Inconel 903 Scrap, Inconel 903 Foundry Scrap, Inco 903 Scrap

Product Description

Incoloy / Inconel 903 (UNS N19903) is an age-hardenable nickel-iron-cobalt superalloy designed for high strength combined with a low, constant coefficient of thermal expansion up to 425°C. Unlike most superalloys, chromium is intentionally excluded to maintain low thermal expansion.

Chemical Composition Data (wt %)

No chemical symbols included; values represent standard nominal weight percentages:

Mechanical Properties (Age-Hardened Condition)

• Density: 8.25 grams per cubic centimeter

• Melting Range: 1318 to 1393 degrees Celsius

• Ultimate Tensile Strength: 1310 Megapascals

• Yield Strength (0.2% Offset): 1103 Megapascals

• Elongation at Break: 14 percent

• Reduction of Area: 40 percent

• Coefficient of Thermal Expansion (21°C to 425°C): 7.2 micrometers per meter per degree Celsius

• Maximum Service Temperature: 650 degrees Celsius

Scrap Classification & Re-Melting Guidelines

• Scrap Grade Classification: Vacuum Induction Melting (VIM) / Vacuum Arc Remelting (VAR) quality low-expansion alloy scrap.

• Foundry Forms: Solid cropped ring forgings, turbine shafts, outer cases, and clean processed solids/turnings.

• Quality Requirements: Must be sorted strictly away from chromium-bearing nickel alloys (such as Inconel 718 or 939) to preserve the zero-chromium low-expansion chemistry profile. Free of thermal barrier coatings, plating, oil, slag, and non-metallic inclusions.