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| Steel Grade (Code Number) | C | Mn | Si | S Max | P Max |
| Ck 45 | 0.42/0.50 | 0.50/0.80 | 0.15/0.35 | 0.035 | 0.035 |
| Ck 55 | 0.52/0.60 | 0.60/0.90 | 0.15/0.35 | 0.035 | 0.035 |
| Ck 60 | 0.57/0.65 | 0.60/0.90 | 0.15/0.35 | 0.035 | 0.035 |
| SAE1020 | 0.18/0.23 | 0.30/0.60 | 0.10/0.30 | 0.050 | 0.040 |
| SAE1030 | 0.28/0.34 | 0.60/0.90 | 0.10/0.30 | 0.050 | 0.040 |
| SAE1035 | 0.32/0.38 | 0.60/0.90 | 0.10/0.30 | 0.050 | 0.040 |
| SAE1040 | 0.37/0.44 | 0.60/0.90 | 0.10/0.30 | 0.050 | 0.040 |
| SAE1045 | 0.40/0.50 | 0.60/0.90 | 0.10/0.30 | 0.050 | 0.040 |
| En-8D | 0.40/0.45 | 0.70/0.90 | 0.05/0.35 | 0.060 | 0.060 |
| En-9 | 0.50/0.60 | 0.50/0.80 | 0.05/0.35 | 0.060 | 0.060 |
| Steel Grade (Code Number) | C | Mn | Si | S Max | P Max |
| Ck 45 | 0.42/0.50 | 0.50/0.80 | 0.15/0.35 | 0.035 | 0.035 |
| Ck 55 | 0.52/0.60 | 0.60/0.90 | 0.15/0.35 | 0.035 | 0.035 |
| Ck 60 | 0.57/0.65 | 0.60/0.90 | 0.15/0.35 | 0.035 | 0.035 |
| SAE1020 | 0.18/0.23 | 0.30/0.60 | 0.10/0.30 | 0.050 | 0.040 |
| SAE1030 | 0.28/0.34 | 0.60/0.90 | 0.10/0.30 | 0.050 | 0.040 |
| SAE1035 | 0.32/0.38 | 0.60/0.90 | 0.10/0.30 | 0.050 | 0.040 |
| SAE1040 | 0.37/0.44 | 0.60/0.90 | 0.10/0.30 | 0.050 | 0.040 |
| SAE1045 | 0.40/0.50 | 0.60/0.90 | 0.10/0.30 | 0.050 | 0.040 |
| En-8D | 0.40/0.45 | 0.70/0.90 | 0.05/0.35 | 0.060 | 0.060 |
| En-9 | 0.50/0.60 | 0.50/0.80 | 0.05/0.35 | 0.060 | 0.060 |