ʻO ST12 ka mea maʻamau i ʻōwili ʻia ke kila maʻamau, ST12 no ka German standard (DIN1623), e like me EN10130 DC01, JS SPCC, ka American standard ASTM A1008 CS.ST12 he kila maʻamau i ʻōwili ʻia, ST13 stamping grade cold rolled steel, ST14 hohonu. ke kaha kiʻi kila ʻōwili ʻia, hōʻike ʻia ʻo ST12 ma ke ʻano he helu kila maʻamau, a ʻo ka q195, spcc, DC01 ka mea maʻamau ka mea like.