C45 | DIN 1.0503 | CK45 CARBON STEEL
C45 / DIN 1.0503 Forged steel manufacturers and suppliers,supplied in round rods,square/flat bars,rollers,shafts,blocks and forging pieces.
C45 / DIN 1.0503 Carbon Steel is a general carbon engineering steel which is characterized by good weldability, good machinability, and high strength and impact properties after quenched and tempered. As per EN 10083 standard,it is widely used for vechiles, shafts, bushings, crankshafts, connecting rods and parts for the machine building industry and steel for axes, knives, hammers, etc.
C45 Steel Chemical Composition
| Grade | C | Si | Mn | P | S | Cr |
| C45/DIN 1.0503 | 0.42-0.5 | ≤ 0.4 | 0.5-0.8 | ≤0.035 | ≤ 0.035 | ≤ 0.4 |
| CK45 | 0.42-0.5 | ≤0.35 | 0.50-0.80 | ≤0.035 | ≤ 0.035 | - |
C45 Steel Equivalent Grade
| AISI/SAE | BS | JIS | DIN | GB |
| 1045 | 080M40/EN8 | S45C | CK45 | 45# |
C45 Steel Heat Treatment & Mechanical Property
C45 Steel Normalizinging
1.Normalize temperature:840-900℃
2.Three steps for temperature raising
3.Proper holding time depends on the dimension.
4Air cooling.
5.Hardness: below 240HB.
C45 Normalizing Diagram
C45 Steeel Mechanical Property With Normalized Condition
| Tensile Strength | Yield Strength | Elongation | Reduction of Area | Impact Charpy-V | Hardness |
| 670-720Mpa | ≥340Mpa | 15-18% | 45-50% | ≥50J | 170-240HB |
C45 Steel Annealing
1.Annealing temperature:820-840℃
2.Enough soaking time for the steel heating
3.Cooling in the furnace.
4.Max hardness:200HBW
C45 Annealing Diagram
C45 Steeel Mechanical Property With Annealed Condition
| Tensile Strength | Yield Strength | Elongation | Reduction of Area | Impact Charpy-V | Hardness |
| ≥532Mpa | ≥280Mpa | ≥32% | ≥49% | ≥60J | 160-200HBW |
C45 Steel Quenching
2.Three steps for steel heating,and suitable holding time.
3.Water or oil Quench
4.Tempering immediately after quenched.
C45 Quenching Diagram
C45 Steel Mechanical Property with Quenched and Tempered Condition
| Tempering Temperature | Tensile | Yield | Elongation | Reduction of area | Impact Charpy-V | Hardness |
| 180-220℃ | ≥1300Mpa | ≥1150Mpa | ≥6% | ≥22% | 15-25J | ≤50HRC |
| 560-620℃ | 700-850Mpa | 450-560Mpa | 15-17% | 45-50% | 60-80J | 196-241HB |
C45 Steel Quality Certification
A material test report(Inspection Certificate EN 10204 3.1) will be provided, documenting the following:
1.Chemical analysis
2.Mechanical properties
3.Surface hardness
4.Non metallic inclusion
5.Heat treatment report
6.Grain size
7.Forging ratio
8.Ultrasonic test report
C45 Steel Supply Form & Size
- Round Bars: Dia.80 – 1,000mm as Forged
- Flat / Square Bars: Thickness Max.800mm
- Shafts, Rollers, Blocks,Tubes: Customized or According to Drawing
- Rolled Round Bars: Dia.16 – 350mm with UT Assurance
Heat treatment: Normalizing (+N), Annealing (+A),Q&T
Surface finish:Black / Rough turned / Peeled
