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Inconel 725 Technical Data Sheet

Inconel 725 Chemical Composition Limits
Weight% Ni Cr Mo Nb Ti Al C Mn Si P S Fe
Alloy 725 55.0-59.0 19.0 -22.5 7.0-9.5 2.75-4.0 1.0-1.7 0.35 max 0.03 max 0.35 max 0.20 max 0.015 max 0.010 max Rem

Inconel 725 (UNS N07725) is a nickel-chromium-molybdenum-niobium alloy that is highly resistant to corrosion and has been age hardened for extremely high strength twice that of annealed alloy 625. Inconel 725 strength is developed by heat treatment rather than by cold work this also enables strength to be imparted to large non-uniform sections that cannot be strengthened by cold works. Inconel 725 is used for hangers, landing nipples and high strength fasteners in marine applications.

Inconel 725 Mechanical Properties

Material Form and Condition Yield Strength (0.2% Offset) Tensile Strength Elongation % Hardness, Rc
ksi MPa ksi MPa
Alloy 725 round Annealed 62.0 427 124.0 855 57 5
Alloy 725 round Age Hardened 133.0 917 180.0 1241 30 36
Transverse Specimens from hot-finished rounds of 4.0 to 7.5 in (102 to 190mm) diameter

Inconel 725 Specifications
Bar and Wire ASTM B 805, ASME Code Case 2217
Bar and Forging Stock SMC Specification HA91, ASME Code Case 2217
UNS N07725
FMC Spec M40504
NACE MR-0175/ ISO 15156
Inconel 725 (trademark)

Alloy Nickel Alloy 706 Inconel 706
Alloy Nickel Alloy 718 Inconel 718
Alloy 722
Inconel 722
UNS N07722
AMS 5541 Sheet and Strip
AMS 5714 Bar and Forgings
UNS N07718
Werkstoff Nr 2.4668
AMS 5596 Sheet, Strip and Plate
FMC Spec M40110, M40118, M40125, M40902, M40908, M40909, M40910
NACE MR-0175/ISO 15156
UNS N09706
AMS 5701
AMS 5702
AMS 5703
Inconel 706 (tradename)

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