C55 Carbon Steel Round Bar (UNS G10550)
C55 Round Bar is a high carbon steel grade known for its high strength, hardness, and excellent wear resistance. With a carbon content of approximately 0.55%, this steel offers superior mechanical performance compared to medium carbon grades. Identified internationally as UNS G10550, C55 steel is widely used for applications that require high surface hardness and load-bearing capability, especially after heat treatment.
Key Features
- Higher carbon content for increased hardness and strength
- Excellent wear and abrasion resistance
- Good response to quenching and tempering
- Suitable for heavy-duty mechanical applications
- Reliable performance under high stress conditions
- Cost-effective alternative to alloy steels
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| EN | C55 / 1.1203 |
| DIN | CK55 |
| ASTM / SAE | AISI 1055 |
| JIS | S55C |
| IS | EN9 |
Sizes
- Diameter: 10 mm to 600 mm
- Length: 3 m, 6 m, or cut-to-length
- Custom sizes available on request
C55 Round Bar Chemical Composition
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.52 – 0.60 |
| Manganese (Mn) | 0.60 – 0.90 |
| Silicon (Si) | ≤ 0.40 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.045 |
UNS G10550 Mechanical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength | 700 – 850 MPa |
| Yield Strength | ≥ 450 MPa |
| Elongation | ≥ 12% |
| Hardness | 200 – 240 HB (Normalized) |
C55 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 of C55 Carbon Steel Round Bar
- Hot Rolled Round Bar
- Bright Drawn Round Bar
- Forged Round Bar
- Turned & Polished Round Bar
- Heat Treated Round Bar
Applications
- Springs and spring components
- Heavy-duty shafts and axles
- Agricultural and earthmoving equipment parts
- Gears, pins, and high-strength bolts
- Hand tools and mechanical tools
- Automotive and engineering components
Reviews
There are no reviews yet.