A-1 Wire Tech, Inc.
INCONEL® ALLOY 625LCF®

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

Limiting Chemical Composition, %

Ni - 58.0 min.
Cr - 20.0 – 23.0
Mo - 8.0 – 10.0
Nba - 3.15 – 4.15
Fe - 5.0 max.
C - 0.03 max.
Si - 0.15 max.
N - 0.02 max.
Mn - 0.50 max.
S - 0.015 max.
Al - 0.40 max.
Ti - 0.40 max.
P - 0.015 max.
aPlus Ta. Co - 1.0 max.

Typical Mechanical Properties (Annealed)

Tensile Strength, ksi •••••• 130
MPa ••••••. 894
Yield Strength (0.2% Offset), ksi •••••• 68
MPa •••••• 469
Elongation, % •••••• 50

Physical Constants and Thermal Properties

Density, Ib/in3 •••••• 0.305 /
g/cm3 •••••• 8.44
Melting Range, °F •••••• 2350 – 2460
°C •••••• 1290 – 1350
Specific Heat, Btu/lb •°F •••••• 0.098
J/kg • °C•••••• 410
Curie Temperature, °F •••••• <-320
°C •••••• <-196
Permeability at 200 Oersted (15.9 kA/m) •••••• 1.0006
Coefficient of Expansion,
70 – 200°F, 10-6 in/in • °F•••••• 7.1
20 – 100°C, μm/m • °C .... 12.8
Thermal Conductivity, Btu • in/ft2•h•°F •••••• 68
W/m• °C •••••• 9.7
Electrical Resistivity, ohm• circ mil/ft •••••• 776
μΩ•m •••••• 1.29

Specifications and Designation

UNS N06625, N06626
ASTM B 366, B 443, B 704,
B 705, B 751, B 775
ASME SB-366, SB-443,
SB-704, SB-705,
SB-751, SB-775
SAE AMS 5879
ASME Code Case 2276

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