AISI / SAE 1527 Round Bar (UNS G15270)
AISI / SAE 1527 Round Bar is a high-manganese carbon steel designed for improved strength, toughness, and hardenability compared to standard plain carbon steels. It is commonly used in forged and heat-treated components where good core strength and wear resistance are required.
Key Features
- Higher manganese content for better hardenability
- Good strength and toughness after heat treatment
- Improved wear resistance compared to 1025–1030 steels
- Suitable for carburizing and quench & temper processes
- Good machinability in normalized condition
- Cost-effective alternative to low-alloy steels
Equivalent Grades 1527 Round Bar
| Standard | Equivalent |
|---|---|
| AISI / SAE | 1527 |
| UNS | G15270 |
| EN | 20MnCr5 (Closest) |
| DIN | 1.7147 (Closest) |
| IS | IS 4432 Gr 20MnCr5 (Closest) |
Sizes
- Diameter: 12 mm to 300 mm
- Length: Random, Cut Length, or as per customer requirement
AISI 1527 Chemical Composition
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.24 – 0.32 |
| Manganese (Mn) | 1.35 – 1.65 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.050 |
| Iron (Fe) | Balance |
SAE 1527 Mechanical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength | 650 – 850 MPa |
| Yield Strength | ≥ 400 MPa |
| Elongation | ≥ 14% |
| Hardness | ~ 190 – 230 HB |
SAE 1527 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 1527 Round Bar
- Hot Rolled Round Bar
- Normalized Carbon Steel Bar
- Forging Quality Bar
Applications
- Forged automotive components
- Gears, pinions, and shafts
- Axles and spindles
- Heavy-duty machinery parts
- Agricultural and mining equipment
- Heat-treated engineering components
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