


Inconel 740H (UNS N07740)
Category: INCONEL
Overview
Inconel 740 alloy is a nickel-based superalloy that can maintain good mechanical properties and oxidation resistance in high-temperature environments. The alloy is also widely used in aerospace, energy, and chemical industries, especially in the manufacture of high-temperature components and structures. Its physical properties include excellent resistance to high-temperature corrosion, good oxidation resistance, and good resistance to coal ash corrosion.
Chemical Composition
Cr | Co | Al | Ti | Nb | Fe | C | Mn | Mo | Si | Cu | P | S | B | Ni | |
MIN | 23.5 | 15 | 0.2 | 0.5 | 0.5 | 0.005 | |||||||||
MAX | 25.5 | 22 | 2.0 | 2.5 | 2.5 | 3.0 | 0.08 | 1.0 | 2.0 | 1.0 | 0.5 | 0.03 | 0.03 | 0.006 | 37.9 |
Physical Properties
Density | 8.05g/cm³ |
Melting Range | 1288-1362℃ |
Available Products and Specifications
Seamless Pipe & Tube | ASTM B983 |
Filler Metal | AWS A5.14 ERNiCrMo-15 |
Features
• Excellent resistance to chloride pitting and crevice corrosion cracking
• Immune to Chloride ion stress corrosion
• Maintains high strength at elevated temperatures
• Resistant to sea water, in both flowing and stagnant condition
• Heat resistant
Applications
• Marine engineering
• Furnaces & gas turbines
• Chemical processing plants
• Boiler & pressure vessels
• Nuclear power plants
Keywords: Inconel 740H (UNS N07740)
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