Official Answer
Answer
Bayan nadawa, SAE 1070 carbon karfe karkace zobba 'mai-quenched da fushi' ko 'austempered' don cimma taurin yawanci tsakanin 45-52 HRC. Tsarin zafin jiki (dumi zuwa $ 700-900 ^{\circ}F $) yana da mahimmanci don canza gaɓar martensite zuwa martensite mai zafi, wanda ke ba da mahimmancin ƙarfi da ductility. Ba tare da zafin da ya dace ba, zoben za su karye yayin shigarwa lokacin da aka faɗaɗa kan sanda. Dole ne a sarrafa taurin ƙarshe tam: tsayi da yawa yana haifar da raguwa, yayin da ƙarancin ƙarfi yana haifar da 'saiti' da asarar ƙarfin riƙewa.
