Inconel 738 Scrap / Inconel 738 Foundry Scrap / Inco 738 Scrap / Inconel 738 L/C

Product Description

Inconel 738 (IN738) and its low-carbon variant Inconel 738 LC (IN738LC) are precipitation-hardenable nickel-chromium-cobalt cast superalloys. Engineered for extreme hot corrosion resistance and high-temperature creep strength up to 982°C (1800°F), they are widely used in gas turbine blades, vanes, and integral wheels.

Chemical Composition Data (wt %)

No chemical symbols included; values represent standard nominal weight percentages for Inconel 738 LC (Low Carbon variant):

Mechanical & Physical Properties (Heat-Treated / Aged Condition)

• Density: 8.11 grams per cubic centimeter

• Melting Range: 1230 to 1315 degrees Celsius

• Ultimate Tensile Strength: 895 to 1100 Megapascals

• Yield Strength (0.2% Offset): 690 to 900 Megapascals

• Elongation at Break: 4 to 12 percent

• Hardness: 36 to 45 Rockwell C

• Maximum Service Temperature: 982 degrees Celsius (continuous exposure)

Scrap Classification & Re-Melting Guidelines

• VAC Grade Classification: High-purity Vacuum Induction Melting (VIM) / Vacuum Investment Casting scrap.

• Low-Carbon (L/C) Designation: The L/C grade features tighter control on carbon content (0.09–0.13%) to reduce grain boundary carbide precipitation and improve castability/structural integrity in thin-walled turbine castings.

• Foundry Forms: Investment casting gates, risers, cut blade/vane scrap, and clean solid structural cutoffs.

• Processing Requirements: Must be stripped completely of thermal barrier coatings (TBC), platinum-aluminide diffusion coatings, and ceramic shell contaminants before re-melting under strict vacuum conditions.