L7M material min hardness
L7M material min hardness
(OP)
Hi, could anyone tell me the min hardness for an ASTM A320 L7M bolt i can see the max is 235HB but have been told the min is 200HB is that correct.
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L7M material min hardness
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RE: L7M material min hardness
Use the minimum required strength levels as provided in the material speicfication for service application.
RE: L7M material min hardness
RE: L7M material min hardness
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Plymouth Tube
RE: L7M material min hardness
RE: L7M material min hardness
(B)To meet the tensile requirements, the Brinell hardness shall not be less than 200 HB or 93 HRB.
Do you have the material test report(s) for the batch or lot of bolts? If so, review the tensile results for compliance with the minimum strength requirement.
I also would question the hardness test results in terms of how it was performed, was a qualified procedure used?
RE: L7M material min hardness
RE: L7M material min hardness