Hana ?ia ?o H13 wela hana make kila a i ?ole 38CrMoAl a me nā mea ?ē a?e ?O ka mālama wela he nitriding a i ?ole ka nitriding He ki?eki?e ka pa?akikī (HRC56-HRC59), ke kūpa?a maika?i a me ka ho?opa?a pa?a pa?a ka po?e me nā makahiki he nui o ka ?ike hana Ho?olālā ?ia a hana ?ia e ka po?e loea i ka ho?ohana ?ana i kahi kikowaena machining no ka ho?oponopono ?ana i ka hana a me ka wili ?ana, ?oi aku ka pololei o ka ho?ohana ?ana i ka paia ?o HRC1.6.