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Inconel 718 ASTM B637 ASME SB-637 Forging Solution 1700-1850 ℃ Round Bar UNS N07718
Inconel 718 is a nickel-based super alloy that is well suited for applications requiring high strength in temperature ranges from cryogenic up to 1400°F. Inconel 718 also exhibits excellent tensile and impact strength.
Typical chemical analysis of Inconel 718.
| Element | Percentage |
| Carbon | 0.08 max |
| Manganese | 0.35 max |
| Phosphorus | 0.015 max |
| Sulfur | 0.015 max |
| Silicon | 0.35 max |
| Chromium | 17-21 |
| Nickel | 50-55 |
| Molybdenum | 2.80-3.30 |
| Columbium | 4.75-5.50 |
| Titanium | 0.65-1.15 |
| Aluminum | 0.20-0.80 |
| Cobalt | 1.00 max |
| Boron | 0.006 max |
| Copper | 0.30 max |
| Tantalum | 0.05 max |
| Iron | Balance |
Inconel 718 has good resistance to oxidation and corrosion at temperatures in the alloy’s useful strength range in atmospheres encountered in jet engines and gas turbine operations.
Typical physical properties of Inconel 718 are summarized in the table below.
| Solution Treated | Solution Treated and Aged | |
| Density | 0.296 lb/in3 (8.192 g/cm3) | 0.297 lb/in3 (8.22 g/cm3) |
| Specific Gravity | 8.19 | 8.22 |
| Melting Range | 2500-2600°F | 1370-1430°C |
The thermal conductivity at various temperatures for Inconel 718 are given in the following table.
| Temperature Range | Co-Efficients | ||
| °C | °F | W/m.K | Btu.ft/ft2.hr.°F |
| 0-100 | 532-212 | 6.5 | 11.2 |
The room temperature strength of the Inconel 718 alloy is substantially increased by precipitation heat treatment as the following data indicate. These values are properties specified for sheet, strip and plate in AMS 5596 and AMS 5597.
| Yield Strength | Ultimate Tensile Strength | Elongation | |
| Sheet and strip | 80,000 psi (550 MPa) | 14,000 psi (965 MPa) | 30 (min) |
| Plate | 105,000 psi (725 MPa) | 150,000 psi (1,035 MPa) | 30 (min) |
Solution trated plus precipitation heat treated.
| Yield Strength | Ultimate Tensile Strength | Elongation |
| 150,000 (1,035 MPa) | 180,000 psi (1,240 MPa) | 12 (min) |
Typical short time tensile properties of Inconel 718 as a function of temperature are shown here for material solution treated and aged as follows:
United Performance Metals Inconel 718 is supplied to AMS 5596/5597 and has a UNS designation N07718.
Inconel 718 is typically used for:
For sizes and availability of Inconel 718 contact United Performance Metals.
Source: United Performance Metals
For more information on this source, please visit United Performance Metals
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