Annealing  | 
                       Quenching  | 
                       Tempering  | 
                       Normalizing  | 
                       Q & T  | 
                     
√  | 
                       √  | 
                       √  | 
                       √  | 
                       √  | 
                     
| C | 
				Si  ≤  | 
			
				Mn  ≤  | 
			
				 P ≤  | 
			
				 S ≤  | 
			Cr | Ni | Mo | Other | 
|---|---|---|---|---|---|---|---|---|
| ≤0.030 | 1.00 | 0.50 | 0.040 | 0.15-0.35 | 17.5-19.0 | ---------- | 2.00-2.50 | Ti 0.30-0.80(C+N)≤0.040 | 
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