Nickel Hastelloy Alloy G30 UNS N06030

Hastelloy G-30 resists the formation of grain boundary precipitates in the heat-affected zone, making it suitable in the as-welded condition. Hastelloy G30 is basically the same as other high alloys in regard to formability. It is generally stiffer than an austenitic. Because of its good ductility, cold working is relatively easy and is the preferred method of forming. The alloy is easily weldable using Gas-Tungsten Arc, Gas Metal Arc and shielded Metal Arc. The welding characteristics are similar to those of G-3.

Chemical Composition, %

Mechanical Properties

Equivalent Grades

ASTM Specification

Composition Features of Hastelloy G30：

The composition features of Hastelloy G-30 are mainly as follows:

Nickel-based alloy: The matrix of Hastelloy G-30 is a nickel-based alloy, which is one of the main reasons for its good oxidation resistance and corrosion resistance.

Chromium content: Hastelloy G-30 contains a certain amount of chromium, which is one of the main reasons for its good corrosion resistance.

Containing molybdenum and tungsten elements: Hastelloy G-30 contains a moderate amount of molybdenum and tungsten elements, which add to its high-temperature strength and oxidation resistance.

A small amount of elements: Hastelloy G-30 also contains small amounts of carbon, nitrogen, silicon, magnesium, and other elements, which have a certain improvement effect on the properties of the alloy.

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