718 alloy

Hitech

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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