3. astm a490 mechanical properties and head marking
Post on 12-Aug-2015
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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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