ČSN 16 430 / 1.6580 / 30CrNiMo8
CZK 0
Characteristics
W. Nr. 1.6580 is an alloy steel with high hardenability, designed for highly stressed machine components. It is characterized by high toughness combined with high strength and excellent resistance to temper embrittlement. The steel also offers outstanding resistance to cyclic loading and impact. It is supplied in the quenched and tempered condition with a hardness of 280–320 HB. The steel is not suitable for welding.
Suitability
Highly loaded components for the automotive industry and mechanical engineering. Typical applications include highly stressed shafts, crankshafts, axles, gears and fastening components.
Chemical composition of steel W. Nr. 1.6580
| Steel grade | Chemical composition in % | Hardness in the state | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| soft annealed | heat treated | |||||||||
| C | Si max. | Mn | Cr | Mo | Ni | P max. | S max. | HB max. | HRC max. | |
| W. Nr. 1.6580 | 0,26-0,34 | 0,40 | 0,30-0,60 | 1,80-2,20 | 0,30-0,50 | 1,80-2,20 | 0,035 | 0,035 | 248 | 56 |
Heat treatment of steel W. Nr. 1.6580
| Way | Temeprature [°C] | Procedure | |
|---|---|---|---|
| Normalizing annealing | 850-880 | Cooling in air | |
| Soft annealing | 650-700 | Cooling in furnace | |
| Hardening | 830-860 | Cooling in oil | |
| Tempering | 540-660 | Min. holding time 1 hour | |
