ASTM A105 Round Bar (UNS K03504)
ASTM A105 Round Bar is a forged carbon steel bar widely used for high-temperature and high-pressure service. It offers excellent strength, toughness, and machinability, making it a preferred material for pressure-containing components in oil & gas, petrochemical, power generation, and refinery industries.
Key Features
- Designed for high-temperature and high-pressure applications
- Excellent strength and impact toughness
- Good machinability and weldability
- Reliable performance under fluctuating pressure conditions
- Cost-effective carbon steel solution
- Suitable for forging applications
Equivalent Grades
| Standard | Equivalent |
|---|---|
| ASTM | A105 |
| ASME | SA 105 |
| EN | EN 1.0460 |
| DIN | C22.8 |
| IS | IS 2062 (Comparable) |
Sizes
- Diameter: 10 mm to 600 mm
- Length: Random, Cut Length, or as per customer requirement
ASTM A105 Round Bar Chemical Composition
| Element | Percentage (%) |
|---|---|
| Carbon (C) | ≤ 0.35 |
| Manganese (Mn) | 0.60 – 1.05 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.040 |
| Silicon (Si) | 0.10 – 0.35 |
| Iron (Fe) | Balance |
UNS K03504 Mechanical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength | 485 – 655 MPa |
| Yield Strength | ≥ 250 MPa |
| Elongation | ≥ 22% |
| Impact Strength | As per specification |
A105 Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | ~1425 °C |
| Modulus of Elasticity | 200 GPa |
| Thermal Conductivity | 49 W/m·K |
Types of ASTM A105 Round Bar
- Forged Round Bar
- Normalized Bar
- Machined Round Bar
- Custom Cut Bar
Applications
- Flanges and forged fittings
- Valves and pressure components
- Oil & gas pipelines
- Petrochemical and refinery equipment
- Power generation systems
- Heat exchangers and pressure vessels
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