Carbodur 7139 Hardened Blank – High-Performance Steel for Precision Machining
1.7139 (16MnCrS5) has high sulfur content and is therefore suitable for machining processing.
Properties
General
| Property | Value |
|---|---|
Density | 7.8 g/cm³ |
Dimension
| Property | Value | Comment |
|---|---|---|
Diameter | 63 mm | max. |
Mechanical
| Property | Value | Comment |
|---|---|---|
Elastic modulus | 210 GPa | |
Elongation | 9 - 11 % | A5 |
Hardness, Brinell | 138 - 237 [-] | Depending on the delivery condition |
Reduction of area | 35 - 40 % | |
Tensile strength | 640 - 1180 MPa | |
Yield strength | 440 - 635 MPa |
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 | 431 J/(kg·K) | ||
Thermal conductivity | 44 W/(m·K) |
Electrical
| Property | Value |
|---|---|
Electrical resistivity | 1.9e-07 Ω·m |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.14 - 0.19 % |
Chromium | 0.8 - 1.1 % |
Iron | Balance |
Manganese | 1 - 1.3 % |
Phosphorus | 0.025 % |
Silicon | 0.4 % |
Sulfur | 0.02 - 0.04 % |
Technological properties
| Property | ||
|---|---|---|
| Heat Treatment | Soft annealing: 650-700°C, Case Hardening: 880-980°C (Oil, Polymer), Direct hardening: 880-980°C (Oil, Polymer), Core Hardening: 860-900°C (Oil, Polymer), Surface Hardening: 780-820°C (Oil, Polymer), Tempering: 150-200°C (Air) | |
| Hot forming | It is formable at 850-1100°C. | |
| Processing history | Blank Hardened | |
| Welding | It is usually weldable. | |
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