718 / 2.4668

Alloy 718 (2.4668) has a very good creep resistance. Besides the good short-and long-term mechanical properties - especially at low temperatures -, it has a high fatigue strength and offers a very good weldability in the application of arc and resistance welding processes. Alloy718 is not susceptible to weld cracking. Alloy 718 is an age-hardenable alloy. By heat treatment an increase in strength can be achieved.

Material Data Sheet

Material Designation	2.4668
Alloy	Alloy 718
EN Material Symbol	NiCr19Fe19Nb5Mo3
UNS	N07718
DIN EN	17744

Main fields of application of alloy 718

Alloy 718 was originally developed for the aerospace industry, and is now not only used in engines, gas turbines, or other components of the aircraft industry, but also in nuclear reactors, springs and high-strength bolts. In the oil and gas industry Alloy718 is also very popular because of its corrosion resistance and strength.

Chemical composition of alloy 718

C	Si	Mn	P	S	Cr	Mo	Ta
%	≤ %	≤ %	≤ %	≤ %	%	%	%
0-0.08	0-0.35	0.035	0-015	0-0.015	17.0-21.0	2.8-3.3	0-0.05

Nb	Ni	Al	Co	Cu	Fe	Ti	B
%	%	%	≤ %	≤ %	%	%	≤ %
4.75-5.5	50.0-55.0	0.2-0.8	0-1.0	0-0.3	rest	0.65-1.15	0-0.006

Characteristics of alloy 718

Temperature Range	High Temperature Range / Material for Wet Corrosion
Density	8.2 g/cm³
Melting Range	1260 - 1340°C
ISO-V notch impact toughness at -59°C	Across < 47 J/cm²
	lengthwise < 71 J/cm²

Filler metal (for welding with alloy 718)

Alloy 718 is recommended itself as filler material.

Delivery program

Sheets and plates 0.8mm < 80mm thickness

Bars / Billets dia. mm

12.7 - 101

With short delivery time:

plates or sheets, tubes, flanges, forged or die-cut rings and round blanks, elbows, T-fittings, reductions, screws, nuts or washers according to your request. According to your individual wishes, we are able to cut our material with our plasma- or water jet cutter. Our material is stocked in superformats of 2000x6000mm. Cut to size on request.

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Material Outlet by Hempel

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