Durapur 3505 Bearing Steel – High Performance, Wear-Resistant Material for Automotive & Industrial Applications
1.3505 (100Cr6) is a bearing steel suitable for the manufacture of ball bearings, roller oil bearings and needle bearings. Durapur 3505 also used in mechanical engineering for components subject to wear, e.g. for pump shafts and for components in automobile injection systems. For this purpose, it is partially hardened on the surface.
Properties
General
| Property | Value |
|---|---|
Density | 7.8 g/cm³ |
Mechanical
| Property | Value | Comment |
|---|---|---|
Elastic modulus | 210 GPa | |
Hardness, Brinell | 207 - 300 [-] | Depending on the delivery condition |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 100 °C | 1.15e-05 1/K | for 20°C to the mentioned temperature |
200 °C | 1.25e-05 1/K | for 20°C to the mentioned temperature | |
300 °C | 1.33e-05 1/K | for 20°C to the mentioned temperature | |
400 °C | 1.39e-05 1/K | for 20°C to the mentioned temperature | |
Specific heat capacity | 460 J/(kg·K) | ||
Thermal conductivity | 33 W/(m·K) |
Electrical
| Property | Value |
|---|---|
Electrical resistivity | 1.9e-07 Ω·m |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.93 - 1.05 % |
Chromium | 1.35 - 1.6 % |
Iron | Balance |
Manganese | 0.25 - 0.45 % |
Molybdenum | 0.1 % |
Phosphorus | 0.025 % |
Silicon | 0.15 - 0.35 % |
Sulfur | 0.015 % |
Technological properties
| Property | ||
|---|---|---|
| Application areas | It is mainly used for the manufacture of ball bearings, roller oil bearings and needle bearings. Also used in mechanical engineering for components subject to wear, e.g. for pump shafts and for components in Automobile injection systems. | |
| Heat Treatment | Normalizing 870-900°C (Air), Soft annealing: 750-800°C (Oven), Stress Relieving: 600-650°C (Oven, Air), Quenching: 800-830°C (Water, Oil, Polymer) or 830-870°C (Oil, Polymer), Tempering: 150-180°C (Air) | |
| Hot forming | It is formable at 850-1100°C should then cooled more slowly or in still air. | |
| Processing history | Quenched and Tempered | |
| Welding | It is not weldable. | |
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