coil Width | <100mm | ±1mm |
| Coil Width | >=100mm | +2% / -1% |
| Length | +10% / -0% |