AISI / SAE 1045 Round Bar (UNS G10450)
AISI / SAE 1045 Round Bar is a medium-carbon steel widely used for its excellent balance of strength, toughness, and wear resistance. With higher carbon content than 1040 and 1042 grades, it responds very well to heat treatment, making it a preferred choice for shafts, gears, axles, and high-strength mechanical components.
Key Features
- Medium carbon steel with high strength and hardness
- Excellent wear and abrasion resistance
- Very good response to quenching and tempering
- Good machinability in normalized condition
- Reliable performance under moderate to high stress
- Cost-effective alternative to alloy steels
Equivalent Grades
| Standard | Equivalent |
|---|---|
| AISI / SAE | 1045 |
| UNS | G10450 |
| EN | C45 |
| DIN | 1.0503 |
| IS | IS 1570 Gr 45C8 |
Sizes
- Diameter: 6 mm to 400 mm
- Length: Random, Cut Length, or as per customer requirement
AISI 1045 Round Bar Chemical Composition
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.43 – 0.50 |
| Manganese (Mn) | 0.60 – 0.90 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.050 |
| Iron (Fe) | Balance |
SAE 1045 Mechanical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength | 625 – 800 MPa |
| Yield Strength | ≥ 375 MPa |
| Elongation | ≥ 14% |
| Hardness | ~ 190 – 230 HB |
1045 Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | ~1460 °C |
| Modulus of Elasticity | 200 GPa |
| Thermal Conductivity | 46 W/m·K |
Types of 1045 Round Bar
- Hot Rolled Round Bar
- Cold Drawn Round Bar
- Normalized Carbon Steel Bar
- Quenched & Tempered Bar
Applications
- Shafts and axles
- Gears, pinions, and sprockets
- Crankshafts and couplings
- Bolts, studs, and fasteners
- Forged machinery components
- Heavy-duty engineering applications
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