24 July 2021 Ball Bearing Steel Bar
20NiCrMo2 Ball Bearing Steel Bar
DIN 1.6523 / 20NiCrMo2 Steel is an important alloy steel which is close to 1.5810 steel. The 20NiCrMo2 steel has half of the Nickel content and added a small amount of Molybdenum element. DIN 1.6523 steel also improves the content of Manganese, so it has better hardenability and strength than 18NiCr5-4.
20NiCrMo2 is a commonly used as alloy carburized steel, carburized after the surface has a very high hardness, wear resistance and contact fatigue strength, while the heart also retains good toughness, can withstand high impact load. 20NiCrMo2 is mainly used for automotive bearings and other impact-resistant, wear-resistant parts of the material.
Chemical composition % of steel 20NiCrMo2-2 (1.6523): EN 10084-2008
| C | Si | Mn | Ni | P | S | Cr | Mo |
| 0.17 - 0.23 | max 0.4 | 0.65 - 0.85 | 0.4 - 0.7 | max 0.025 | max 0.035 | 0.35 - 0.7 | 0.15 - 0.25 |
Mechanical properties of steel 20NiCrMo2-2 (1.6523)
| Section Size | 11mm | 30mm | 63mm |
| Tensile Strength Mpa | 980-1270 | 780-1080 | 690-930 |
| Yield Strength Mpa | ≥785 | ≥590 | ≥490 |
| Elongation % | ≥9 | ≥10 | ≥11 |
| Charpy Impact J | ≥41 | ≥41 | ≥41 |
| Hardness HB | 290-375 | 235-320 | 205-275 |
| Hardness HRC | 31-41 | 23-35 | 16-29 |