Inconel 718 is a precipitation-harden able, nickel-chromium alloy containing also-significant amounts of iron, niobium and molybdenum, along with lesser amounts of aluminum and titanium. It combines corrosion resistance and high strength with outstanding weld ability, including resistance to post weld cracking. Inconel 718 has excellent creep-rupture strength at temperatures to 1300°F (700°C). Inconel 718 is used in gas turbines, rocket motors, space-craft, nuclear reactors, pumps and tooling.more
Unit of Measure

Specifications

Material

Inconel®

Shapeform

Plates

Thickness

5/8 inches

Thickness

0.625 inches15.87 mm

Plate Weight per Unit Area

0.197 lbs/in²138.5047112 kg/m²

Nickel Alloy Compositions

Alloy

Inconel® 718

Basic Composition

18.0% Chrominum 18.5% Iron 3.0% Molybdenum 5.0% Niobium 54.0% Nickel

Density

0.296 lbs/in³8.19 g/cm³

ASTM Specification

ASTM B670 SAE 5597 UNS N07718

Typical Mechanical Properties

Melting Temperature Range

2300 to 2437 ºF1260 to 1336 ºC

Rupture Strength (1000 h at 1100°F/595°C)

110000 psi760 MPa

Rupture Strength (1000 h at 1200°F/650°C)

86000 psi590 MPa

Rupture Strength (1000 h at 1300°F/705°C)

53000 psi370 MPa

Rupture Strength (1000 h at 1400°F/760°C)

24000 psi170 MPa