Non-alloy steel for hardening, with good machinability and suitability for the mechanical cutting. After surface hardening exhibits very high resistance to abrasion. Characterised by higher strength than grades 1.0503; C45; 45.
Non-alloy steel for hardening, with good machinability and suitability for the mechanical cutting. After surface hardening exhibits very high resistance to abrasion. Characterised by higher strength than grades 1.0503; C45; 45.
Unalloyed structural steel for components in general machine building and vehicle contruction. Medium loaded elements of machines and devices with increased resistance to abrasion in the engineering and automotive industries, such as spindles, axes, shafts, connectors, tool gripping jaws.
Chemical composition
| Element | C | Si | Mn | P | S | Cr | Mo | Ni | Cu |
| min | 0.52 | max | 0.60 | max | max | max | max | max | max |
| max | 0.60 | 0.40 | 0.90 | 0.045 | 0.045 | 0.40 | 0.10 | 0.40 | 0.30 |
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Equivalents
| Wr.Nr. | PN | EN | GOST | AISI |
| 1.0535 | 55 | C55 | 55 | 1055 |
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