420 is a martensitic stainless steel with 12% Chromium which is sufficient to give good corrosive resistance properties. .It’s best corrosive resistance is when hardened and surface is ground or polished.It has good ductility in the annealed condition but can be hardened up to 500HB (highest of the chromium grades). Martensitic grades are known for high hardness and allowances must be made for poor weldability and usually allowances for a final harden and temper treatment.
Steel is magnetic and welding is not recommended.
SS 420 Round Bar Equivalent Grades :
| STANDARD | UNS | WERKSTOFF NR. |
| SS 420 | S42000 | 1.4021 |
Grade | C | Si | Ni | S | Mn | P | Cr | |
SS 420 | min. | 0.15 | - | - | - | - | - | 12.0 |
max. | 0.36 | 1.00 | 1.00 | 0.03 | 1.00 | 0.04 | 14.0 |
| Grade | Tensile Strength (MPa) min | Elongation (% in 50mm) min | Yield Strength 0.2% Proof (MPa) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| SS 420 | 700 | 30 | 495 | 255 | 277 |
SS 420 Round Bar Application Industries
Our Stainless Steel 420 Round Bar are used in a wide range of applications and various industries. Below are a few of them:
Petrochemical Industry
Oil and Gas Industry
Chemical Industry
Power Plant Industry
Energy Industry
Pharmaceuticals Industry
Pulp & Paper Indusry
Food Processing Industry
Aerospace Industry
Refining Industry
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