If you're looking for durable and corrosion-resistant steel sheets for industrial applications, manufacturing, or construction, AISI 420 stainless steel is widely used in numerous industries, including automotive, medical, and food processing.
what is AISI 420 stainless steel sheet?
AISI 420 stainless steel sheet is a hardenable, martensitic stainless steel containing at least 12% chromium, designed for high strength, hardness, and wear resistance. Known as a "surgical steel," it is often used for cutlery, dental/surgical instruments, pump shafts, and plastic molds due to its ability to be polished to a mirror finish and resist mild corrosion.
GNEE supplies AISI 420 martensitic stainless steel plates, manufactured in compliance with ASTM A240 / AMS 5506 standards. Combining high hardness, excellent wear resistance, and moderate corrosion resistance, this material is widely utilized in tooling and mold manufacturing, general machinery production, and food-contact applications.
In the annealed condition, the material exhibits a tensile strength of ≥790 MPa, a yield strength of ≥500 MPa, and an elongation of ≥15%. Following quenching and tempering treatments, its hardness can reach HRC 50–55, making it an ideal choice for manufacturing components that require high wear resistance and superior edge retention.
The AISI 420 stainless steel plates offered by GNEE are available in specifications covering thicknesses of 0.4–6.0 mm, widths of 1000–1300 mm, and lengths of 2000–3000 mm. Surface finish options include 2B, No. 4 (brushed), matte, and polished finishes. This material features excellent machinability, weldability, and polishability, and supports various processing techniques such as shearing, laser cutting, bending, and heat treatment.
Every product batch undergoes rigorous testing for hardness, flatness, chemical composition, and mechanical properties, and is accompanied by a comprehensive Mill Test Certificate (MTC).
AISI 420 stainless steel sheet Chemical Composition (%)
The carbon content in AISI 420 is higher than AISI 410, which allows for increased hardness after heat treatment.
| Grade | C | Mn | Si | P | S | Cr |
| AISI 420 | 0.15 min | 1.00 max | 1.00 max | 0.040 max | 0.030 max | 12.00 - 14.00 |
| 420J1 | 0.16 - 0.25 | 1.00 max | 1.00 max | 0.040 max | 0.030 max | 12.00 - 14.00 |
| 420J2 | 0.26 - 0.40 | 1.00 max | 1.00 max | 0.040 max | 0.030 max | 12.00 - 14.00 |
AISI 420 stainless steel cold rolled sheet Mechanical Properties (Typical)
AISI 420 is usually delivered in the Annealed state. The "Hardened & Tempered" values represent the material's potential after heat treatment.
| Tempering Temperature (°C) | Tensile Strength (MPa) | Yield Strength 0.2% Proof (MPa) |
Elongation (% in 50mm) |
Hardness Brinell (HB) |
|---|---|---|---|---|
| Annealed * | 655 | 345 | 25 | 241 max |
| 399°F (204°C) | 1600 | 1360 | 12 | 444 |
| 600°F (316°C) | 1580 | 1365 | 14 | 444 |
| 800°F (427°C) | 1620 | 1420 | 10 | 461 |
| 1000°F (538°C) | 1305 | 1095 | 15 | 375 |
| 1099°F (593°C) | 1035 | 810 | 18 | 302 |
| 1202°F (650°C) | 895 | 680 | 20 | 262 |
AISI 420 stainless steel sheet Physical Properties
These values are essential for thermal and structural calculations in mechanical engineering.
| Property | Value (at 20°C) |
| Density | 7.75 g/cm³ |
| Modulus of Elasticity | 200 GPa |
| Thermal Conductivity | 24.9 W/m·K |
| Specific Heat | 460 J/kg·K |
| Electrical Resistivity | 0.55 μΩ·m |
| Magnetic Property | Ferromagnetic (Magnetic) |
420 Grade Stainless Steel Sheet Price
| Description | Price |
| 2b 420 1250mm 1500mm Hot Rolled Stainless Sheet | US $ 1800-3800 / Ton |
| 420 Cold Rolled Hot Rolled Stainless l Plate Sheet | US $ 1.1-1.5 / kg |
| 420 Hr Hairline Stainless Sheet | US $ 1100-1500 / Ton |
| No. 1/Polishing 420 Stainless Sheet for Boat Board | US $ 1100-2300 / Piece |
| 420 Cold Rolled Stainless Sheet with PVC | US $ 1000-2000 / Ton |
| Custom Size Grade 420 Etching Stainless Color Sheet for Decoration | US $ 40 / Piece |
SS 420 Sheets and Plates Application Industries
Petrochemical Industry
Oil and Gas Industry
Chemical Industry
Power Plant Industry
Energy Industry
Pharmaceuticals Industry
Pulp & Paper Indusry
If you have project-specific requirements for 420 stainless steel plates, we welcome your orders. GNEE maintains a substantial inventory of popular products for you to choose from. Available in both hot-rolled and cold-rolled forms, our products can be customized to your specifications. For detailed chemical composition data or to request free samples, please contact our factory immediately. We offer competitive pricing and exceptional service.
Our products are packaged using waterproof paper and steel strapping, adhering to standard export packaging requirements for maritime transport. This packaging is suitable for various modes of transportation and can also be customized according to specific client requests.
Packaging
Standard Export Packaging for Stainless Steel Plates
1. Polished surface finish; 2. Steel strapping/bundling;
3. Wooden crate packaging; Wooden pallet packaging;
4. Containerized or bulk shipment; 5. Customized according to client requirements.
