Inconel 725, Alloy 725, Nickel 725
INCONEL alloy 725 (UNS N07725) is a nickel- chromium-molybdenum-niobium alloy that is highly resistant to corrosion and is age hardenable for extremely high strength. It has essentially the same corrosion resistance as INCONEL alloy 725, which is widely used in a broad range of severely corrosive environments. The strength of age-hardened INCONEL alloy 725 is of the order of twice that of annealed alloy 725. Because the strength of alloy 725 is developed by heat treatment, not by cold work, ductility and toughness remain high. Also, strength can be imparted to large or non-uniform sections that cannot be strengthened by cold work.
Available Product Forms:
Round bar and wire
Specifications
INCONEL alloy 725 is designated as UNS N07725.
Bar and wire: ASTM B 805, ASME Code Case 2217
Chemical Composition
Chromium…………………………………………………………19.0-22.5
Molybdenum…………………………………………………………7.0-9.5
Niobium……………………………………………………………..2.75-4.0
Titanium……………………………………………………………….1.0-1.7
Aluminum…………………………………………………………0.35 max.
Carbon…………………………………………………………….0.03 max.
Manganese………………………………………………………0.35 max.
Silicon……………………………………………………………..0.20 max.
Phosphorus…………………………………………………….0.015 max.
Sulfur……………………………………………………………..0.010 max.
Iron……………………………………………………………………Balance
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