Annealing  | 
                       Quenching  | 
                       Tempering  | 
                       Normalizing  | 
                       Q & T  | 
                     
√  | 
                       √  | 
                       √  | 
                       √  | 
                       √  | 
                     
| C | 
				Si  ≤  | 
			
				Mn  ≤  | 
			
				 P ≤  | 
			
				 S ≤  | 
			Cr | Ni | Mo | Other | 
|---|---|---|---|---|---|---|---|---|
| 0.16-0.23 | 0.20-0.40 | 0.20-0.40 | 0.025 | 0.025 | 2.30-2.60 | 0.30-0.40 | 
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Related steel grade search:21MnCr10