Chemical Composition of Steel Grade
| GRADE | C | Mn | Si | S | P | Cr | Ni | Mo | V |
| EN-8 | 0.35 – 0.45 | 0.60 – 1.00 | 0.10 – 0.35 | 0.050 MAX | 0.050 MAX | – | – | ||
| EN-8D | 0.40 – 0.45 | 0.70 – 0.90 | 0.05 – 0.35 | 0.060 MAX | 0.060 MAX | – | – | ||
| EN-9 | 0.50 – 0.60 | 0.50 – 0.80 | 0.05 – 0.35 | 0.040 MAX | 0.040 MAX | – | – | ||
| EN-19 | 0.35 – 0.45 | 0.50 – 0.80 | 0.10 – 0.35 | 0.04 | 0.04 | 0.9-1.4 | – | 0.2-0.4 | |
| SAE – 4140 | 0.38 – 0.43 | 0.75 – 1.00 | 0.20 – 0.35 | 0.035 | 0.035 | 0.8-1.1 | – | 0.15-0.25 | |
| 42CRMO4 | 0.35 – 0.45 | 0.50 – 0.80 | 0.15 – 0.40 | 0.035 | 0.035 | 0.9-1.2 | – | 0.15-0.3 | |
| SCM – 435 | 0.33 – 0.38 | 0.60 – 0.85 | 0.15 – 0.35 | 0.030 MAX | 0.030 MAX | 0.9-1.2 | – | 0.15-0.3 | |
| EN-15 | 0.30 – 0.40 | 1.30 – 1.70 | 0.10 – 0.35 | 0.040 MAX | 0.040 MAX | – | – | ||
| SAE 1541 | 0.36 – 0.44 | 1.35 – 1.65 | – | 0.050 MAX | 0.040 MAX | – | – | ||
| EN-16 | 0.30 – 0.40 | 1.30 – 1.80 | 0.10 – 0.35 | 0.04 | 0.04 | – | – | 0.2-0.3 | |
| EN-18 | 0.35 – 0.45 | 0.60 – 0.95 | 0.10 – 0.35 | 0.04 | 0.04 | 0.85-1.15 | – | ||
| 41CR4 | 0.38 – 0.45 | 0.50 – 0.80 | 0.15 – 0.40 | 0.035 MAX | 0.035 MAX | 0.9-1.2 | – | ||
| EN-25 | 0.27 – 0.35 | 0.50 – 0.70 | 0.10 – 0.35 | 0.04 | 0.04 | 0.50 – 0.8 | 2.3-2.8 | 0.4-0.7 | |
| EN-31 | 0.90 – 1.20 | 0.30 – 0.75 | 0.10 – 0.35 | 0.04 | 0.04 | 1-1.6 | – | ||
| SAE 52100 | 0.98 – 1.10 | 0.25 – 0.45 | 0.15 – 0.30 | 0.025 MAX | 0.025 MAX | 1.3-1.6 | |||
| EN-36B | 0.12 – 0.18 | 0.30 – 0.60 | 0.10 – 0.35 | 0.04 | 0.04 | 0.6-1.1 | 3-3.75 | ||
| EN-36C | 0.12 – 0.18 | 0.30 – 0.60 | 0.1-0.35 | 0.04 | 0.04 | 0.6-1.1 | 3-3.75 | 0.1-0.25 | |
| EN-41B | 0.35 – 0.45 | 0.60 MAX | 0.1-0.45 | 0.04 | 0.04 | 1.5-1.8 | 0.40 MAX | 0.1-0.25 | |
| EN-47 | 0.45 – 0.55 | 0.50 – 0.80 | 0.50 MAX | 0.04 | 0.04 | 0.8-1.2 | |||
| EN-353 | 0.20 MAX | 0.50 – 1.00 | 0.35 MAX | 0.04 | 0.04 | 0.75-1.25 | 1-1.5 | 0.08-0.15 | |
| EN-354 | 0.20 MAX | 0.50 – 1.00 | 0.35 MAX | 0.04 | 0.04 | 0.75-1.25 | 1.50 – 2.0 | 0.1-0.2 | |
| 16MNCR5 | 0.14 – 0.19 | 1.00 – 1.30 | 0.15 – 0.40 | 0.035 MAX | 0.035 MAX | 0.8-1.1 | |||
| 20MNCR5 | 0.17 – 0.22 | 1.10 – 1.40 | 0.10 – 0.35 | 0.035 | 0.035 | 1-1.3 | |||
| SAE – 4150 | 0.48 – 0.53 | 0.75 – 1.00 | 0.20 – 0.35 | 0.04 | 0.04 | 0.8-1.1 | 0.15-0.25 | ||
| SAE – 4320 | 0.17 – 0.22 | 0.45 – 0.65 | 0.15 – 0.35 | 0.035 MAX | 0.040 MAX | 0.4-0.6 | 1.65-2 | 0.20 – 0.30 | |
| EN-24 | 0.35 – 0.45 | 0.45 – 0.70 | 0.10 – 0.35 | 0.04 | 0.04 | 0.9-1.4 | 1.3-1.8 | 0.20 – 0.40 | |
| SAE – 4340 | 0.38 – 0.43 | 0.60 – 0.80 | 0.15 – 0.35 | 0.035 MAX | 0.040 MAX | 0.7-0.9 | 1.65-2 | 0.20 – 0.30 | |
| SAE – 8620 | 0.18 – 0.23 | 0.70 – 0.90 | 0.20 – 0.35 | 0.04 | 0.04 | 0.4-0.6 | 0.4-0.7 | 0.15-0.25 | |
| F – 22 | 0.15 MAX | 0.30 – 0.60 | 0.40 MAX | 0.04 | 0.04 | 2-2.5 | 0.87-1.3 | ||
| 17CRNIMO6 | 0.14 – 0.19 | 0.40 – 0.60 | 0.15 – 0.40 | 0.035 MAX | 0.035 MAX | 1.5-1.8 | 1.4-1.7 | 0.25-0.35 | |
| A – 105 | 0.35 MAX | 0.60 – 1.05 | 0.35 MAX | 0.050 MAX | 0.040 MAX | – | |||
| CK – 45 | 0.42 – 0.50 | 0.50 – 0.80 | 0.15 – 0.35 | 0.035 MAX | 0.035 MAX | – | |||
| SCM – 420 | 0.18 – 0.23 | 0.60 – 0.85 | 0.15 – 0.35 | 0.030 MAX | 0.030 MAX | 0.9-1.2 | 0.15-0.3 | ||
| 45C8 | 0.40 – 0.50 | 0.60 – 0.90 | 0.10 – 0.35 | – | – | – | – | ||
| 4130 | 0.28 – 0.33 | 0.40 – 0.60 | 0.15 – 0.30 | 0.035 MAX | 0.040 MAX | 0.80 – 1.1 | 0.15-0.25 | – | |
| B – 16 | 0.36 – 0.47 | 0.45 – 0.70 | 0.15 – 0.35 | 0.040 MAX | 0.035 MAX | 0.8-1.15 | 0.5-0.65 | 0.25-0.35 |
