Lub nplhaib yog quenching + tempering. Tusforged-ntiv nplhaibYog rhuab rau qhov ntsuas kub uas tsim nyog (quenching kub 850 ℃, tempering kub 590 ℃) thiab muab raus rau hauv nruab nrab kom txias txias.

50 C8 nplhaib -Forging Quenching.