Chemical composition
| element | min% | max% | |
|---|---|---|---|
| C | 0,53 | 0,58 | |
| Si | 0 | 0,35 | |
| Mn | 0,40 | 0,65 | |
| P | 0 | 0,020 | |
| S | 0 | 0,020 |
Comparative chart
international standards
| Nation | Standard |
| Australia | 1055 |
| Bulgary | 55 |
| Czech/Slovak Republic | 12060 |
| Europa | C55 C55E |
| Germany | Ck55 |
| France | AF 70 C54 XC55 H1 |
| Great Britan | 070 M 55 50 |
| Italy | C55 |
| Polon | 55 |
| Rumania | OLC 55 OLC 55A |
| Russia | 55 |
| Spain | 1 C 55 F.115 |
| Japan | S 55 C S 55 CM |
| China | 55 |
| USA | 1055 |