He mea waro te whakaarahanga waro, ka mahia i te wera nui ka whakamahia mo te warohanga rino me te rino.
Ka whakamahia i te wa o te hanga maitai me te iti o te rino rino (whakaaetia te rino me te waro) hei whakahaere i te kaitahuri hāora me nga mahi hiko.I roto i te metallurgy waro raiser (milled graphite) e whakamahia nuitia ana mo te pahuka o te para, i te wa o te hanga kauwhata waro, hei whakakii mo te kirihou whakakaha graphite.