PTJ Shop nwere aha ọma maka ịkpụzi akụkụ dị mma site na 440 Stainless Steel. Anyị nwere ike igwe akụkụ dị mgbagwoju anya na igwe CNC Switzerland anyị yana CNC tụgharịa.

Ihe omimi nke martensitic igwe anaghị ata nchara site na mgbakwunye nke ihe ndị dị ka molybdenum, tungsten, vanadium, na niobium dabere na ngwakọta nke ihe dị iche iche nke 0.1% -1.0% C na 12% -27% Cr. Ebe ọ bụ na ngwongwo anụ ahụ bụ akụkụ nke nwere akụkụ ahụ, ike na-adaba na oke okpomọkụ. N'okpuru 600 Celsius C, ike dị elu dị elu dị elu n'etiti ụdị igwe anaghị agba nchara, na ike creep bụkwa nke kachasị elu. 440A nwere ezigbo imenyụ na imesi obi ike yana nnukwu isi ike. O nwere ikike kariri 440B nchara na ígwè 440C. A na-eji 440B eme ihe iji belata ngwaọrụ, ihe eji atụ ihe, bea na valvụ. Ọ nwere ike dị elu karịa nchara 440A na ike dị elu karịa nchara 440C. 440C nwere ike kachasị elu nke igwe anaghị agba nchara na nchara na-eguzogide okpomọkụ ma jiri ya mee ihe na ntanye. 440F bụ ọkwa nchara nke na-eme ka ihe dị mfe nke 440C nchara maka akpaka lathes.

440 nwere machining na-eri ihe nke 6.3 ma e jiri ya tụnyere ígwè 12L14. Ọ dịghị mma maka ịgbado ọkụ ma ọ bụ ịmepụta. Enwere ike iburu 440, kpoo ọkụ ma kpochaa ya.

 kpọtụrụ anyị NJ 440 machining ọrụ ndị ọrụ igwe taa iji kpaa nkata gbasara akụkụ gị ndị dị mgbagwoju anya.