12L14 Ogwe igwe na-egbutu n'efu

A ígwè nwere ọdịnaya dị elu karịa ka ọ dị na mbụ nke sọlfọ na phosphorus ezubere maka imepụta akụkụ maka ngwa ngwa ngwa ngwa ngwa ngwa ngwa ngwa na nke semiautomatic. A na-emepụta ígwè nchara n'efu n'ụdị mkpanaka, ọ nwere 0.08-0.45 pasent carbon, 0.15-0.35 pasent silicon, 0.6-1.55 pasent manganese, 0.08-0.30% sọlfọ na 0.05-0.16% nke phosphorus. Ọdịnaya sọlfọ dị elu na-eduga na nguzobe nke inclusions (dịka ọmụmaatụ, manganese sulfide) tụfuru n'akụkụ ọka. Nsonye ndị a na-eme ka ịkpụcha ihe ma na-akwalite ichicha na nhazi mgbawa dị mfe. Maka ebumnuche ndị a, a na-eji lead na tellurium na-eji ígwè na-akpụ akpụ eme ihe mgbe ụfọdụ.

12L14 bụ ụdị resulfurized na rephosphorized carbon ígwè maka free-ịcha na machining ngwa. The structural ígwè (akpaaka Steel) nwere magburu onwe machinability na ala ike n'ihi alloying ọcha dị ka Sulfur na Lead, nke nwere ike ibelata igbubi iguzogide ma melite imecha na nkenke nke machined akụkụ. 12L14 ígwè e ọtụtụ-eji na mmepụta nke ziri ezi ngwá akụkụ, ụgbọala akụkụ na akụkụ dị mkpa nke dị iche iche nke ígwè ọrụ, ahụkarị ngwa gụnyere bushings, aro, inserts, couplings, oyiyi akwa na wdg.