Shanghai Unite Steel Trading Co., Ltd.

Model Number: hot forged steel bar -59 Brand Name: Unite Steel Key Specifications/Special Features: Carbon steel bar SF55Applications:Plain carbon steel for mechanical engineering and automotive componentsUsually supplied untreated but can be supplied to order in normalized or finally heat treated (quenched and tempered to "Q" or "R" properties), which is adequate for a wide range of applicationsVery popular grade of through-hardening medium carbon steel, which is readily machinable in any conditionSuitable for the manufacture of parts such as general-purpose axles and shafts, gears, bolts and studsCan be further surface-hardened typically to 50-55 HRC by induction processes, producing components with enhanced wear resistanceIn its heat treated forms possesses good homogenous metallurgical structures, giving consistent machining properties
Related specifications:
European: C40, C45, Ck40, Ck45, Cm40, Cm45
Germany: DIN 1.1191 DIN1.1201
Great Britain: BS970: 1955 EN8,
BS970/PD970: 1970 onwards 080M40, 080M46, 060A47
France: AFNOR XC 42 TS, AFNOR XC 45 , AFNOR XC 48, AFNOR XC42
Sweden: SS 1672
Werkstoff number: 1.0511, 1.1186, 1.1189
USA: ASTM A29, ASTM A510 and ASTM A519,ASTM A576 , ASTM A682,FED QQ-S-635 (C1045) , FED QQ-S-700 (1045),SAE J403 , SAE J412 , SAE J414 , UNS G10450
SAE: 1045, 1049, 1039, 1040, 1042, 1043, 1045
Chemical composition(%):
Carbon: 0.43-0.50
Silicon: 0.17-0.37
Manganese: 0.60-0.90
Phosphorus: 0.04 max
Sulphur: 0.04 max
Chrome: 0.30 min
Process: EAF + LF + VD + hot forged + heat treatment (optional)
Surface finishes:
Black, turned and grinded
4. Forged ratio: no less than 3:1
Colour code:red
Test: ultrasonic test according to SEP 1921-84