Annealing  | 
                       Quenching  | 
                       Tempering  | 
                       Normalizing  | 
                       Q & T  | 
                     
√  | 
                       √  | 
                       √  | 
                       √  | 
                       √  | 
                     
| C | 
				Si  ≤  | 
			
				Mn  ≤  | 
			
				 P ≤  | 
			
				 S ≤  | 
			Cr | Ni | Mo | Other | 
|---|---|---|---|---|---|---|---|---|
| ≤0.030 | 1.00 | 4.00-6.00 | 0.025 | 0.010 | 20.0-21.5 | 15.0-17.0 | 3.00-3.50 | 
				 Nb ≤ 0.25 N 0.20-0.35  | 
		
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Related steel grade search:X2CrNiMnMoNNb 21-16-5-3