Incoloy 800 / 800H / 800HT / 825 are nickel-iron-chromium alloys designed to provide excellent resistance to oxidation, carburization, and corrosion in high-temperature and chemically aggressive environments. These alloys offer superior strength, structural stability, and resistance to stress corrosion cracking, particularly in acidic and chloride-containing media. Incoloy grades maintain their mechanical properties over prolonged exposure to heat, making them suitable for long-term service. Incoloy 800 / 800H / 800HT / 825 are commonly used in petrochemical processing, heat exchangers, power generation systems, chemical reactors, furnace components, and offshore applications where high temperature strength and corrosion resistance are essential.
Other Types of Incoloy Alloy 800 / 800H / 800HT / 825 Bars
CHEMICAL COMPOSITION OF INCOLOY 800/800H/800HT/825 ROUND BAR
Grade
C
Mn
Si
S
Cu
Fe
Ni
Cr
Al
Ti
800
0.10 max
1.50 max
1.00 max
0.015 max
0.75 max
39.5 min
30–35
19–23
0.15–0.60
0.15–0.60
800H
0.05–0.10
1.50 max
1.00 max
0.015 max
0.75 max
39.5 min
30–35
19–23
0.15–0.60
0.15–0.60
800HT
0.06–0.10
1.50 max
1.00 max
0.015 max
0.75 max
39.5 min
30–35
19–23
0.15–0.60
0.15–0.60
825
0.05 max
1.00 max
0.50 max
0.03 max
1.5–3.0
22.0 min
38–46
19.5–23.5
0.20 max
0.6–1.2
MECHANICAL PROPERTIES OF INCOLOY ROUND BAR
Grade
Density (g/cm³)
Melting Point (°C)
Tensile Strength
Yield Strength
Elongation
800 / 800H / 800HT
7.94
1385 (2525°F)
520 MPa
205 MPa
30%
825
8.14
1400 (2550°F)
550 MPa
220 MPa
30%
💡 Practical Difference in Use
Use Incoloy 800 / 800H / 800HT / 825 Round Bars when: excellent resistance to high-temperature oxidation, carburization, and corrosion is required along with good mechanical strength. Incoloy alloys are nickel-iron-chromium based materials designed for long-term service in elevated temperature and corrosive environments.
→ Example: heat exchangers, furnace components, petrochemical processing equipment, power plants, and pollution control systems.
Bright Finished / Machined Incoloy Round Bars when: close dimensional tolerances, smooth surface finish, and precision fabrication are necessary. Bright drawn or machined Incoloy bars enhance machinability and ensure uniform performance.
→ Example: precision shafts, fasteners, valve components, threaded rods, and CNC-machined industrial parts.
