Ngā koranu aukume ngohengohe1J50 / FeNi 50/ Ni 50:
E whakamahia ana i ngā wāhanga e rua mō te hurihanga pūngao me te tukatuka mōhiohio
I roto i te umanga hiko, ko te nuinga o te wā he nui te aukume, he iti te ngaronga matua o te koranu. I roto i te umanga hiko, ko te nuinga o te wā he iti, he waenga rānei te koranu, he nui te uruhanga aukume, he iti hoki te kaha akiaki. I ngā auau teitei, me hanga he rīpene angiangi, he koranu rānei, he teitei ake te ātete. I te nuinga o te wā he pepa, he rīpene rānei.
Hei utu mō te whakamahinga, nā te mea ka puta ngā aukume aukume tauutuutu ki roto i te rauemi, ka hua ake te ngaronga, ka iti ake te ātete o te koranu, ka nui ake te matotoru, ka teitei ake te auau o te papa aukume tauutuutu, ka nui ake ngā ngaronga o te aukume tauutuutu, ka nui ake te whakaiti i te aukume. Hei whakatutuki i tēnei, me hanga te rauemi kia angiangi ake te pepa (rīpene), ā, me pania te mata ki te paparanga ārai, me whakamahi rānei i ētahi tikanga hei hanga i te mata hei paparanga ārai waikura, ko aua koranu he mea noa te whakamahi i te paninga hiko konupora waikura.
Ko te koranu rino-nikora te nuinga o te wā e whakamahia ana i roto i te papa aukume tauutuutu, te nuinga mō te rino ioka, te whakawhiti, ngā whakawhiti hiko iti me te parenga aukume.
Ko ngā taipitopito e whai ake nei mō ā mātou hua1J50:
| Tau | C | P | S | Cu | Mn | Si | Ni | Cr | Fe |
| 1J50 | 0.03 | 0.020 | 0.020 | 0.20 | 0.30~0.60 | 0.15~0.30 | 49.0~51.0 | — | Para |



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