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Nickel Alloy 725 / Inconel 725®


Technical Data Sheet

 

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

Alloy 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. Alloy 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. Alloy 725 is used for hangers, landing nipples and high strength fasteners in marine applications.

Typical 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

Availability
Alloy 725 is available in Bar, Round Bar, Flat Bar, Forging Stock. Contact Sales for further availability.

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)

Services
At Aircraft Materials we specialise in the rapid turn-around of orders, with most stock items ready for shipping out the same day to anywhere in the world. For time-critical orders, such as AOGs use our AOG service desk (aog@aircraftmaterials.com), the team are dedicated to processing and dispatching orders on the same day, even for cutting orders on bar and sheet products.

Our expertise in global logistics enables us to source material from anywhere in the world in a matter of days and provide fast shipping solutions to all our customers, whichever country they are in. We use a range of transport partners to ship overnight within the UK and Europe, and offer a full range of logistics solutions from priority express services to more cost-effective economy shipments all around the globe. To find out more about our services click here.

Disclaimer
Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.