Introduction to high temperature alloys

Introduction to high temperature alloys


High temperature alloys or high performance alloys are alloys that exhibit excellent mechanical strength and creep resistance at high temperatures, good surface stability, and resistance to corrosion and oxidation. They usually have an austenite-centered cubic crystal structure containing nickel, cobalt or nickel-iron alloy elements. The development of superalloys has been driven primarily by the aerospace and power industries.

Introduction to high temperature alloys

Corrosion-resistant superalloys are widely used in extreme environments where extremely high heat and corrosion resistance are critical to the integrity of the finished product. These high-temperature alloys are widely used in chemical and petrochemical processing, power plants, and the oil and gas industry.

Many industrial nickel-based superalloys contain alloying elements, including chromium (Cr), aluminum (Al), titanium (Ti), molybdenum (Mo), tungsten (W), niobium (Nb), tantalum (Ta) and cobalt (cobalt). ).

Superalloys, also known as high-performance alloys, have become the steels of choice for corrosion resistance and versatility.

Availability of high temperature alloys

Blue Cast supplies most high-temperature alloys in the form of plates, rods, tubes and tubes (welded and seamless), wire and fittings, and 3D metal powders.

Which nickel-based alloys are high-temperature alloys?

Alloy C-276, other common trade name Hastelloy® C-276

Alloy X, other common trade names Hastelloy® X, Inconel® HX

Alloy 718, other common trade name Inconel® 718

Alloy 20

What applications are superalloys used for?


Turbine Blades and Jet/Rocket Engines

Marine industry


Chemical processing industry

nuclear reactor

Heat exchange tube

Industrial gas turbine

What are the characteristics of high temperature alloys?

Excellent mechanical strength and creep resistance at high temperatures

good surface stability

Resistant to corrosion and oxidation

Little knowledge about high temperature alloys

The term "superalloy" was first used shortly after World War II to describe a group of alloys developed for turbochargers and aircraft turbine engines where high performance was required at high temperatures.