UNS N08890 Incoloy 890 Rod Superior Strength And Corrosion Resistance

UNS N08890 Incoloy 890 Rod: Superior Strength and Corrosion Resistance

Incoloy 890, designated as UNS N08890, is a high-performance nickel-chromium-iron alloy known for its exceptional strength and resistance to oxidation, carburization, and sulfidation at temperatures up to 2200°F (1200°C). Its unique composition and properties make it suitable for various demanding applications.

Chemical Composition

The chemical composition of Incoloy 890 is as follows:​

Mechanical Properties

Incoloy 890 exhibits the following mechanical properties:​

Physical Properties

Key physical properties of Incoloy 890 include:​

• Density: 7.94 g/cm³ (0.287 lb/in³)​

• Melting Point: 1309-1383°C (2388-2521°F)​

Applications

Incoloy 890 is widely used in applications requiring high-temperature strength and resistance to corrosive environments, such as:​

• Heat exchangers​

• Petrochemical processing vessels​

• Power generation components​

• Turbine blades​

• Combustion chamber components​

Standards and Specifications

Incoloy 890 conforms to several industry standards, including:​

• ASTM B408: Standard Specification for Incoloy 890 Bars and Rods​

• ASTM B407: Standard Specification for Incoloy 890 Tubing​

• ASTM B409: Standard Specification for Incoloy 890 Plate, Sheet, and Strip​

FAQs

Q1: What is the maximum operating temperature for Incoloy 890?

Incoloy 890 maintains excellent mechanical properties and resistance to oxidation up to temperatures of 2200°F (1200°C).​

Q2: How does Incoloy 890 compare to other Incoloy alloys like 803 and 800HT?

Incoloy 890 offers superior resistance to carburizing environments compared to alloy 803 and slightly enhanced properties over alloy 800HT, especially at elevated temperatures. 

Q3: Is Incoloy 890 weldable?

Yes, Incoloy 890 can be welded using standard welding techniques suitable for nickel-based alloys.