X750 Sheet, Coil - AMS 5598, AMS 5542
Inconel Alloy® X-750 is a nickel-chromium austenitic alloy similar to Alloy 600 but made precipitation-hardenable by additions of aluminum and titanium. It has good resistance to corrosion and oxidation along with high tensile and creep-rupture properties at high temperatures to 1300°F (700°C). Extended applications that require high strength at temperatures beyond 1100°F (593°C) may require a solution treatment, with air cooling between intermediate and final aging.
Nickel Alloy X-750 displays excellent workability including machinability and welding. It is precipitation hardenable. This material has excellent relaxation resistance and is non-magnetic. It has enhanced elevated temperature strength properties to 1300ºF (700°C) and oxidation resistance to 1800ºF (983˚C). Inconel® X-750 is resistant to a wide variety of industrial corrosives under both oxidizing and reducing conditions. This alloy also has excellent resistance to chloride stress corrosion cracking in the fully age hardened condition.
X750 Inventory Size Ranges
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Standard Inventory Specifications
- UNS N07750
- AMS 5598
- AMS 5542
Other industry standards we comply with:
- PWA-LCS
- GE Aircraft Engine (GT193)
- GE Aviation S-SPEC-35 AeDMS S-400
- RR SABRe Edition 2
- DFARS Compliant
- W.Nr 2.4669
Common Trade Names
- ATI X-750 (™ Allegheny Technologies)
- Inconel X750 (® Special Metals)
- Alloy X 750
- Inconel® X-750
Common Applications of X750
- Structural members in hot sections of gas turbines such as discs, thrust reversers, wheels and ducts
- Aircraft structures
- Rocket engines
- Nuclear reactors
- Heat treat fixtures
- Cryogenic vessels, springs, and fasteners
- Wire formulation with heat temper used in springs at elevated temperatures
- Exhaust valves of diesel engines
- Applications that benefit from an alloy with high creep-rupture strength
Chemical Composition
| Element | Percent by Weight | |
|---|---|---|
| Ni Co | Nickel + Cobalt | 70% min |
| Cr | Chromium | 14-17% |
| Fe | Iron | 5-9% |
| Ti | Titanium | 2.25-2.75% |
| Al | Aluminum | 0.4-1.0% |
| No Ta | Nobelium & Tantalum | 0.7-1.2% |
| Si | Silicon | 0.50% max |
| S | Sulfur | 0.01% max |
| Cu | Copper | 0.50% max |
| C | Carbon | 0.08% max |
| Co | Cobalt | 1.00% max |
Alloy X750 Physical Properties
| Physical Property | Values |
|---|---|
|
Density |
0.299 |
|
Melting Range |
2540-2600°F, 1395-1425°C |
|
Curie Temperature |
-225°F as hot-rolled -193 triple-heat-treated (2100°F/2 hr, A.C., +1500°F/24 hr, A.C. + 1300°F/20 hr, A.C.) |
|
Magnetic Permeability |
70°F, 200H, as hot rolled 1.0020 1.0035 triple-heat-treated (2100°F/2 hr, A.C., +1500°F/24 hr, A.C., +1300°F/20 hr, A.C.) |
|
Emissivity Oxidized Surface |
600°F 0.895, 2000°F 0.925 |
|
Linear Contraction During Precipitation Treatment |
1300°F/20 hr), in/in Hot-rolled 0.00044, 20% Cold-rolled 0.00052, Annealed 0.00026 |
INCONEL® is a registered trademark of the Special Metals Corporation group of companies.
Mechanical Properties and Yield Strength of Alloy X750
|
Minimum Specified Properties |
|
|---|---|
|
Ultimate Tensile Strength, ksi |
120 |
|
.02% Yield Strength, ksi |
60 |
|
Elongation, % |
30 |
|
Heat Treatment |
|
|---|---|
|
AMS 5541 |
1300°F/20 hr., AC (Constant-temperature precipitation treatment). |
|
AMS 5598 |
1350°F/8 hr., FC to 1150°F, Hold at 1150°F for total precipitation-treating time of 18 hr., AC (Furnace-cool precipitation treatment). |
INCONEL® is a registered trademark of the Special Metals Corporation group of companies.
*The technical data provided is for information only and not for design purposes. It is not warranted or guaranteed.