Inconel 725
Inconel Alloy 725，属 Inconel（英科乃尔）系。合金类型：Precipitation Strengthened Alloy。主要合金元素：镍、铬、钼、铌。牌号对照：UNS N07725。公开资料列的适用行业：航空航天、海洋工程、焊接材料。
化学成分%
成分明细（%）
| 元素 | 含量（%） | 名称 |
|---|---|---|
| S | ≤0.010 | 硫 |
| Si | ≤0.20 | 硅 |
| C | ≤0.03 | 碳 |
| Mn | ≤0.35 | 锰 |
| P | ≤0.015 | 磷 |
| Nb | 2.75~4.00 | 铌 |
| Al | ≤0.35 | 铝 |
| Ti | 1.00~1.70 | 钛 |
| Fe | 2.3~14.3 | 铁 |
| Mo | 7.0~9.5 | 钼 |
| Cr | 19.0~22.5 | 铬 |
| Ni | 55.0~59.0 | 镍 |
条形长度 = 该元素含量百分比；窄段（<0.8%）未在条上显示，见上表。成分区间以执行标准与随货材质证明书为准。
牌号与性能概览
Inconel Alloy 725，属 Inconel（英科乃尔）系。合金类型：Precipitation Strengthened Alloy。主要合金元素：镍、铬、钼、铌。牌号对照：UNS N07725。公开资料列的适用行业：航空航天、海洋工程、焊接材料。
物理性能
| 密度 | 8.31 g/cm³ |
|---|---|
| 熔化范围 | 1271 · 1343 °C |
| 泊松比 | 0.31 |
力学性能
按形态与测试温度给出的典型值；实际以执行标准与随货材质证明书为准。
| Condition | Yield Strength (0.2% Offset) ksi | Yield Strength (0.2% Offset) MPa | Tensile Strength ksi | Tensile Strength MPa | Elongation % | Hardness Rc | Charpy Impact ft-lbf | Charpy Impact J |
|---|---|---|---|---|---|---|---|---|
| Round, Transverse specimens from hot-finished rounds of 4.0 to 7.5 in (102 to 190 mm) diameter. | Round, Transverse specimens from hot-finished rounds of 4.0 to 7.5 in (102 to 190 mm) diameter. | Round, Transverse specimens from hot-finished rounds of 4.0 to 7.5 in (102 to 190 mm) diameter. | Round, Transverse specimens from hot-finished rounds of 4.0 to 7.5 in (102 to 190 mm) diameter. | Round, Transverse specimens from hot-finished rounds of 4.0 to 7.5 in (102 to 190 mm) diameter. | Round, Transverse specimens from hot-finished rounds of 4.0 to 7.5 in (102 to 190 mm) diameter. | Round, Transverse specimens from hot-finished rounds of 4.0 to 7.5 in (102 to 190 mm) diameter. | Round, Transverse specimens from hot-finished rounds of 4.0 to 7.5 in (102 to 190 mm) diameter. | Round, Transverse specimens from hot-finished rounds of 4.0 to 7.5 in (102 to 190 mm) diameter. |
| Annealed | 62 | 427 | 124 | 855 | 57 | 5 | ||
| Age Hardened | 133 | 917 | 180 | 1241 | 30 | 36 | 68 | 92 |
| Round, Longitudinal specimens from hot-finished rounds of 0.5 to 7.5 in (13 to 190 mm) diameter. | Round, Longitudinal specimens from hot-finished rounds of 0.5 to 7.5 in (13 to 190 mm) diameter. | Round, Longitudinal specimens from hot-finished rounds of 0.5 to 7.5 in (13 to 190 mm) diameter. | Round, Longitudinal specimens from hot-finished rounds of 0.5 to 7.5 in (13 to 190 mm) diameter. | Round, Longitudinal specimens from hot-finished rounds of 0.5 to 7.5 in (13 to 190 mm) diameter. | Round, Longitudinal specimens from hot-finished rounds of 0.5 to 7.5 in (13 to 190 mm) diameter. | Round, Longitudinal specimens from hot-finished rounds of 0.5 to 7.5 in (13 to 190 mm) diameter. | Round, Longitudinal specimens from hot-finished rounds of 0.5 to 7.5 in (13 to 190 mm) diameter. | Round, Longitudinal specimens from hot-finished rounds of 0.5 to 7.5 in (13 to 190 mm) diameter. |
| Age Hardened | 131 | 903 | 180 | 1241 | 31 | 36 | 97 | 132 |
| Tube | Tube | Tube | Tube | Tube | Tube | Tube | Tube | Tube |
执行标准
| 标准体系 / 形态 | 标准号与说明 |
|---|---|
| UNS | N07725 |
| ASTM B983 | 无缝管 |
| ASTM B637 | Bar and Forgings |
| ASTM B805 | 棒材/线材 |
| AWS A5.14 ERNiCrMo-15 | 焊丝 |
典型应用
公开资料所列行业：航空航天、海洋工程、焊接材料。具体部件与工况：待补。
工艺与焊接要点
· 强化方式：Precipitation Strengthened Alloy。 · 工艺细节（热处理制度/焊接/加工）与耐蚀定量数据：待补——须以 ASTM/AMS 标准与厂商手册核实后补入，勿据本条推断。
同系列其他牌号英科耐尔 Inconel 系
说明：本页成分与性能数据依据公开标准与自有资料整理； 执行标准与验收以 GB/ASTM/AMS 标准及随货质保书为准；所列牌号为行业通用牌号对照， 不代表任何第三方厂商授权或代理关系。
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