Hitech
718 alloy
HAYNES 718 alloy
HAYNES 718 alloy is a nickel-based precipitation hardening alloy with high strength up to 650°C. Alloy 718 is widely used as a malleable alloy for forged and composite components in gas turbines, aerospace and other industrial applications. Up to 650°C, Alloy 718 has the highest strength among ductile and weldable superalloys.
De Haynes 718 legering (UNS N07718) summarized:
- High temperature alloy
- Nickel-iron-chromium-niobium-molybdenum-titanium-aluminum alloy
- Designed to combine excellent strength with good fabrication properties in annealed condition
- Use at temperatures below 650 degrees Fahrenheit (at higher temperatures, this alloy can be substituted for Haynes 282)
- Easily welded
- Used in component applications
Product description Haynes HTA - Haynes 718 alloy
Alloy 718 exhibits very high resistance to oxidizing combustion gases up to temperatures of 870°C. Alloy 718 can be deformed in the solution annealed condition both cold and hot. The weldability of Alloy 718 is generally better than that of other precipitation hardening alloys.
Chemical composition (weight %) | ||||||||||||
Ni | Co | Fe | Cr | Nb+Ta | Mo | Ti | Al | Mn | Si | C | B | Cu |
Rest | 1* | 19 | 18 | 5 | 3 | 0.9 | 0.5 | 0.35* | 0.35* | 0.5 | 0.009 | 0.1* |
*Maximum |
Density |
8,23 kg/dm3 |
Availability Haynes 718 alloy
Haynes 718 alloy is mainly available as sheet and bar. Other shapes and sizes on request. Merrem & la Porte offers the possibility of cutting, sawing and plasma or laser cutting.
UNS | N07718 | Product |
SAE | AMS 5589 | Seamless pipe and tubing |
SAE | AMS 5590 | Seamless pipe and tubing |
SAE | AMS 5596 | Plate and strip |
SAE | AMS 5597 | Plate and strip |
SAE | AMS 5662 | Bar, forging and rings |
SAE | AMS 5662 | Bar |
SAE | AMS 5664 | Bar, forging etc. |
SAE | AMS 5832 | Welding wire |
NACE | MR-01-75 | All versions |
ASTM | B 626 | Welded tubing |
DIN | 17742 No. 2.4668 | All versions |
Density 8,23 kg/dm3 | ||
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