ASTM A36材質選用問題 - Yahoo!奇摩知識+

ASTM A36是一般結構用鋼材的規格 , 做一般螺絲時其 yield strength 僅 36000 psi，通常 A307 Grade C 螺栓原材料就是 A36. http://www.drillcogroup.com/maxi_bolts/general/material_specs_html http://www.portlandbolt.com/faqs/a36-and-a307-the-differences

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