Apvalus strypai
nuo Ø16 mm iki Ø160 mm
Lakštinis plienas
storis nuo 0,5 mm iki 12 mm
Description:
Chromium-Vanadium spring steel;
Application:
Flat springs, leaf springs, coil and plate spring, torsion bars,
Chemical composition [%]
| C | Mn | Si | P | S | Cr | Ni | Mo | W | V | Co | Cu |
| 0,46-0,54 | 0,5-0,8 | 0,15-0,4 | max 0,03 | max 0,03 | 0,8-1,1 | max 0,4 | – | – | 0,1-0,2 | – | max 0,25 |
Equivalents
| PN | W. nr | EN | AISI | Russia (GOST) | Other |
| 50HF | 1.8159 | 50CrV4 | 6150 | 50ChFA | 15260 |
Processes
| welding | NO | |
| forging | YES | |
| rolling | YES | |
| nitriding | NO | |
| hardening | YES | temp. 840 – 860 [°C] |
| tempering | YES | temp. 480 – 520 [°C] |
Hardness
| after softening | 250 HB |
| Rm | 1280 MPa |
| Re | 1080 MPa |