Inconel 725 round bar, Alloy 725 tube, Inconel alloy 725 plate sheet supplier

Short Description:

Alloy 725 / Inconel 725 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 625, which is widely used in a broad range of severely corrosive environments. The strength of age-hardened Alloy 725 is of the order of 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.

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Applications

Hangers, landing nipples and high strength fasteners in marine applications.

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

Chemical Composition

Elements	Content (%)
Nickel, Ni	55 - 59
Chromium, Cr	19 - 22.5
Iron, Fe	9
Molybdenum, Mo	7 - 9.50
Niobium, Nb (Columbium, Cb)	2.75 - 4
Titanium, Ti	1 - 1.70
Aluminum, Al	0.35
Manganese, Mn	0.35
Silicon, Si	0.20
Carbon, C	0.030
Phosphorous, P	0.015
Sulfur, S	0.010

Mechanical properties

	Condition	Yield Strength (0.2% Offset)		Tensile Strength		Elongation %	Hardness, Rc
	Condition	ksi	MPa	ksi	MPa	Elongation %	Hardness, Rc
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