
| 
 标准  | 
 牌号  | 
 抗拉强度(MPa)  | 
 屈服强度(MPa)  | 
 伸长率(%)  | 
| 
 GB 18248  | 
 37Mn  | 
 ≥750  | 
 ≥630  | 
 ≥16  | 
| 
 34Mn2V  | 
 ≥745  | 
 ≥530  | 
 ≥16  | |
| 
 30CrMo  | 
 ≥930  | 
 ≥785  | 
 ≥12  | |
| 
 35CrMo  | 
 ≥980  | 
 ≥835  | 
 ≥12  | 
| 
 标准  | 
 牌号  | 
 化学成分  | ||||||||
| 
 C  | 
 Si  | 
 Mn  | 
 P、S  | 
 Cu  | 
 Ni  | 
 Mo  | 
 Cr  | 
 V  | ||
| 
 GB18248  | 
 37Mn  | 
 0.34-0.40  | 
 0.10-0.30  | 
 1.35-1.65  | 
 ≤0.030  | 
 ≤0.20  | 
 ≤0.30  | 
 /  | 
 ≤0.30  | 
 /  | 
| 
 34Mn2V  | 
 0.30-0.37  | 
 0.17-0.37  | 
 1.40-1.75  | 
 ≤0.030  | 
 ≤0.20  | 
 ≤0.30  | 
 /  | 
 ≤0.30  | 
 0.07-0.12  | |
| 
 30CrMo  | 
 0.26-0.34  | 
 0.17-0.37  | 
 0.40-0.70  | 
 ≤0.030  | 
 ≤0.20  | 
 ≤0.30  | 
 0.15-0.25  | 
 0.80-1.10  | 
 /  | |
| 
 35CrMo  | 
 0.32-0.40  | 
 0.17-0.37  | 
 0.40-0.70  | 
 ≤0.030  | 
 ≤0.20  | 
 ≤0.30  | 
 0.15-0.25  | 
 0.80-1.10  | 
 /  | |
| 
 JIS G3429  | 
 STH11  | 
 ≤0.50  | 
 0.10-0.35  | 
 ≤1.80  | 
 ≤0.035  | 
 /  | 
 /  | 
 /  | 
 /  | 
 /  | 
| 
 STH12  | 
 0.30-0.41  | 
 0.10-0.35  | 
 1.35-1.70  | 
 ≤0.030  | 
 /  | 
 /  | 
 /  | 
 /  | 
 /  | |
| 
 STH21  | 
 0.25-0.35  | 
 0.15-0.35  | 
 0.40-0.90  | 
 ≤0.030  | 
 /  | 
 ≤0.25  | 
 0.15-0.30  | 
 0.80-1.20  | 
 /  | |
| 
 STH22  | 
 0.33-0.38  | 
 0.15-0.35  | 
 0.40-0.90  | 
 ≤0.030  | 
 /  | 
 ≤0.25  | 
 0.15-0.30  | 
 0.80-1.20  | 
 /  | |