Annealing  | 
                       Quenching  | 
                       Tempering  | 
                       Normalizing  | 
                       Q & T  | 
                     
√  | 
                       √  | 
                       √  | 
                       √  | 
                       √  | 
                     
| C | 
				Si  ≤  | 
			
				Mn  ≤  | 
			
				 P ≤  | 
			
				 S ≤  | 
			Cr | Ni | Mo | Other | 
|---|---|---|---|---|---|---|---|---|
| 0.35-0.45 | 1.00 | 2.00 | 0.030 | 0.030 | 12.5-13.5 | 12.5-13.5 | 1.80-2.20 | 
				 Co 9.50-10.50   W 2.3-2.8 Nb / Ta 2.80-3.20  | 
		
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