Inconel 725 規格
INCONEL® 合金 725 指定為 UNS N07725。
棒材和線材：ASTM B 805、ASME 規範案例 2217
商標聲明：某些名稱是特定製造商的商號和/或商標。 American Special Metals, Corp. 不隸屬於任何製造商。將填寫訂單以滿足來自任何可用來源的規格。列出的名稱僅供參考，以幫助識別符合所列規格的產品。
Inconel® 725 is a Registered Trademark of Special Metals Corporation and Its subsidiaries.
American Special Metals, Corp. 盡一切合理努力確保本文件中數據的準確性和正確性，但對數據的準確性、正確性或可靠性不作任何陳述或保證。所有數據僅供一般參考，不提供設計建議。用戶有責任在實際服務條件下測試特定合金
INCONEL® alloy 725 Nickel Based Alloy
Inconel 725/INCONEL® alloy 725 (UNS N07725) is a nickel- chromium-molybdenum-niobium alloy that is highly resistant to corrosion and is age hardenable for extremely high strength. It has essentially the same corrosion resistance as INCONEL alloy 625, which is widely used in a broad range of severely corrosive environments. The strength of age-hardened INCONEL alloy 725 is of the order of twice that of annealed alloy 625. Because the strength of alloy 725 is developed by heat treatment, not by cold work, ductility and toughness remain high. Also, strength can be imparted to large or non-uniform sections that cannot be strengthened by cold work.
The chemical composition of INCONEL alloy 725 is given in Table 1. High levels of nickel and chromium provide corrosion resistance in reducing and oxidizing environments. The substantial molybdenum content enhances resistance to reducing media and provides a high degree of resistance to pitting and crevice corrosion. Additionally, the combination of elements makes the alloy resistant to hydrogen embrittlement and stress- corrosion cracking.
The properties of INCONEL alloy 725 are used for a range of applications that require outstanding corrosion resistance along with high strength. The alloy is used for hangers, landing nipples, side pocket mandrels and polished bore receptacles in sour gas service, where it resists the effects of hydrogen sulfide, chloride, and carbon dioxide. The alloy is also attractive for high strength fasteners in marine applications, where it resists corrosion, pitting and crevice attack in sea water.
Inconel 725 Chemical Composition:
下表顯示 chemical composition of Inconel 725™.
| 元素 | 內容 （％） |
|---|---|
| 鎳、鎳 | 55 – 59 |
| 鉻，Cr | 19 – 22.5 |
| 鐵、鐵 | 9 |
| 鉬, Mo | 7 – 9.50 |
| Niobium, Nb (Columbium, Cb) | 2.75 – 4 |
| 鈦, Ti | 1 – 1.70 |
| 鋁 | 0.35 |
| 錳, Mn | 0.35 |
| 矽，是的 | 0.20 |
| 碳，C | 0.030 |
| 磷, P | 0.015 |
| 硫磺 | 0.010 |
Inconel 725 Physical Properties:
The physical properties of Inconel 725™ are given in the following table.
| 特性 | 公制 | 帝國 |
|---|---|---|
| 密度 | 8.3 g/cm³ | 0.3 lb/in³ |
| 熔點 | 1271-343ºC | 2320-2449ºF |
Inconel 725 Mechanical Properties:
The mechanical properties of Inconel 725™ are displayed in the following table.
| 特性 | 公制 | 帝國 |
|---|---|---|
| 抗拉強度 | 855 MPa | 124000 psi |
| Yield strength (@0.2%) | 427 MPa | 62000 psi |
| 彈性模量 | 204 GPa | 29600 ksi |
| Poissons ratio | 0.31 | 0.31 |
| 斷裂伸長率 | 57% | 57% |
| Hardness, Rockwell C | 5個 | 5個 |
Inconel 725 Thermal Properties:
The thermal properties of Inconel 725™ are displayed in the following table.
| 特性 | 公制 | 帝國 |
|---|---|---|
| 熱膨脹係數 (@21-100°C/69.8-212°F) | 13 µm/m°C | 7.22 µin/in°F |
