List of Alloys & profiles

List of Alloys & profiles

Alloy Wire International

Datasheet: Inconel® X750

Inconel® X750

X750 is a Nickel-Chromium alloy made precipitation hardenable by additions of Al and Ti, having creep-rupture strength at high temperatures to about 700°C (1290°F). It is widely used for high temperature conditions but is not as strong as Nimonic 90.

Available in all profile options

alloy featured image inconel Inconel® X750

Key Features

Good creep rupture strength at high temperatures
Not as strong as Nimonic 90
Very good at cryogenic temperatures
Age hardenable
High temperature dynamic applications^^

Typical Applications

Nuclear reactors
Gas turbines
Rocket engines
Pressure vessels
Aircraft structures


Designations

W.NR 2.4669
UNS N07750
AWS 014

Specifications

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)

Chemical Composition

ElementMin %Max %
C0.08
Mn1.00
Si0.50
S0.01
Cr14.0017.00
Ni70.00
Nb/Cb0.701.20
Ti2.252.75
Al0.401.00
Fe5.009.00
Co1.00
Ta0.05
Cu0.50

Alloy Details

DensityMelting PointCoefficient of ExpansionModulus of RigidityModulus of Elasticity
8.28g/cm³1430 °C12.6 μm/m °C (20 – 100 °C)75.8 kN/mm²218.0 kN/mm² (Spring Temper + Aged)
212.4 kN/mm² (Spring Temper + 3 Part Heat Treated)
213.7 kN/mm² (No.1 Spring Temper + Aged)
0.299 lb/in³2600 °F7.0 x 10-6 in/in °F (70 – 212 °F)10994 ksi31619 ksi (Spring Temper + Aged)
30806 ksi (Spring Temper + 3 Part Heat Treated)
30995 ksi (No.1 Spring Temper + Aged)

Heat treatment of finished parts

Condition as supplied by AWITypeTemperatureTimeCooling
Spring TemperAge Harden650 °C (1200 °F)4hrAir
Spring Temper (3 Part)Anneal
Stabilize
Age Harden
1150 °C (2100 °F)
843 °C (1550 °F)
704 °C (1300 °F)
2hr
24hr
20hr
Air
Air
Air
No. 1 TemperAge Harden730 °C (1350 °F)16hrAir

Properties

Annealed
Approx. tensile strength<1000 N/mm²<145 ksi
No. 1 Temper
Approx. tensile strength900 – 1150 N/mm²130 – 167 ksi
Spring Temper
Approx. tensile strength1100 – 1500 N/mm²160 – 218 ksi
No. 1 Temper + Aged
Approx. tensile strength1150 – 1450 N/mm²167 – 210 ksi
Approx. operating temperature depending on load^^ and environment-200 to +550 °C-330 to +1020 °F
Spring Temper + Aged
Approx. tensile strength1350 – 1750 N/mm²196 – 254 ksi
Approx. operating temperature depending on load^^ and environment-200 to +370 °C-330 to +700°F
Spring Temper + 3 Part Heat Treated
Approx. tensile strength>1030 N/mm²>149 ksi
Approx. operating temperature depending on load^^ and environment-200 to +550 °C-330 to +1020 °F

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