Chemical composition
| elemento | min% | max% | |
|---|---|---|---|
| C | |||
| Mn | |||
| P | |||
| S | |||
| N | |||
| Cu | |||
Comparative chart
international standards
| Nazione | Standard |
| Australia | T-200 |
| Europe | GG-20 |
| Germany | GG -20 |
| Frence | FGL200 |
| Great Britan | Gr 200 |
| Hungary | ov 200 |
| Italy | G20 |
| Polond | ZI 200 |
| Rumania | FC 200 |
| Japon | FC 20 |
| Russia | SC 20 |
| Spain | FG 20 |
| Sveden | SSOI 20-00 |
| China | HT 150 |
| USA | Class 25 |