Chemistry:Supertherm

Supertherm is a registered trademark of Duraloy Technologies, Inc. Supertherm is a cast nickel-chromium-iron alloy strengthened with cobalt and tungsten. Supertherm alloy is used in high temperature industrial furnace applications up to 2300 °F.

Nominal Composition

Element	C	Si	Mn	Cr	Ni	W	Co
	0.50	1.5	1.0	25	35	5	15

Properties

Precise control of Supertherm’s unique composition and its low residual element content results in excellent oxidation resistance and high temperature strength to 2300 °F (1260 °C). Carburization resistance is excellent. Supertherm has good thermal fatigue resistance above 1800 °F (980 °C).

Uses

Depending on precise stress and environmental conditions, Supertherm can be used in severe applications involving service temperatures up to 2300 °F. Supertherm is manufactured by the foundry casting process and is readily weldable into assemblies using most welding processes, and can be machined without appreciable difficulty. The low coefficient of thermal expansion makes Supertherm an excellent choice for SPF platens and tooling where dimensional stability is important.

Typical applications include: High temperature press platens used in superplastic forming of titanium, high temperature industrial furnace hardware and petrochemical furnace tube supports.