1) Ko ngā āhuatanga o te maitai taputapu 42CrMo ko te kaha nui, te kaha whakapakeke, te pakari pai, te iti o te whakarerekētanga i te wā tinei, te kaha ngoki nui me te kaha pumau i te pāmahana tiketike.

Whakamahia hei hanga i ngā mea hanga e hiahia ana kia kaha ake, kia nui ake hoki ngā wāhanga kua tineihia, kua whakamahanahia hoki i te maitai 35CrMo, pērā i: ngā taputapu nunui mō te kukume waka tereina, ngā taputapu tuku utaina nui, ngā taputapu oko pēhanga, ngā toki o muri, ngā tokotoko hono me ngā puna tino utaina. Ka taea hoki te whakamahi mō ngā hononga paipa keri poka hinu hohonu me ngā taputapu hī ika i raro i te 2000m; ā, ka taea te whakamahi mō ngā pokepokea o ngā mīhini piko, me ētahi atu.

2) Ko te maitai taputapu 20CrMnTiH he maitai whakapūkara me te mahi pai, he kaha ki te whakapakeke, he mata pakari me te ātete ki te kakahu me te matua pakari i muri i te whakapūkara me te tinei, he pakari teitei i te pānga pāmahana iti, he kaha ki te whakarewa waenga, ā, ka taea te whakarewa i muri i te whakatikatika. He pai te miihini.

E whakamahia ana hei hanga i ngā wāhanga nui me te wāhanga whakawhiti <30mm e tu atu ana i ngā kawenga tere-nui, waenga, taumaha rānei, te pānga me te waku; pērā i: ngā taputapu, ngā taputapu mowhiti, ngā pane whakawhiti o te rakau taputapu, me ētahi atu. He maitai whakakapi mō te 18CrMnTi, e whakamahia whānuitia ana hei wāhanga waro. E whakamahia ana i roto i ngā ahumahi motuka me te tarakihana me te wāhanga i raro i te 30mm; he wāhanga waro nui e mau ana i ngā kawenga tere-nui, waenga, taumaha rānei, ā, ka pāngia e te pānga me te waku;