Chemical composition
| element | min% | max% | |
|---|---|---|---|
| C | 0,47 | 0,55 | |
| Si | 0 | 0,40 | |
| Mn | 0,60 | 0,90 | |
| P | 0 | 0,035 | |
| S | 0 | 0,035 | |
| Cr | 0 | 0,40 | |
| Mo | 0 | 0,10 | |
| Ni | 0 | 0,40 |
Comparative chart
international standards
| Nation | Standard |
| Australia | 1050 |
| Europa | C50E C50R |
| Germany | C50E Ck50 Cm50 |
| France | C50E XC 50 |
| Great Britan | 080 M 50 |
| Italy | C50 |
| Rumania | OLC 50AT OLC X |
| Russia | 50 |
| Spain | 2 C 50 |
| China | 50 |
| USA | 1049 1050 |