View X-750 Standard Stock Sizes
X750 is a Nickel-Chromium alloy made precipitation hardenable by additions of Al and Ti, having creep-rupture strength at high temperatures to about 700oC (1290oF). It is widely used for high temperature conditions but is not as strong as Nimonic 90.
Inconel® X750 is also known as Nicrofer 7016, Superimphy 750, Haynes X750, Pyromet X750, and Udimet X750.
| Chemical Composition | Specifications | Designations | Key Features | Typical Applications | ||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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AMS 5667 AMS 5671 AMS 5698 (No 1 Spring Temper) AMS 5699 (Spring Temper) ASTM B637 BS HR 505 GE B14H41 ISO 15156-3 (NACE MR 0175) |
W.NR 2.4669 UNS N07750 AWS 014 |
Good creep rupture strength at high temperatures Not as strong as Nimonic 90 Very good at cryogenic temperatures Age hardenable High temperature dynamic applications^^ |
Nuclear reactors Gas turbines Rocket engines Pressure vessels Aircraft structures |
| Density | 8.28g/cm³ | 0.299 lb/in³ |
| Melting Point | 1430°C | 2600°F |
| Coefficient of Expansion | 12.6 μm/m °C (20 – 100°C) | 7.0 x 10-6 in/in °F (70 – 212°F) |
| Modulus of Rigidity | 75.8 kN/mm² | 10994 ksi |
| Modulus of Elasticity (Spring Temper + Aged) (Spring Temper + 3 Part Heat Treated) (No.1 Spring Temper + Aged) |
218.0 kN/mm² 212.4 kN/mm² 213.7 kN/mm² |
31619 ksi 30806 ksi 30995 ksi |
| Heat Treatment of Finished Parts | |||||
|---|---|---|---|---|---|
| Condition as supplied by Alloy Wire | Type | Temperature | Time (Hr) | Cooling | |
| °C | °F | ||||
| Spring Temper | Age Harden | 650 | 1200 | 4 | Air |
| Spring Temper (3 Part) | Anneal Stabalize Age Harden |
1150 843 704 |
2100 1550 1300 |
2 † 24 20 |
Air Air Air |
| No. 1 Temper | Age Harden | 730 | 1350 | 16 | Air |
| Properties | ||||
|---|---|---|---|---|
| Condition | Approx. tensile strength | Approx. operating temperature depending on load^^ and environment | ||
| N/mm² | ksi | °C | °F | |
| Annealed | 800 – 1000 | 116 – 145 | – | – |
| No 1 Temper | 900 – 1150 | 130 – 167 | – | – |
| Spring Temper | 1100 – 1500 | 160 – 218 | – | – |
| No 1 Temper + Aged | 1300 – 1450 | 188 – 210 | -200 to +550 | -330 to +1020 |
| Spring Temper + Aged | 1350 – 1750 | 196 – 254 | -200 to +370 | -330 to +700 |
| Spring Temper + 3 Part heat treated | 1100 – 1250 | 159 – 181 | -200 to +550 | -330 to +1020 |
The above tensile strength ranges are typical. If you require different please ask.
*Trade name of Special Metals Group of Companies
† for diameters below 1.00mm contact AWI quality department.
^^ Dynamic applications = active / lively / changing
