... annealing:680 - 710°C/furnaceHardening:820 - 860°C/water, oilTempering:550 - 660°CTreated for cold shearability +S:max. 255 HBSoft annealed +A:max ... 3:1 Test: Ultrasonic test according to SEP 1921-84 C/c Certificate of Quality: issued in English, in addition the normal ... G10450SAE: 1045, 1049, 1039, 1040, 1042, 1043, 1045.Japan: JIS S 45C , JIS S 48 C