Annealing  | 
                       Quenching  | 
                       Tempering  | 
                       Normalizing  | 
                       Q & T  | 
                     
√  | 
                       √  | 
                       √  | 
                       √  | 
                       √  | 
                     
| Element | Weight % | 
| C | 0.55-0.65 | 
| Mn | 0.65-1.10 | 
| P | 0.035 | 
| S | 0.040 | 
| Si | 1.7-2.20 | 
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