X750 Inconel Alloy from Alloy Wire International

Inconel X750* W.NR: 2.4669, UNS: N07750 , *Trade name of Special Metals Group of Companies

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. It is widely used for high temperature conditions but is not as strong as Nimonic 90. Without the addition of Co X750 for nuclear reactors. Applications include nuclear reactors, gas turbines, rocket engines, pressure vessels and aircraft structures.

Approx Chemical Composition (%)

Ni
Cr
Fe

>70
14-17
5-9

Ti
Al
Nb

2.25-2.75
0.4-1.0
0.7-1.2

Density
(g/cm³)

8.28

Melting
Point (°C)

1430

Coefficient of Expansion

12.6 µ m/m °C at 21 - 93°C

Standards

AMS 5699 (Spring Temper)
AMS 5698 (No. 1 Temper)
ASTM B637
BS HR505

Heat Treatments

No. 1 Temper

Age at 732°C – 16 Hrs – A/C

Spring Temper

Age at 650°C – 4 Hrs – A/C

Spring Temper
( 3 Pt HT )

Solution anneal at 1150°C–2 Hrs–A/C
+ Stabilize at 843°C–24 Hrs–A/C
+ Precipitation harden at 704°C–20 Hrs–A/C

Approx. Tensile

No. 1 Temper

900 – 1150 N/mm²

Aged

1300 – 1450 N/mm²

Spring Temper

1100 – 1500 N/mm²

Aged

1350 – 1750 N/mm²

3 part Heat Treated

1100 – 1250 N/mm²

Rigidity Modulus

75.8 kN/mm²

Youngs Modulus

No. 1 Temper aged

213.7 kN/mm²

Spring Temper + age

218 kN/mm²

Spring Temper + 3 Pt HT

212.4 kN/mm²

Approx.
Service Temperatures

No. 1 Temper aged

up to 550°C

Spring Temper + age

up to 370°C

Spring Temper + 3 Pt HT

up to 550°C

Click here for X750 standard available sizes and forms...

If any of the X750 specifications do not fall within your requirements please enquire:
Tel: +44 (0)1384 566775 or e-mail us at:



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