合金钢棒材
概述
UNS 854620, also known as Ti-6Al-2Sn-4Zr-2Mo or Ti-6-2-4-2, is a near-alpha titanium alloy offering high strength, good fracture toughness and reliable performance at elevated temperatures. It is commonly supplied in bar and forging forms for aerospace and high-temperature engineering applications. Bar products are available to AMS 4975, while forgings are supplied to AMS 4976.
尺寸范围
- Bar Diameter: Typically 10–300 mm
- Bar Length: Up to 6000 mm
- Forgings: Custom dimensions according to drawing or specification
- Cut-to-Length: Available
- Custom Sizes: Available upon request
牌号标准
| 标准体系 | 数值 |
|---|---|
| UNS 854620 / Ti-6Al-2Sn-4Zr-2Mo / Ti-6-2-4-2 | - |
化学成分
| 元素 | 数值 |
|---|---|
| Ti | Bal |
| Al | 6.0% |
| Sn | 2.0% |
| Zr | 4.0% |
| Mo | 2.0% |
| C | ≤ 0.04% |
| Fe | ≤ 0.15% |
| N | ≤ 0.04% |
| H | ≤ 0.015% |
| O | ≤ 0.12% |
机械性能
| 性能 | 数值 |
|---|---|
| Tensile Strength | 140 ksi (965 MPa) |
| Yield Strength | 130 ksi (896 MPa) |
| Elongation | 15% |
| Hardness | Rockwell C39 |
物理性能
| 性能 | 单位 | 数值 |
|---|---|---|
| Density | - | 4.54 g/cm³ |
| Melting Range | - | Approx. 1,660–1,670°C |
| Elastic Modulus | - | Approx. 114 GPa |
| Thermal Conductivity | - | Approx. 6.7 W/m·K |
| Specific Heat | - | Approx. 0.58 kJ/kg·K |
| Coefficient of Thermal Expansion | - | Approx. 9.0 × 10⁻⁶ /°C |
应用场景
- Aerospace components
- Aircraft engine components
- High-temperature structural components
- Forged aerospace parts
- High-strength engineering components