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ASTM A320/A320M 2010a Table1 Mechanical Requirements

Views:22     Author:Site Editor     Publish Time: 2017-04-24      Origin:Site

Mechanical Requirements
Class and                Grade Diameter,inHeat         Treatment  Minimum          Tempering    Temperature   °FTensile       Strength,                min,ksi     Yield                 Strength,min,ksi       (0.2% offset)    Elongation   in 2 in.      Min,% Reduction   of Area,     min,% Hardness max
Ferritic Steels
L7,L7A,L7B    L7C,L70,         L71,L72,L732-1/2 and underquenched   and            tempered    11001251051650321 HBW or 35 HRC
L434 and underquenched   and            tempered    11001251051650321 HBW or 35 HRC
L7M2-1/2 and underquenched   and            tempered    1150100801850235 HBW or 99 HRB
L11 and underquenched   and            tempered    
1251051650
Austenitic Steels
Class 1:B8,        B8C,B8M,     B8P,B8F,     B8T,B8LN,      B8MLNall diameterscarbide          solution       treated
75303050223 HBW or 96 HRB        
Class 1A:        B8A,B8CA,    B8MA,B8PA,     B8FA,B8TA,   B8LNA,        B8MLNAall diameterscarbide          solution       treated in    the finished     condition
75303050192 HBW or 90 HRB
Class 2:D8,        B8C,B8P,        B8F,B8T3/4 and under                    over 3/4 to 1,incl          over 1 to 1-1/4,incl        over 1-1/4 to 1-1/2,inclcarbide          solution       treated in    strain       hardened  
125                  115                   105                   100100            80                     65                    5012               15                20               2835               30                35                     45321 HBW or 35 HRC  321 HBW or 35 HRC 321 HBW or 35 HRC 321 HBW or 35 HRC
Class 2:B8M3/4 and under                    over 3/4 to 1,incl          over 1 to 1-1/4,incl        over 1-1/4 to 1-1/2,inclcarbide          solution       treated in    strain       hardened  
110                       100                        95                          9095                   80                   65                     50 15                20                25                3045                   45                45               45         321 HBW or 35 HRC  321 HBW or 35 HRC 321 HBW or 35 HRC 321 HBW or 35 HRC


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