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洛氏硬度測量最小厚度表

 

最小 最小 - 洛氏 - - - 表面 洛氏 - -
厚度 厚度 C A B 15N 30N 45N 15T 30T 45T
in. mm.                  
                     
0.006 0.15       92          
0.008 0.20       90          
0.010 0.25       88     91    
0.012 0.30       83 82 77 86    
0.014 0.36       76 78.5 74 81 80  
0.016 0.41   86   68 74 72 75 72 71
0.018 0.46   84     66 68 68 64 62
0.020 0.51   82     57 63   55 53
0.022 0.56 69 79     47 58   45 43
0.024 0.61 67 76 94     51   34 31
0.026 0.66 65 71 87     37     18
0.028 0.71 62 67 80     20     4
0.030 0.76 57 60 71            
0.032 0.81 52   62            
0.034 0.86 45   52            
0.036 0.91 37   40            
0.038 0.96 28   28            
0.040 1.02 20                

 

The above tables are from ASTM E 18.
Reprinted from the Annual Book of ASTM Standards, copyright American Society for Testing and Materials.
100 Barr Harbor Drive, West Conshohocken, PA 19428-2959

 

 



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