This standard applies to aluminum-chromium-molybdenum steel products made by hot processing such as hot rolling and hot forging, and which are usually further processed and heat treated, such as forging and cutting, and used mainly for machine structures. (hereinafter referred to as steel materials).
JIS G 4202:2005 history
2016JIS G 4053:2016 Low-alloyed steels for machine structural use
2008JIS G 4053:2008 Low-alloyed steels for machine structural use