Designated as UNS N08925, Incoloy 925 (also known as “Alloy 925”) is a precipitation-hardenable iron-nickel-chromium alloy with additions of molybdenum, copper, titanium and aluminum. The alloy has outstanding resistance to general corrosion, pitting, crevice corrosion, and stress-corrosion cracking in many aqueous environments, including those containing sulfides and chlorides. Incoloy 925 is used in various applications requiring a combination of high strength and corrosion resistance such as sour gas wells, oil production equipment, surface & down-hole piping components(flanges, valves, fasteners, fittings, shafts), etc.

1. Chemical Composition Requirement

The Chemical Composition of Incoloy 925, %
Nickel	42.0-46.0
Chromium	19.5-22.5
Iron	≥22.0
Molybdenum	2.5-3.5
Copper	1.5-3.0
Titanium	1.9-2.4
Alumium	0.1-0.5
Manganese	≤1.00
Silicon	≤0.50
Niobium	≤0.50
Carbon	≤0.03
Sulfur	≤0.30

2. Mechanical Properties of Incoloy 925

Tensile Strength, min.		Yield Strength, min.		Elongation, min.	Hardness, min.
Mpa	ksi	Mpa	ksi	%	HRC
1210	176	815	118	24	36.5

3. Physical Properties of Incoloy 925

Density	Melting Range		Specific Heat		Electrical Resistivity
g/cm3	°F	°C	J/kg.k	Btu/lb. °F	µΩ·m
8.08	2392-2490	1311-1366	435	0.104	1166

4. Product Forms and Standards

Product Form	Standard
Rod, bar & Wire	ASTM B805
Plate, sheet & strip	ASTM B872
Seamless pipe and tube	ASTM B983
Forging	ASTM B637

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