INCOLOY Alloy 890 (UNS N08890)

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Applications

Introduction

INCOLOY alloy 890 offers high strength with excellent resistance to sulfidation, carburization, oxidation at temperatures up to 1200°C (2200°F). It is the latest addition to the INCOLOY family of heat-treatment alloys.

The following datasheet will discuss in detail about INCOLOY alloy 890.

Chemical Composition

The chemical composition INCOLOY alloy 890 is outlined in the following table.

Element Content (%)
Nickel, Ni 42.5
Iron, Fe 25.605 - 28.4
Chromium, Cr 25
Silicon, Si 1.8
Molybdenum, Mo 1.5
Manganese, Mn ≤1
Titanium, Ti ≤1
Copper, Cu ≤ 0.75
Niobium, Nb 0.4
Tantalum, Ta 0.2
Carbon, C 0.1
Aluminum, Al 0.1

Physical Properties

The following table shows the physical properties of INCOLOY alloy 890.

Properties Metric Imperial
Density 7.94 g/cm3 0.287 lb/in3
Melting point 1309-1383°C 2388-2521°F

Mechanical Properties

The mechanical properties of INCOLOY alloy 890 are displayed in the following table.

Properties Metric Imperial
Tensile strength 62 MPa 8990 psi
Yield strength 44 MPa 6380 psi
Elongation at break 46.50% 46.50%

Thermal Properties

The thermal properties of INCOLOY alloy 890 are given in the following table

Properties Metric Imperial
Thermal expansion co-efficient (@100°C/212°F) 14.47µm/m°C 8.039 µin/in°F

Other Designations

Other designations that are equivalent to INCOLOY alloy 890 include the following:

  • ASTM B 906
  • ASTM B 409
  • ASTM B 408
  • ASTM B 407

Applications

INCOLOY alloy 890 is mainly used for domestic and industrial sheathed heater applications and other high-temperature applications.

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