General Description
Inconel 718 is a age-hardenable alloy that is highly corrosion
resistant. Its high strength, corrosion resistance, and ease of
weld fabrication have made alloy 718 the most popular superalloy
used in industry.
Inconel 718 has good to excellent resistance to organic acids,
alkalies and salts, and seawater. Fair resistance to sulfuric,
hydrochloric, hydrofluoric, phosphoric, and nitric acids. Good to
excellent resistance to oxidation, carburization, nitridation, and
molten salts. Fair resistance to sulfidation.
Age-hardenable Inconel 718 combines high-temperature strength up to
700 °C (1300 °F) with corrosion resistance and excellent
fabricability. Its welding characteristics, especially its
resistance to postweld cracking, are outstanding. Because of these
attributes, Inconel 718 is used for parts for aircraft turbine
engines; high-speed airframe parts, such as wheels, buckets, and
spacers; high-temperature bolts and fasteners, cryogenic tankage,
and components for oil and gas extraction and nuclear engineering.
Grade | Ni% | Cr% | Mo% | Nb% | Fe% | Al% | Ti% | C% | Mn% | Si% | Cu% | S% | P% | Co% |
Inconel 718 | 50-55 | 17-21 | 2.8-3.3 | 4.75-5.5 | Bal. | 0.2-0.8 | 0.7-0.15 | Max 0.08 | Max 0.35 | Max 0.35 | Max 0.3 | Max 0.01 | Max 0.015 | Max 1.0 |
Chemical Composition
Specifications
Grade | UNS | Werkstoff Nr. |
Inconel 718 | N07718 | 2.4668 |
Physical Properties
Grade | Density | Melting Point |
Inconel 718 | 8.2g/cm3 | 1260°C-1340 °C |
Mechanical Properties
Inconel 718 | Tensile Strength | Yield Strength | Elongation | Brinell Hardness (HB) |
Solution Treatment | 965 N/mm² | 550 N/mm² | 30% | ≤363 |
Our Production Specification
| Bar | Forging | Pipe/Tube | Sheet/Strip | Wire |
Standard | ASTM B637
AMS 5662
AMS 5664 | ASTM B637 | AMS 5589/5590 | ASTM B670 | AMS 5832 |
Size Range
Inconel 718 wire, bar, rod, strip, forging, plate, sheet, tube,
fastener and other standard forms are available.
