Alloy 718

It has good strength and ductility in the temperature range from minus to more than 750 degrees Celsius. It has satisfactory corrosion resistance and fatigue resistance to various corrosive chemicals. It is non-magnetic and spark resistant, and has excellent stress corrosion resistance. The ability of cracking, chloride stress cracking and sulfide stress cracking, has high fatigue strength in seawater.

Alloy 718 is typically used in:

◆ Oil and gas industry
◆ Power generation industry equipment
◆ Aerospace
◆ Nuclear Power Plant
◆ Engineering industry applications from 750 degrees Celsius to low temperature range

Material composition/Composition:
Ni Nickel (plus Cobalt) ▏50%-55%
Cu Copper ▏ 0.3% max
Fe lron ▏ 10.42% min
Cr Chromium ▏ 17% -21%
C Carbon ▏0.08% max
Si Silicon ▏ 0.35% max
S Sulfur ▏ 0.015% max
Mn Manganese ▏ 0.35% max
P Phosphorus ▏0.015% max
Ti Titanium ▏ 0.65% -1.15%
AI Aluminum ▏ 0.2%-0.8%
Mo Molybdenum ▏ 2.8%-3.3%
Co Cobalt ▏1% max
Nb (+Ta) Niobium ▏ 4.7% -5.5%
ASTM codes:
Forgings/Flanges:B637
Plate:B670

Bar/Billet:B637
Equivalents:
Trademark: Inconel 718
UNS: N07718
Werkstoff nr. 2.4668

Products Available:
Seamless Tubes, Welded Pipes.