C45 / DIN 1.0503 Carbon Steel |AISI 1045|S45C
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.
1.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 |
| 1045 | 0.43-0.5 | - | 0.6-0.9 | ≤ 0.04 | ≤ 0.05 | - |
| S45C | 0.42-0.48 | 0.15-0.35 | 0.6-0.9 | ≤ 0.035 | ≤ 0.035 | - |
2.Equivalent Grade
| AISI/ASTM | BS | JIS | DIN |
| 1045 | 080M40/EN8 | S45C | CK45 |
3.Supply Size for C45
Shape:Round / Square / Flat Bars, Shafts, Rollers, Blocks.
Forged Round bar
Diameter: 80-1,000mm
Forged Square/Flat/Block
Thickness:120-800mm
Width:120-1,200mm
Surface condition: Black/Rough turned
4.Heat Treatment & Mechanical Property
C45 Steel Normalizinging Details
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
Mechanical Property-C45 Normalizing
| 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 Details
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
Mechanical Property-C45 Annealing
| Tensile Strength | Yield Strength | Elongation | Reduction of Area | Impact Charpy-V | Hardness |
| ≥532Mpa | ≥280Mpa | ≥32% | ≥49% | ≥60J | 160-200HBW |
C45 Steel Quenching Details
2.Three steps for steel heating,and suitable holding time.
3.Water or oil Quench
4.Tempering immediately after quenched.
C45 Quenching Diagram
Mechanical Property-C45 Quenched followed by different tempering temperature
| 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 |
