420J1
420J1 stainless steel is a higher carbon version of 410; like most non-stainless steels it can be hardened by heat treatment. It contains a minimum of 12 percent chromium, just sufficient to give corrosion resistance properties. Its best corrosion resistance is achieved when the metal is hardened and surface ground or polished.
| USA | JP | DE | EUR | CN |
|---|---|---|---|---|
| ASTM | JIS | DIN | EN | GB |
| 420 | SUS420J1 | X20Cr13 | 1.4021 | 20Cr13 |
Chemical Composition
The typical chemical composition is shown in the table below.
| Grade | Standard | 420J1 Chemical Composition | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| C | Si | Mn | Cr | Ni | P | S | Mo | Others | ||
| ≤ % | ≤ % | % | % | % | ≤ % | ≤ % | ≤ % | % | ||
| 420J1 | ASTM A240 | ≤ 0.15 | 1.0 | 1.0 | 12 - 14 | 0.75 | 0.04 | 0.03 | - | - |
| 1.4021 | EN 10088-2 | 0.16 - 0.25 | 1.0 | 1.0 | 12 - 14 | - | 0.04 | 0.015 | - | - |
| SUS420J1 | JIS G 4304 | JIS G 4305 | 0.16 - 0.25 | 1.0 | 1.0 | 12 - 14 | 0.6 | 0.04 | 0.03 | - | - |
Mechanical Properties
The mechanical properties are given in the table below.
| Grade | Standard | 420J1 Mechanical Properties | ||||
|---|---|---|---|---|---|---|
| Tensile Strength | Yield Strength 0.2% | Elongation >% | Hardness | |||
| (MPa) ≥ | (MPa) ≥ | HRB ≤ | HB ≤ | |||
| 420 | ASTM A240 | 580 | 350 | 15 | 96 | 217 |
| 1.4021 | EN 10088-2 | 600 | 450 | 12 | - | - |
| SUS420J1 | JIS G 4304 | JIS G 4305 | 520 | 225 | 18 | 97 | 223 |
Properties & Typical Applications
420J1 stainless steel applies to construction field,ships building industry,petroleum,war and electricity industries, food processing and medical industry,boiler heat exchanger, machinery and hardware fields.