Alloy 718 / 2.4668

Alternative and trade names
Alloy 718
Want to keep this datasheet? Save it now in your required format

Description

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. Alloy 718 is not susceptible to weld cracking. Alloy 718 is an age-hardenable alloy. By heat treatment an increase in strength can be achieved.

Related Standards

Equivalent Materials

This material data has been provided by Hempel Special Metals.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Ashby charts

Properties

General

PropertyTemperatureValue

Density

23.0 °C

8.2 g/cm³

Show Supplier Material materials with Density of 8.2 g/cm³

Mechanical

PropertyTemperatureValueComment

Impact strength, Charpy notched

-59.0 °C

710 kJ/m²

Show Supplier Material materials with Impact strength, Charpy notched of 710 kJ/m²

max.

Thermal

PropertyValue

Melting point

1260 - 1340 °C

Show Supplier Material materials with Melting point of 1260 - 1340 °C

Chemical properties

PropertyValueComment

Aluminium

0.2 - 0.8 %

Show Supplier Material materials with Aluminium of 0.2 - 0.8 %

Boron

6E-3 %

Show Supplier Material materials with Boron of 6E-3 %

max.

Carbon

0.08 %

Show Supplier Material materials with Carbon of 0.08 %

max.

Chromium

17 - 21 %

Show Supplier Material materials with Chromium of 17 - 21 %

Cobalt

1 %

Show Supplier Material materials with Cobalt of 1 %

max.

Copper

0.3 %

Show Supplier Material materials with Copper of 0.3 %

max.

Iron

Balance

Manganese

0.04 %

Show Supplier Material materials with Manganese of 0.04 %

max.

Molybdenum

2.8 - 3.3 %

Show Supplier Material materials with Molybdenum of 2.8 - 3.3 %

Nickel

50 - 55 %

Show Supplier Material materials with Nickel of 50 - 55 %

Niobium

4.75 - 5.5 %

Show Supplier Material materials with Niobium of 4.75 - 5.5 %

Phosphorus

0.02 %

Show Supplier Material materials with Phosphorus of 0.02 %

max.

Silicon

0.35 %

Show Supplier Material materials with Silicon of 0.35 %

max.

Sulfur

0.015 %

Show Supplier Material materials with Sulfur of 0.015 %

max.

Tantalum

0.05 %

Show Supplier Material materials with Tantalum of 0.05 %

max.

Titanium

0.65 - 1.15 %

Show Supplier Material materials with Titanium of 0.65 - 1.15 %

Technological properties

Property
Application areas

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.

Welding

Alloy 718 is recommended itself as filler material.