الفولاذ الكربوني
| Internal Standard | Equivalent Grades | |||||
| BS | DIN | IS | EN | SAE/AISI | JIS | |
| EN15B | 150M36 | 36Mn5 | 37Mn2, 37C15 | EN15B | 1536 | – |
| EN32B | – | CK15 | C14 | EN32B | 1015,1016,1018 | – |
| SAE1038 | – | CK38 | – | – | 1038 | – |
| EN43C | – | – | C50 | EN43C | 1050 | – |
| CK45 | – | CK45 | 45C8 | 1045 | – | – |
| EN9 | 070M55 | CK55 | C55 | EN9 | 1055 | – |
| C35 | – | C35 | 35C8, C35Mn75 | – | 1035 | – |
| EN42 | – | CK75 | 80C6 | EN42 | 1074 | – |
| EN42B | – | C67 | 65C6 | EN42B | 1065 | – |
| EN43 | 080M50 | C55 | 60C6 | EN43 | 1055 | – |
| EN43B | 080A47 | CK45 | – | EN43B | 1045 | – |
| SAE1541 | 150M36 | 36Mn7 | 37C15 | EN15,15A | SAE1541 | SMn438 |
| EN8 | 080A40 | CK45 | 45C8 | EN8 | 1040,1045 | – |
| EN8A | 080A40 | CK45 | 45C8 | EN8A | 1040,1045 | – |
| EN8B | 080A40 | CK45 | 45C8 | 45C8 | 1040,1045 | – |
| EN8C | 080A40 | CK45 | 45C8 | EN8C | 1040,1045 | – |
| EN8D | 080A40 | CK45 | 45C8 | EN8D | 1040,1045 | – |