Normalized 925°C (1700°F) in 32mm rounds, machined to 13.7 mm rounds, pseudocarburized at 925°C (1700°F) for 8 h., box cooled to RT, reheated to 800°C (1470°F), oil quenched, 150°C (300°F) temper, machined and tested in 12.8mm rounds. |
AFNOR 20 MC 5 (Fr), low carbon steels, UNS G51200, ASTM A322, ASTM A331, ASTM A519, SAE J404, SAE J770, DIN 1.7147(Germany) |