Limiting Chemical Composition, %

Nia - 63.0 min.
Cu - 27.0-33.0
Al - 2.30-3.15
Ti - 0.35-0.85
Fe - 2.0 max.
C - 0.25 max.
Mn - 1.5 max.
S - 0.01max.
Si - 0.5 max.
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aPlus Co.

Typical Mechanical Properties (Annealed)

Tensile Strength, psi •••••• 160,000
MPa •••••• 1,100
Yield Strength(0.2%Offset), psi •••••• 115,000
MPa •••••• 790
Elongation,% •••••• 20

Physical Constants and Thermal Properties

Density, Ib/in3 •••••• 0.305
g/cm3 •••••• 8.44
Melting Range, °F •••••• 2400 – 2460
°C •••••• 1315 – 1350
Specific Heat, Btu/lb •°F •••••• 0.100
J/kg • °C •••••• 419
Curie Temperature, °F •••••• -150
°C •••••• -65
Permeability at 200 Oersted (15.9 kA/m) •••••• 1.002
Coefficient of Expansion,
70 – 200°F, 10-6 in/in • °F •••••• 7.6
21 – 93°C, μm/m • °C •••••• 13.7
Thermal Conductivity, Btu • in/ft2•h•°F •••••• 121
W/m• °C •••••• 17.5
Electrical Resistivity, ohm• circ mil/ft •••••• 370
μΩ•m •••••• 0.615

Specifications and Designation

UNS N05500
BS 3072-3076 (NA18)
ASME Boiler Code Section VIII
SAE AMS 4676
MIL-N-24549 DIN 17743, 17752, 17754
Werkstoff Nr. 2.4375
QQ-N-286
NACE MR-01-75

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All rights reserved.