
Chemical composition
| 
 C  | 
 Si  | 
 Mn  | 
 P  | 
 S  | 
 Cu  | 
 Ni  | 
 Cr  | 
| 
 0.75  | 
 -  | 
 -  | 
 -  | 
 -  | 
 -  | 
 1.30  | 
 0.20  | 
| 
 0.85  | 
 0.35  | 
 0.50  | 
 0.030  | 
 0.030  | 
 0.25  | 
 2.00  | 
 0.50  | 


| 
 C  | 
 Si  | 
 Mn  | 
 P  | 
 S  | 
 Cu  | 
 Ni  | 
 Cr  | 
| 
 0.75  | 
 -  | 
 -  | 
 -  | 
 -  | 
 -  | 
 1.30  | 
 0.20  | 
| 
 0.85  | 
 0.35  | 
 0.50  | 
 0.030  | 
 0.030  | 
 0.25  | 
 2.00  | 
 0.50  |