Incoloy 890

Aurico Alloys LLP supplies Incoloy 890 as sheet, plate and round bar, from Mumbai, India, with EN 10204 3.1 mill test certificates.

Incoloy® 890 (UNS N08890) is the newest of the INCOLOY heat-resistant alloys: an iron–nickel–chromium composition at nickel 42.5% and chromium 25% nominal, resisting oxidation, carburisation and sulphidation to 1200 °C. Special Metals describes it as carrying alloy 803's high chromium content with silicon, molybdenum and niobium added on top, and those three additions are what separate it.

Key Properties

Silicon 1.8%, molybdenum 1.5% and niobium 0.4%, nominal — the additions Special Metals names as the enhancement over alloy 803, whose high chromium it shares.
Nickel 42.5% and chromium 25% nominal on an iron balance, with tantalum 0.2%.
Oxidation, carburisation and sulphidation resistance to 1200 °C, with high strength alongside — the combination the grade was developed for.
Special Metals publishes a nominal composition for this alloy, not specification limits; titanium, manganese and copper are the cells given as maxima.

Applications

Ethylene and hydrocarbon cracking furnace hardware
Radiant tubes and furnace internals
Carburising and sulphidising process equipment
High-temperature process piping

Available Forms

Equivalent Grades & Standards

Equivalent designations and physical constants for Incoloy 890
Property	Value
UNS number	N08890
Werkstoff / EN number	—
EN designation	—
Density	7.94 g/cm³
Melting range	1309-1383 °C

Identifiers and physical constants for Incoloy 890. A dash means no such designation is published for this grade.

Specifications by Product Form

Incoloy 890 (N08890) is supplied to a different standard in each form. Quote the one that matches the product you are ordering.

Product form	Specification
Plate, sheet and strip	ASTM B409 / B906
Rod and bar	ASTM B408
Pipe and tube	ASTM B407