Chemical composition
| element | min% | max% | |
|---|---|---|---|
| C | 0,27 | 0,34 | |
| Si | 0 | 0,40 | |
| Mn | 0,50 | 0,80 | |
| P | 0 | 0,045 | |
| S | 0 | 0,045 | |
| Cr | 0 | 0,40 | |
| Mo | 0 | 0,40 | |
| Ni | 0 | 0,40 | 1 |
1 Cr+Mo+Ni<=0,63
Comparative chart
international standards
| Nation | Standard |
| Australia | 1030 |
| Bulgary | 30 |
| Czech/Slovak Republic | 12031 |
| Europa | C30 |
| Germany | Cm30 Ck30 |
| France | AF 50 XC 32 |
| Great Britan | 080M30 |
| Italy | C 30 |
| Polon | 30 |
| Rumania | OLC 30 |
| Russia | 30 |
| Spain | 1 C 30 |
| China | 30 |
| USA | 1030 (SAE) |