Apvalus strypai
nuo Ø20mm iki Ø500mm
Lakštinis plienas
storis nuo 3mm iki 140mm
Juostos ir kvadratai
plotis nuo 20mm iki 500mm
storis ≥60mm
storis ≥60mm
Description:
Chromium toughening steel; weldable and easily machinable,
Application:
axles, crankshafts, gear wheels, levers, connecting rods, components of bodies and tool grips, connecting elements, grinding wheels; after surface hardening for shafts, mandrels
Chemical composition [%]
| C | Mn | Si | P | S | Cr | Ni | Mo | W | V | Co | Cu |
| 0,36-0,45 | 0,5-0,9 | 0,17-0,37 | max 0,035 | max 0,035 | 0,8-1,2 | max 0,3 | max 0,1 | max 0,2 | max 0,05 | – | max 0,25 |
Equivalents
| PN | W. nr | EN | AISI | Russia (GOST) | Other |
| 40H | 1.7035 | 41Cr4 | 5140 | 40Ch | – |
Processes
| welding | NO | |
| forging | YES | |
| rolling | YES | |
| nitriding | YES | |
| hardening | YES | temp. 820 – 870 [°C] |
| tempering | YES | temp. 500 – 670 [°C] |
Hardness
| after toughening | max 55 HRC |
| after softening | 240 HB |
| Rm | 980 MPa |
| Re | 780 MPa |