China En19 Scm440 AISI 4140 Hot Rolled Qt Alloy Steel Round Bars, Find details about China Steel Bar, Steel Round Bar from En19 Scm440 AISI 4140 Hot Rolled Qt Alloy Steel Round Bars
Standard | Grade | C | Si | Mn | P | S | Cr | Mo |
ASTM A29 | 4140 | 0.38-0.43 | 0.15-0.35 | 0.75-1.00 | ≤ 0.035 | ≤ 0.04 | 0.8-1.1 | 0.15-0.25 |
42CrMo4 | 0.38-0.45 | ≤ 0.4 | 0.6-0.90 | ≤ 0.025 | ≤ 0.035 | 0.9-1.2 | 0.15-0.30 | |
EN10083 | 1.7225 | |||||||
JIS G4105 | SCM440 | 0.38-0.43 | 0.15-0.35 | 0.6-0.85 | ≤ 0.035 | ≤ 0.04 | 0.9-1.2 | 0.15-0.30 |
GB 3077 | 42CrMo | 0.38-0.45 | 0.17-0.37 | 0.5-0.80 | ≤ 0.035 | ≤ 0.035 | 0.9-1.2 | 0.15-0.25 |
BS 970 | EN19 | 0.35-0.45 | 0.15-0.35 | 0.5-0.80 | ≤ 0.035 | ≤ 0.035 | 0.9-1.5 | 0.2-0.40 |
Tensile str. (N/mm2) | Yield point (N/mm2) | Elongation (%) | Contraction (%) | Impack work (J/cm2) |
1080 | 930 | 12 | 45 | 63 |
A | B | C | D | |
MAX | MAX | MAX | MAX | |
Thin | 2 | 2 | 2 | 2 |
Thick | 1 | 1 | 1 | 1 |