... .Technique:Rolled 3.Surface: Black or annealed or normalizing(optional 1045/ C45E (Ck45) - C45R (Cm45) APPLICATIONS:Plain carbon steel for mechanical ... A682 , FED QQ-S-635 (C1045) , FED QQ-S-700 (1045) , SAE J403 , SAE J412 , SAE J414 , UNS G10450SAE ... : 1045, 1049, 1039, 1040, 1042, 1043, 1045.Japan: JIS S 45C , JIS S 48 C ...