Apvalus strypai
nuo Ø12mm iki Ø252mm
Juostos ir kvadratai
plotis nuo 30mm iki 300mm
Description:
oil hardening cold work tool steel, with high ductility, wear resistant, with significant durability and impact resistance of a blade
Application:
punches, cold chisels, dies, knives for cutting wood and metals, bending dies, woodworking tools, guillotine shear blades, chisels for pneumatic jack hammers, shear blades
Chemical composition [%]
| C | Mn | Si | P | S | Cr | Ni | Mo | W | V | Co | Cu |
| 0,5-0,6 | 0,15-0,45 | 0,8-1,1 | max 0,03 | max 0,03 | 0,9-1,2 | max 0,35 | max 0,2 | 1,7-0,3 | 0,15-0,3 | – | max 0,35 |
Equivalents
| PN | W. nr | EN | AISI | Russia (GOST) | Other |
| NZ3 | 1.2550 | 55WCrV8 | ~S1 | ~6HW2S | K455 |
Processes
| welding | NO | |
| forging | YES | |
| rolling | YES | |
| nitriding | NO | |
| hardening | YES | temp. 900 – 920 [°C] oil |
| tempering | YES | temp. 200 – 320 [°C] |
Hardness
| after toughening | 57 HRC |
| after softening | 255 HB |