DIN 17230 Grade 100Cr2 Steel – Annealed for Spheroidized Carbides (AC)
100 Cr 2 is an anti-friction bearing steel that is hardened all the way through. It reaches surface hardnesses of approximately 62 HRC and is used for balls, rolls, and needles with thicknesses of up to 10mm.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 7.81 - 7.85 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | -100.0 °C | 217 GPa | |
20.0 °C | 212 GPa | ||
100.0 °C | 207 GPa | ||
200.0 °C | 199 GPa | ||
300.0 °C | 192 GPa | ||
400.0 °C | 184 GPa | ||
500.0 °C | 175 GPa | ||
600.0 °C | 164 GPa | ||
Poisson's ratio | 20.0 °C | 0.28 [-] | |
Shear modulus | 23.0 °C | 81 GPa | Typical for High Carbon Steel |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | -100.0 °C | 1.05E-5 1/K | |
20.0 °C | 1.15E-5 1/K | ||
100.0 °C | 1.21E-5 1/K | ||
200.0 °C | 1.27E-5 1/K | ||
300.0 °C | 1.32E-5 1/K | ||
400.0 °C | 1.36E-5 1/K | ||
500.0 °C | 1.4E-5 1/K | ||
600.0 °C | 1.44E-5 1/K | ||
Max service temperature | 500 °C | Typical for Carbon Steel | |
Melting point | 1289 - 1478 °C | Typical for High Carbon Steel | |
Specific heat capacity | -100.0 °C | 423 J/(kg·K) | |
20.0 °C | 461 J/(kg·K) | ||
100.0 °C | 479 J/(kg·K) | ||
200.0 °C | 499 J/(kg·K) | ||
300.0 °C | 517 J/(kg·K) | ||
400.0 °C | 536 J/(kg·K) | ||
500.0 °C | 558 J/(kg·K) | ||
600.0 °C | 587 J/(kg·K) | ||
Thermal conductivity | 20.0 °C | 39.6 W/(m·K) | |
100.0 °C | 41.6 W/(m·K) | ||
200.0 °C | 41.8 W/(m·K) | ||
300.0 °C | 40.3 W/(m·K) | ||
400.0 °C | 38.2 W/(m·K) | ||
500.0 °C | 36 W/(m·K) | ||
600.0 °C | 33.6 W/(m·K) | ||
Thermal diffusivity | 20.0 °C | 11 mm²/s | |
100.0 °C | 10.8 mm²/s | ||
200.0 °C | 10.1 mm²/s | ||
300.0 °C | 9.2 mm²/s | ||
400.0 °C | 8.1 mm²/s | ||
500.0 °C | 7 mm²/s | ||
600.0 °C | 5.7 mm²/s | ||
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 20.0 °C | 2.63E-7 Ω·m |
100.0 °C | 3.08E-7 Ω·m | |
200.0 °C | 3.78E-7 Ω·m | |
300.0 °C | 4.66E-7 Ω·m | |
400.0 °C | 5.69E-7 Ω·m | |
500.0 °C | 6.87E-7 Ω·m | |
600.0 °C | 8.26E-7 Ω·m | |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.9 - 1.05 % |
Chromium | 0.4 - 0.6 % |
Copper | 0.3 % |
Manganese | 0.25 - 0.45 % |
Nickel | 0.3 % |
Phosphorus | 0.03 % |
Silicon | 0.15 - 0.35 % |
Sulfur | 0.025 % |
Metal
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