C45 Carbon Steel Round Bar (UNS G10450)
C45 Round Bar is a medium carbon steel supplied in hot rolled, forged, or normalized condition and is known for its excellent balance of strength, toughness, and machinability. Identified internationally by UNS G10450, C45 steel contains approximately 0.45% carbon, making it suitable for components requiring higher strength and wear resistance compared to low carbon steels. It is widely used in mechanical and automotive engineering for stressed parts.
Key Features
- Medium carbon content for improved strength and hardness
- Good machinability in normalized or hot rolled condition
- Excellent response to heat treatment
- High wear and abrasion resistance
- Suitable for quenching and tempering
- Cost-effective material for engineering applications
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| EN | C45 / 1.0503 |
| DIN | CK45 |
| ASTM / SAE | AISI 1045 |
| JIS | S45C |
| IS | EN8 |
Sizes
- Diameter: 10 mm to 600 mm
- Length: 3 m, 6 m, or cut-to-length
- Custom sizes available on request
C45 Round Bar Chemical Composition
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.42 – 0.50 |
| Manganese (Mn) | 0.50 – 0.80 |
| Silicon (Si) | ≤ 0.40 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.045 |
UNS G10450 Mechanical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength | 570 – 700 MPa |
| Yield Strength | ≥ 330 MPa |
| Elongation | ≥ 16% |
| Hardness | 170 – 210 HB (Normalized) |
C45 Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | ~1460°C |
| Thermal Conductivity | 49 W/m·K |
| Modulus of Elasticity | 210 GPa |
Types C45 Carbon Steel Round Bar
- Hot Rolled Round Bar
- Bright Drawn Round Bar
- Forged Round Bar
- Turned & Polished Round Bar
- Heat Treated Round Bar
Applications
- Shafts and axles
- Gears and pinions
- Bolts, studs, and crankshafts
- Automotive and tractor components
- Machine parts and engineering components
- Structural and mechanical fabrication
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