A109 COLD ROLLED STRIP STEEL Physical & Chemical Properties

Cold Rolled Strip Steel Physical Properties
ASTM A109
Temper Bend Test Requirement
No. 1 Hard  Not required to make bends in any direction
No. 2 Half-Hard  Bend 90 degrees transverse around a radius equal to that of the thickness.
 No. 3 Quarter-Hard  Bend 180 degrees transverse over one thickness of the strip and 90 degrees longitudinal around a radius equal to the thickness.
 No. 4 Commerical Quality  Bend flat upon itself in any direction.
No. 5 Dead-Soft  Bend flat upon itself in any direction.


Cold Rolled Strip Steel Physical Properties
 Temper  Thickness Rockwell Hardness 
   Range Minimum  Maximum (approx) 
 No. 1 - Hard     0.025  15T90  ****
   0.040 - 0.025  30T76  ****
   0.070 - 0.040  B90.0  ****
   0.300 - 0.07  B84.0  ****
 No. 2 Half-Hard    0.025  15T83.5  15T88.5
   0.040 - 0.025  30T63.5  30T73.5
   0.300 - 0.040  B70.0  B85
 No. 3 Quarter-Hard    0.025  15T80  15T85
   0.040 - 0.025  30T56.5  30T67
   0.300 - 0.040  B60  B75
 No. 5 Skin-Rolled    0.025  ***  15T78.5
   0.040 - 0.025  ***  30T53
   0.300 - 0.040  ***  B55
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