铝合金棒材
概述
2618 aluminum alloy round bar is a high-strength aluminum-copper alloy developed for applications requiring high mechanical strength and good performance at elevated temperatures. 2618A is commonly identified as EN AW-2618A and is used in aerospace, high-performance engineering and other demanding applications. Vertex Alloy supplies 2618 and 2618A round bar in various diameters, lengths and tempers according to customer specifications.
尺寸范围
- 8–300 mm
牌号标准
| 标准体系 | 数值 |
|---|---|
| AA 2618 / AA 2618A | - |
| EN AW-2618 / EN AW-2618A | - |
| 2A80 (LD8) | - |
| AlCu2Mg1.5NiFe | - |
| 3.2216 | - |
| Aluminum 2618 | - |
化学成分
| 元素 | 数值 |
|---|---|
| Si | 0.10–0.25 |
| Fe | 0.90–1.30 |
| Cu | 1.90–2.70 |
| Mg | 1.30–1.80 |
| Ni | 0.90–1.20 |
| Zn | ≤0.10 |
| Ti | 0.04–0.10 |
| Al | Remainder |
机械性能
| 性能 | 数值 |
|---|---|
| Tensile strength | 350–520 MPa |
| Yield strength | ≥250 MPa |
| Elongation | ≥10% |
| Hardness | 120–150 HV |
| High-temp strength (200–250°C) | Tensile ≥300 MPa |
物理性能
| 性能 | 单位 | 数值 |
|---|---|---|
| Density | - | ~2.76 g/cm³ |
| Melting range | - | 549–638°C |
| Elastic modulus | - | ~74 GPa |
| Thermal conductivity | - | 146 W/(m·K) |
| Coefficient of thermal expansion | - | 22.5 × 10⁻⁶ /K (20–100°C) |
| Electrical resistivity | - | 0.058 μΩ·m |
应用场景
- Internal combustion engine pistons and cylinder heads
- Compressor impellers and blower impellers
- Aerospace engine components (turbine disks, high-temperature structural forgings)
- High-performance automotive engine parts (connecting rods, intake manifolds)
- Die-casting and plastic molds requiring thermal shock resistance