China N07750 Round Bar Manufacturer
Alloy X-750 / 2.4669 is a nickel-chromium-iron alloy.Also known as Alloy X750
Which 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 temperatures.
| Chemical Composition Limits | ||||||||||||
| Weight % | Ni +(Co) | Cr | Fe | Ti | Al | Nb + (Ta) | Mn | Si | S | Cu | C | Co |
| X-750 UNS N07750 | 70 min | 14-17 | 5-9 | 2.25-2.75 | 0.40-1.0 | 0.70-1.2 | 1 max | 0.50 max | 0.01 max | 0.50 max | 0.08 max | 1 max |
| UNS N07752 is available in billets for forging. UNS N0772 has limits of 0.05% on both Carbon and Cobalt | ||||||||||||
Typical Mechanical Properties
| Material | Size | Ultimate Tensile Strength ksi | Yield Strength (0.2% Offset) Ksi | Elongation in 4D(%) | % Reduction of Area |
| Alloy X-750 Bar | Under 4.0″ | 165.0 | 105 | 20 | 25 |
| Alloy X-750 Bar | 4.0 ” and over | 160 | 100 | 15 | 17 |
| Properties as described in AMS 5667 which requires that material following 1625°F/24 hrs, AC-Equalising + precipitation treatment have the following minimum room temperature properties. Hardness will lie in the range of 302-363 BHN | |||||
Alloy X750 Equivalent grade
| UNS Number | N07750 |
| WNR Number | 2.4669 |
| Standards | ASTM B637, AMS 5542, 5598, 5670, 5671, 5247 |
Inconel X750 Heat treatment Condition
AMS 5667 – 1625°F/24hr, AC + 1300°F/20 hr, AC (Equalising plus precipitation treatment). AMS 5667 Rod, Bars and Forgings have high strength and notch rupture ductility up to 1100°F
AMS 5668 – 2100°F anneal + 1550°F/24 hr, AC, +1300°F/20hr, AC (triple heat treatment). AMS 5668 has maximum creep, relaxation and rupture strength above about 1100°F.
AMS 5670 – 1800°F anneal + 1350°F/8hr, FC to 1150°F. Hold at 1150°F for total precipitation-treating time 18 hr, AC (solution treatment plus furnace cool precipitation treatment). Due to the heat treatments AMS 5670, AMS 5671 and AMS 5747 have increased tensile properties and reduced heat treatment time service up to about 1100°F.
With a heat treatment of 1800°F anneal + 1400°F/1hr, FC to 1150°F, hold at 1150°F for total precipitation-treating time of 6 hr, AC (solution treatment plus short furnace-cool precipitation treatment). This treatment of short furnace cool aging achieves only slightly lower properties than does AMS 5670 and AMS 5671.
Standard for X750 Round bar
ASTM B 637, ASME SB 637, ISO 9723, ISO9724, ISO9725, AMS 5667, AMS 5668, AMS 5669, AMS 5670, AMS 5671, AMS 5747, EN10269
Available Sizes & Dimensions
Diameter: 6 mm – 300 mm (1/4″ to 12″)
Length: Standard 3m / 6m (Custom lengths available)
Inconel X-750 is a high-strength, corrosion-resistant nickel-chromium alloy known for its excellent performance at elevated temperatures up to 980°C (1800°F). It is widely used in aerospace, gas turbines, nuclear reactors, and high-temperature applications.
