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Inconel X-750

Inconel X-750




Alloy X-750 is a precipitation-hardenable alloy which has been used in applications such as high temperature structural members for gas turbines, jet engine parts, nuclear power plant applications, heat-treating fixtures, forming tools, and extrusion dies. The alloy is highly resistant to chemical corrosion and oxidation and has high stress-rupture strength and low creep rates under high stresses at temperatures up to 1500°F (816°C) after suitable heat treatment.


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


Alloy X-750 is a precipitation-hardenable alloy which has been used in applications such as high temperature structural members for gas turbines, jet engine parts, nuclear power plant applications, heat-treating fixtures, forming tools, and extrusion dies. The alloy is highly resistant to chemical corrosion and oxidation and has high stress-rupture strength and low creep rates under high stresses at temperatures up to 1500°F (816°C) after suitable heat treatment.


In what form is Inconel 750 Available at ISHWAR STEEL CORPORATION


  • Sheet
  • Plate
  • Bar
  • Pipe & Tube (welded & seamless)
  • Flanges
  • Wire

Type Analysis

Element Min Max
Carbon -- 0.08
Manganese -- 0.30
Silicon -- 0.50
Sulfur -- 0.01
Nickel + Cobalt 70.0 min
Chromium 14.0 17.0
Iron 5.00 9.00
Aluminum 0.40 1.00
Titanium 2.25 2.70
Copper -- 0.50
Cb + Ta 0.70 1.20

Physical Properties


Density
lb/cu in...................................... 0.300
kg/cu m...................................... 8303

Melting Range

°F........................................ 2540/2600
°C.........................................1393/1427

Thermal Conductivity

Temperature Btu-in/ft²-hr-°F W/m-K
°F °C
300
600 
1000 
1200 
1400
1600		 149 
316 
538 
649 
760 
871		 117 
142 
184
199 
218 
245		 16.9 
20.5
26.5
28.7
31.4 
35.3

Electrical Resistivity

Condition ohm-cir mil/ft microhm-mm
At Room Temperature
Hot Rolled
Solution Treated
Solution Treated
and Aged		 764
716

746		 1270
1190

1240

Modulus of Elasticity

Temperature psi x 10(6) MPa x 10(6
°F °C
80
500
1000
1350
1500		 26.7
260.0
538.0
732.0
816.0		 31.0
28.7
25.0
21.0
18.5		 213.7
197.9
172.4
144.8
127.6

Typical Mechanical Properties

Room Temperature Mechanical Properties


Temper

Tensile Strength,
psi

Yield Strength
0.2% offset, psi

Elongation
in 2", %

Hardness,
Brinell

Hot-finished + 1300°F/20 hr,A.C

Hot-finished + Annealed
1800°F/1 hr, A.C + 1350°F/
8 hr, F.C. 100°F/hr to 
1150°F (total 18 hr), A.C.

Hot-finished + 1625°F/24 hr,
A.C + 1300°F/20 hr, A.C.

Cold-rolled, annealed +
1300°F/20 hr, A.C.

170,000-206,000


162,000-193,000



160,000-188,000



160,000-197,000

120,000-163,000


115,000-142,000



100,000-135,000



105,000-150,000

25-15


30-15



30-15



30-20

313-400


300-390



302-363



300-400

 

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