Eigenschaften
Allgemein
| Property | Value |
|---|---|
Dichte | 7.79 g/cm³ Show Supplier Material materials with Dichte of 7.79 g/cm³ |
Mechanisch
| Property | Value |
|---|---|
Charpy impact energy, V-notch | 20 - 50 J Show Supplier Material materials with Charpy impact energy, V-notch of 20 - 50 J |
Elastizitätsmodul | 205 GPa Show Supplier Material materials with Elastizitätsmodul of 205 GPa |
Härte, Rockwell C | 36 - 40 [-] Show Supplier Material materials with Härte, Rockwell C of 36 - 40 [-] |
Streckgrenze | 600 - 900 MPa Show Supplier Material materials with Streckgrenze of 600 - 900 MPa |
Zugfestigkeit | 1000 - 1300 MPa Show Supplier Material materials with Zugfestigkeit of 1000 - 1300 MPa |
Thermisch
| Property | Value |
|---|---|
Spezifische Wärmekapazität | 460 J/(kg·K) Show Supplier Material materials with Spezifische Wärmekapazität of 460 J/(kg·K) |
Wärmeleitfähigkeit | 44.5 W/(m·K) Show Supplier Material materials with Wärmeleitfähigkeit of 44.5 W/(m·K) |
Chemical properties
| Property | Value |
|---|---|
Chrom | 1.8 - 2.5 % Show Supplier Material materials with Chrom of 1.8 - 2.5 % |
Eisen | Balance |
Kohlenstoff | 0.12 - 0.22 % Show Supplier Material materials with Kohlenstoff of 0.12 - 0.22 % |
Mangan | 0.5 - 1.5 % Show Supplier Material materials with Mangan of 0.5 - 1.5 % |
Molybdän | 0.5 - 1.5 % Show Supplier Material materials with Molybdän of 0.5 - 1.5 % |
Silizium | 0.3 - 1 % Show Supplier Material materials with Silizium of 0.3 - 1 % |
Vanadium | 0.05 - 0.35 % Show Supplier Material materials with Vanadium of 0.05 - 0.35 % |
Technological properties
| Property | ||
|---|---|---|
| Application areas | Bainidur® 7980 CN is an optimum solution for a lot of applications regarding economic, mechanical properties and process stability. Fields of applications are gears especially for e-mobility with high torque or large gears in wind mills. | |
| General machinability | Very good | |
| Heat Treatment | Soft annealing: 680-710°C - Carburizing: 880-980°C - Quenching: 920-960°C (Center), 860-900°C (Surface) | |
| Hot forming | The flow stress kf for hot forming may be calculated by a Hensel-Spittel type formula (A = 9.329, m1 = -0.00412, m2 = 0.0453, m3 = -0.00808). The diagram is valid for a deformation rate of 10 1/s. The recommended temperature range for hot forming is 1000 - 1250 °C. | |
| Processing history | The powder is produced by gas atomization. | |
| Welding | Due to the low carbon content Bainidur® 7980 CN has a superior weldability. The formation latent heat during the bainitic transformation reduces thermal stresses and therefor the risk of cracking. | |