hat
ASTM D2 asye alyaj yo ta dwe prechofe trè dousman 815oC (1500oF) ak ka Lè sa a tanperati ap ogmante a 1010oC (1850oF). Yo Lè sa a, ki te fèt nan 1010oC (1850oF) pou 20 a 45 minit ak lè frèt (eten lè).
eng
ASTM D2 steels alloy should be preheated very slowly to 815oC (1500oF) and then temperature can be increased to 1010oC (1850oF). They are then held at 1010oC (1850oF) for 20 to 45 minutes and air cooled (air quenched).