1.45--- Ọdịdị dị elu nke carbon steel, Ọkara Carbon Quenched, na igwe na-ekpo ọkụ: N'ime sistemu ikuku na-ebufe ihe a na-ejikarị eme ihe na-eme ka carbon na-emenyụ ọkụ na igwe na-ekpo ọkụ, nwere ezigbo ihe eji arụ ọrụ zuru oke, ike siri ike, yana dị mfe. .
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