AISI / SAE 1038 Round Bar (UNS G10380)
AISI / SAE 1038 Round Bar is a medium-carbon steel known for its higher strength, hardness, and wear resistance compared to lower carbon grades such as 1035. It responds well to heat treatment and is widely used in automotive, machinery, and engineering applications that require improved mechanical strength and durability.
Key Features
- Medium carbon steel with enhanced strength and hardness
- Good wear and abrasion resistance
- Suitable for quenching and tempering
- Good machinability in normalized condition
- Reliable performance under moderate to high stress
- Cost-effective engineering steel
Equivalent Grades
| Standard | Equivalent |
|---|---|
| AISI / SAE | 1038 |
| UNS | G10380 |
| EN | C38 |
| DIN | 1.0510 |
| IS | IS 1570 Gr 38C8 |
Sizes
- Diameter: 6 mm to 350 mm
- Length: Random, Cut Length, or as per customer requirement
AISI 1038 Round Bar Chemical Composition
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.35 – 0.42 |
| Manganese (Mn) | 0.60 – 0.90 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.050 |
| Iron (Fe) | Balance |
SAE 1038 Mechanical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength | 600 – 750 MPa |
| Yield Strength | ≥ 355 MPa |
| Elongation | ≥ 16% |
| Hardness | ~ 180 – 210 HB |
UNS G10380 Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | ~1460 °C |
| Modulus of Elasticity | 200 GPa |
| Thermal Conductivity | 48 W/m·K |
Types of 1038 Round Bar
- Hot Rolled Round Bar
- Cold Drawn Round Bar
- Normalized Carbon Steel Bar
- Quenched & Tempered Bar
Applications
- Automotive shafts and axles
- Gears, sprockets, and pinions
- Forged machinery components
- Heavy-duty fasteners
- Couplings and spindles
- General engineering applications
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