A-1 Wire Tech, Inc.
INCOLOY® ALLOY A-286

A nickel-iron-chromium alloy with additions of copper and molybdenum. It also contains niobium for stabilization against sensitization and resultant intergranular corrosion. The alloy has excellent resistance to general corrosion, pitting,and crevice corrosion in chemicals containing chlorides and sulfuric, phosphoric, and nitric acids. Used for tanks, piping, heat exchangers, pumps, valves, and other process equipment. Standard product forms are round, flats, pipe, tube, plate, sheet, strip, and wire.

Typical Mechanical Properties
(Precipitation Hardened)

Limiting Chemical Composition, %

Ni - 24.0 – 27.0
Cr - 13.5 – 16.0
Fe - Balance
Ti - 1.90 – 2.35
Mo - 1.0 – 1.5
V - 0.10 – 0.50
C - 0.08 max.
Mn - 2.0 max.
Si - 1.0 max.
Al - 0.35 max.
S - 0.030 max.
B - 0.001 – 0.01

Physical Constants and Thermal Properties

Density, Ib/in3 (g/m3) •••••• 0.287 (7.94)
Melting Range, °F (°C) •••••• 2500 – 2600 (1370 – 1430)
Specific Heat, Btu/lb •°F (J/kg • °C) •••••• 0.100 (419)
Permeability at 200 Oersted (15.9 kA/m) •••••• 1.007
Coefficient of Expansion, 10-6 in/in • °F (μm/m • °C)
70 – 200°F (21 – 93 °C) •••••• 9.09 (16.4)
70 – 800°F (21 – 427°C) •••••• 9.61 (17.3)
70 – 1400°F (21 – 760°C) •••••• 9.67 (17.4)
Thermal ConductivityA, Btu • in/ft2 • °F (W/m • °C) 88 (12.7)
Electrical ResistivityA, ohm • circ mil/ft •••••• 547
μΩ•m •••••• 0.910
Young's ModulusA, 106 psi (GPa) •••••• 29.1 (201)
HardnessA, HRC •••••• 31

ARoom temperature, as aged.

Specifications and Designation

UNS S66286
ASTM A 453, A 638
ASME SA-453, SA-638
SAE AMS 5525, 5726,
5731, 5732, 5734, 5737,
5858, 5895, 7235
BS HR 51, HR 52, HR 650
AECMA Pr EN 2119,
2171 – 2175, 2303,
2304, 2398, 2399,
2417, 3510


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