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Alloy 718

(UNS N07718) Alloy 718 (Inconel 718) Nickel-chromium alloy. Alloy 718 is a high strength age-hardenable material that is easily fabricated. Alloy 718 has very good welding characteristics and is resistant to post weld cracking.


Element C Mn P S Si Cr Cu Mo Co Al Ti
Alloy 718 0.08 max 0.35 max 0.015 max 0.015 max 0.35 max 17.00-21.00 0.30 max 2.80-3.30 1.00 max 0.20-0.80 0.65-1.15

Physical Constants

Density0.296 lb./in3 annealed
Density0.297 lb./in3 annealed & aged


Forging1650ºF min 2050ºF max

Viking Forging Parameters

Rings18" O.D. max.80 lbs.
Sleeves18" O.D. max.80 lbs.
Disks16" Dia. max.80 lbs.
Round Bar7.5" Dia. X 63" long800 lbs.
Square/Rectangular Bar7.5" Square max X 63" long800 lbs.
Blocks80 lbs.
Shafts7.5" Dia. max. X 63" long800 lbs.

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