What does Inconel® mean?

Inconel^® is a trademark applied to a family of nickel-chromium alloys. The name is so well recognised that it is used generically to describe such alloys, even when they are produced by another manufacturer.

The most widely recognised Inconel alloys are Alloy 718 (Inconel 718, UNS N07718, 2.4668), Alloy 625 (Inconel 625, UNS N06625, 2.4856) and its higher-strength version Alloy 725 (Inconel 725, UNS N07725).

Grade	Trade name	UNS	Werkstoff
Alloy 718	Inconel 718	N07718	2.4668
Alloy 625	Inconel 625	N06625	2.4856
Alloy 725	Inconel 725	N07725	n/a

Frequently asked questions

Is Inconel an official material grade or a trademark?

Inconel is a trademark, not a formal grade designation, applied to a family of nickel-chromium alloys. It is so widely recognised that people often use it generically for similar alloys even when they are produced by a different manufacturer under a different brand name.

What are the most common Inconel alloys?

The most widely recognised are Alloy 718, Alloy 625 and the higher-strength Alloy 725. Each has its own UNS designation and is produced to the same underlying specification regardless of which mill manufactures it, so the Inconel name and the UNS number can be used interchangeably.

How does Alloy 725 differ from Alloy 625?

Alloy 725 is described as a higher-strength version of Alloy 625. Both are nickel-chromium alloys sold under the Inconel name, but Alloy 725 is developed to deliver greater strength than Alloy 625 while remaining within the same general alloy family.

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