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Inconel® Alloy X-750 / UNS N07750

INCONEL® alloy X-750 is designated as UNS N07750 and W. Nr. 2.4669. The alloy is stated in NACE MR-01-75.

Rod, Bar and Forging Stock: – ASTM B 637; ASME SB 637; ISO 9723-9725; AMS 5667; AMS 5671; AMS 5747; EN 10269.

Plate, Sheet and Strip: AMS 5542 and 5598.

Wire: BS HR 505, AMS 5698; AMS 5699.

Product introduction:

Common Trade Names: Inconel X750, Haynes X750, Alloy X750, Nickel X750, Pyromet X750, NickelvacX750, Nicorros® 7016

INCONEL® alloy X-750 (UNS N07750/W. Nr. 2.4669) is a precipitation-hardenable nickel-chromium alloy used for its corrosion and oxidation resistance and high strength at temperatures to 1300°F. Although much of the effect of precipitation hardening is lost with increasing temperature over 1300°F, heat-treated material has useful strength up to 1800°F. Alloy X-750 also has excellent properties down to cryogenic termperatures.

Depending on the application and the properties desired, various heat treatments are employed. For service above 1100°F, particularly where loads are to be sustained for long times, optimum properties are achieved by solution treating (2100°F) plus stabilization treating (1550°F) plus precipitation treating (1300°F). For service below 1100°F, the alloy may be strengthened by precipitation treating after hot or cold working or by precipitation treating after equalizing or solution treating. A furnace-cooling treatment is also used to develop optimum properties for some applications.

Available Product Forms:
Sheet, strip, plate, round bar, flat bar, forging stock, hexagon, wire, tube and extruded

Chemical composition:

Alloy

Inconel X 750

Min

Bal.

5.0

0.7

–

Max

Bal,

9.0

1.2

1.0

0.08

1.0

0.5

0.01

0.5

1.0

2.75

0.02

The minimum mechanical properties of an alloy at room temperature:

Density

Fusion point

Inconel and state

Tensile strength

Yield strength

Rate of

Brinell Hardness

8.25
G/CM³

1395-
1425℃

Solution treatment

RM N/MM²

RP0.2N/MM²

A5%

910

550

≤350

Executive standard:

Bar	Forging	Sheet/Strip	Wire
ASTM B637	ASTM B637	AMS 5542 AMS 5598	AMS 5698 AMS 5699

Application field

The alloy has good corrosion resistance and creep fracture strength under high temperature environment, good mechanical properties, and is widely used, and has sufficient strength and corrosion and oxidation resistance below 980℃
1. Make springs and bolts that work at high temperature; Rotor blades, impellers and other structural parts on gas turbines;
2. Thrust chamber on rocket engine;
3. Thrust reversal device on the aircraft;
4. Large high-pressure vessels;
5. Elastic air seal sheet, sealing die sheet.