Case-Hardening Steels
Hard, wear-resistant surface with a tough core: low-carbon alloy steels for carburising.
Steel & Raw Materials
Case-Hardening Steels
Case-hardening steels are low-carbon alloy steels. During carburising, carbon is diffused into the surface and the part is quenched, producing a hard, wear-resistant case 0.2–1.5 mm deep over a tough, impact-resistant core.
Ideal for gears, pinions, camshafts, piston pins and bushings that work under both wear and impact loads.
| Grade | Mat. No. | Typical composition (%) | Typical use |
|---|---|---|---|
| 16MnCr5 | 1.7131 | C 0.14–0.19 · Mn 1.00–1.30 · Cr 0.80–1.10 | Gears, camshafts, pins |
| 20MnCr5 | 1.7147 | C 0.17–0.22 · Mn 1.10–1.40 · Cr 1.00–1.30 | Automotive gears, shafts |
| SAE 8620 | 1.6523 | C 0.18–0.23 · Ni 0.40–0.70 · Cr 0.40–0.60 · Mo 0.15–0.25 | Pinions, cams, bushings |
| 18CrNiMo7-6 | 1.6587 | C 0.15–0.21 · Cr 1.50–1.80 · Ni 1.40–1.70 · Mo 0.25–0.35 | Heavy-duty gearboxes |
Values are typical ranges from the relevant standards; exact values are provided with the mill certificate of each delivery.
Applications
- Gears and Pinions
- Camshafts
- Piston Pins
- Bushings and Pins
- Transmission Parts
- Construction Machinery Parts
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