Hoʻohana maʻamau ʻia nā kaola kalapona ʻōwili wela e like me 20Mn, 40Mn, a me 50Mn i nā noi ʻoihana like ʻole ma muli o ko lākou mau waiwai mechanical a me ka versatility. Hōʻike maʻamau kēia mau inoa i ka ʻona kalapona a me nā waiwai kikoʻī ʻē aʻe o ke kila, a pili pinepine lākou me nā māka kila Kina.
Ua ʻike ʻia kēia mau pahu kila kalapona wela no ko lākou ikaika kiʻekiʻe, ka machinability maikaʻi, a me ka weldability, e kūpono ana iā lākou no nā noi e like me nā shafts, axles, gears, a me nā mea mīkini ʻē aʻe. Hoʻohana pinepine ʻia lākou i ke kūkulu ʻana i nā ʻāpana kaʻa, nā mea mahiʻai, a me nā ʻāpana ʻenekinia maʻamau.