Incoloy Alloy 803 Forgings by MTS Forge

INCOLOY is a family of high-performance nickel-iron-chromium alloys engineered for superior resistance to oxidation, carburization, and corrosion at elevated temperatures. These alloys are widely used in heat-treating equipment, chemical processing, and power generation applications where standard stainless steels would fail. Incoloy Alloy 803, specifically, offers enhanced high-temperature strength and resistance to aggressive atmospheres, making it a preferred material for furnace components and industrial process equipment.

SS316 is an austenitic stainless steel offering good corrosion resistance in aqueous environments at moderate temperatures, with iron as its primary base metal. INCOLOY alloys, by contrast, are nickel-iron-chromium based and are engineered specifically for high-temperature service, offering far superior resistance to oxidation, carburization, and thermal cycling. Incoloy Alloy 803 significantly outperforms SS316 in temperatures above 1000°F, making it the preferred choice for furnaces, chemical reactors, and power generation components.

Incoloy Alloy 803 forgings are used across chemical processing, power generation, industrial heat treating, commercial nuclear, aerospace, and defense industries. Its exceptional resistance to oxidizing and carburizing atmospheres at high temperatures makes it ideal for furnace components, radiant tubes, heat exchangers, flanges, and piping systems operating under extreme thermal and chemical stress conditions.

MTS Forge produces closed die forgings, upset forgings, rings, cylinders, flanges up to 14 inches, contour forgings, manways, and fully custom forgings in Incoloy Alloy 803. Maximum forging diameter for rings and cylinders is 26 inches with a weight capacity of up to 1,500 pounds per piece. In-house heat treatment and rough machining are also available for complete, specification-ready delivery.

Yes. MTS Forge performs in-house normalizing heat treatment at its Coatesville, PA facility. For Incoloy Alloy 803 forgings, normalizing refines the grain structure, relieves internal stresses introduced during forging, and produces a uniform microstructure with consistent tensile strength, toughness, and ductility — critical properties for components operating in high-temperature and chemically aggressive service environments.

MTS Forge operates under a comprehensive Quality Assurance Program that includes certifications for Mil I 45208, NCA 3800, and Mil Q9858. These standards govern inspection, traceability, and quality control across all forged products, including Incoloy Alloy 803 components. This ensures full material traceability and compliance with military, nuclear, and aerospace procurement requirements from raw material to finished forging.

Incoloy Alloy 803 is a premium high-performance alloy, so minimizing material waste is critical to cost control. Closed die forging produces near-net shapes that require significantly less material input than machining from solid bar stock. This approach lowers raw material consumption, reduces machining time and tooling wear, and shortens lead times — delivering lower unit costs while maintaining the alloy's full mechanical and corrosion-resistant properties.

Lead times for Incoloy Alloy 803 forgings vary based on component complexity, quantity, and material availability. MTS Forge works directly with manufacturers and procurement teams to review specifications, confirm material sourcing, and provide realistic production schedules. Customers are encouraged to contact MTS Forge's team at the Coatesville, PA facility directly to discuss project requirements, obtain a quote, and establish a delivery timeline suited to their production schedule.