This Japanese Industrial Standard has been prepared by revising JIS Z3139 Method of macro test for section of spot welded joint published in 1978 to make it reflect to the actual situation in Japan and by adding the Vickers hardness testing method for the section.
JIS Z 3139:2009 規範的参照
JIS B 7725 ビッカース硬さ試験、試験機の検証と校正*, 2020-12-21 更新するには