Apvalus strypai
nuo Ø30mm iki Ø250mm
Description:
High strength carburizing steel.
Application:
heavily loaded gear wheels, high speed gear transmissions, shafts and other parts subject to high pressures
Chemical composition [%]
| C | Mn | Si | P | S | Cr | Ni | Mo | W | V | Co | Cu |
| 0,15-0,21 | 0,5-0,9 | max 0,4 | max 0,035 | max 0,035 | 1,5-1,8 | 1,4-1,7 | 0,25-0,35 | – | – | – | – |
Equivalents
| PN | W. nr | EN | AISI | Russia (GOST) | Other |
| 17HNM | 1.6587 | 18CrNiMo7-6 | – | – | – |
Processes
| welding | YES | |
| forging | YES | |
| rolling | YES | |
| nitriding | YES | |
| hardening | YES | temp. 840 – 870 [°C] |
| tempering | YES | temp. 630 – 650 [°C] |
Hardness
| after softening | 205 HB |