The relatively slow response to precipitation hardening permits repair welding of the Altemp 718 alloy even in the aged condition. The Altemp 718 alloy is usually produced by a double melt practice using consumable electrode remelt procedures to provide homogeneity and extremely clean structures. Uses include aircraft ducting and engine plumbing.
Tensile properties below are from AMS 5596 and/or AMS 5597.
Information provided by Allegheny Ludlum
| 物理性能 | 额定值 (公制) | 额定值 (英制) | 测试方法 |
|---|---|---|---|
| 密度 | g/cc | lb/in³ |
| 机械性能 | 额定值 (公制) | 额定值 (英制) | 测试方法 |
|---|---|---|---|
| 极限抗拉强度 | >= MPa | >= psi | |
| 抗张强度(屈服) | >= MPa @Strain 0.200 % | >= psi @Strain 0.200 % | |
| 伸长率 (断裂) | in 2" | ||
| 弹性模量 | GPa | ksi | |
| 泊松比 | |||
| 剪切模量 | GPa | ksi |
| 电气性能 | 额定值 (公制) | 额定值 (英制) | 测试方法 |
|---|---|---|---|
| 电阻率 | ohm-cm | ohm-cm |
| 热性能 | 额定值 (公制) | 额定值 (英制) | 测试方法 |
|---|---|---|---|
| 线性热膨胀系数 | µm/m-°C @Temperature 20.0 - 93.0 °C | µin/in-°F @Temperature 68.0 - 199 °F | |
| µm/m-°C @Temperature 20.0 - 315 °C | µin/in-°F @Temperature 68.0 - 599 °F | ||
| µm/m-°C @Temperature 20.0 - 538 °C | µin/in-°F @Temperature 68.0 - 1000 °F | ||
| 导热系数 | W/m-K @Temperature 0.000 - 100 °C | BTU-in/hr-ft²-°F @Temperature 32.0 - 212 °F | |
| 最高工作温度, Air | °C | °F | oxidation resistance to this temp |
| 构成要素属性 | 额定值 (公制) | 额定值 (英制) | 测试方法 |
|---|---|---|---|
| 铝 | |||
| Boron, B | |||
| 碳 | |||
| 铬 | |||
| 钴 | |||
| 铜 | |||
| 铁 | as balance | ||
| 锰 | |||
| 钼 | |||
| 镍 | |||
| Niobium, Nb (Columbium, Cb) | |||
| 磷 | |||
| 硅酮 | |||
| 硫 | |||
| 钛 |