Incoloy 803 Rods: Superior High-Temperature Performance for Demanding Applications

Incoloy 803 rods are advanced iron-nickel-chromium alloys engineered for superior performance in high-temperature and corrosive environments. With elevated nickel and chromium content, these rods offer exceptional resistance to oxidation, sulfidation, and carburization, making them ideal for demanding applications in petrochemical, chemical, and thermal processing industries.​

Chemical Composition

Incoloy 803 rods are composed of the following elements:​

Balance refers to the remaining composition, primarily iron.

Mechanical Properties

The mechanical properties of Incoloy 803 rods are as follows:​

Physical Properties

Key physical properties include:​

• Density: 7.86 g/cm³ (0.284 lb/in³)​

• Melting Range: 1365°C – 1400°C (2490°F – 2555°F)​

• Young’s Modulus (at 20°C): 195 GPa (28,300 ksi)​

• Shear Modulus (at 20°C): 73.8 GPa (10,700 ksi)​

• Poisson’s Ratio (at 20°C): 0.32​

Applications

Incoloy 803 rods are widely used in:​

• Petrochemical processing​

• Chemical processing​

• Thermal processing

• Manufacture of internally finned pyrolysis tubing in high-severity ethylene furnaces​

Frequently Asked Questions

1. What industries benefit from Incoloy 803 rods?

   • Industries such as petrochemical, chemical, and thermal processing utilize Incoloy 803 rods for their exceptional high-temperature corrosion resistance.​

2. How does Incoloy 803 compare to other Incoloy alloys?

   • Incoloy 803 offers higher nickel and chromium content than alloys like 800H and 800HT, providing enhanced resistance to oxidation, sulfidation, and carburization.​

3. What are the welding considerations for Incoloy 803 rods?

   • Welding should be performed using compatible consumables, such as INCONEL Welding Electrode 117 and INCONEL Filler Metal 617, to maintain the alloy's properties.