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Quick Details

  • Steel Grade: S45C/SAE 1045/EN8/C45/CK45
  • Standard: AISI, ASTM, BS, DIN, GB, JIS
  • Dimensions: 80-1200mm
  • Place of Origin: Jiangsu, China (Mainland)
  • Brand Name: Unite steel
  • Model Number: S45C/SAE 1045/EN8/C45/CK45
  • Technique: Forged
  • Application: Structural Steel Bar
  • Alloy Or Not: Non-alloy
  • Special Use: Mold Steel
  • Type: Carbon Steel Bar
  • Process: AF+LF+VD+FORGED+Heat Treatment(optional)
  • Ultrasonic test: according to SEP 1921-84
  • Delivery condition: Hot Forged +Rough Machined (black Surface
  • Surface treatment: Machined Bright
  • Shape: Round Section
  • Certificate: ISO9001:2008

Packaging & Delivery

Packaging Details Seaworthy Package
Delivery Time Within 10-45 days after both confirmed

CK45/1045/C45E carbon steel price per kg 



Plain carbon steel for mechanical engineering and automotive components.

It is usually supplied untreated but can be supplied to order in the normalized or finally heat treated (quenched and tempered to "Q" or "R" properties), which is adequate for a wide range of applications.

It is a very popular grade of through-hardening medium carbon steel, which is readily machinable in any condition. It is suitable for the manufacture of parts such as general-purpose axles and shafts, gears, bolts and studs. It can be further surface-hardened typically to 50-55 HRC by induction processes, producing components with enhanced wear resistance.

In its heat treated forms possesses good homogenous metallurgical structures, giving consistent machining properties.



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  No.: 1.0511, 1.1186, 1.1189.

USA:         ASTM A29 , ASTM A510 , 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.

Japan:        JIS S 45C , JIS S 48 C


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)


Hot forming and heat treatment:

hot rolling:1100 - 850°C

Normalising:840 - 880°C/air

Soft annealing:680 - 710°C/furnace

Hardening:820 - 860°C/water, oil

Tempering:550 - 660°C

Treated for cold shearability +S:max. 255 HB

Soft annealed +A:max. 207 HB




Hot Forged:  80mm-1200mm

Length:2000-13000mm or as required




Black, Peeled K12, Turned & Polished H10, H11


Forged ratio: no less than 3:1




Test: Ultrasonic test according to SEP 1921-84

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