3. astm a490 mechanical properties and head marking
TRANSCRIPT
Bolt SizeTension Stength
Yield Strength
Enlogation
in. ksi ksi % Brinell Rockwell C
1/2~1"<2*D, HB 311-352; >2*D, HB…-352;
<2*D, 33-39;>2*D, HB…-39;
1~1-1/2"<3*D,HB313-352;
>3*D,HB…-352<2*D, 33-39;
>2*D, HB…-39;
Type1ASTM A490
150-173 130min 14
ASTM A490 Mechanical properties and Head marking
Grade
Hardness
Head MarkingStandard for Bolt
sales15
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