Difference Between Inconel X750 and Inconel 718

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). INCONEL® alloy 718 (UNS N07718/W.Nr. 2.4668) is a high-strength, corrosion-resistant nickel chromium material used at -423° to 1300°F.

Inconel X750

Inconel X750 Chemical Composition

Grade Ni Cr Al C Mn Ti Cu Si S
Inconel X-750 70.0 min 14.0 - 17.0 0.40 - 1.0 .08 max 1.00 max 2.25 - 2.75 0.50 max .50 max .01 max

Inconel X750 Melting Point, Density and Tensile Strength

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.28 g/cm3 1430°C 1267 MPa 868 MPa 25 %

Inconel X750 Equivalent Grades

STANDARD WERKSTOFF NR. UNS
Inconel X-750 2.4669 N07750

Inconel 718

Inconel 718 Chemical Composition

Grade C Mn Si Fe S Cr Al Ni
718 min. bal 17.0 0.2 50.0
max. 0.08 0.35 0.35 bal 0.01 21.0 0.8 55.0

Inconel 718 Melting Point, Density and Tensile Strength

Element Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
825 8.14 g/cm3 1400 °C (2550 °F) Psi – 80,000 , MPa – 550 Psi – 32,000 , MPa – 220 30 %

Inconel 718 Equivalent Grades

Grade UNS No Old British Euronorm GOST Japanese JIS
BS En No AFNOR
Inconel 718 N07718 2.4668