Nia - 99.0min.
Cu - 0.25 max.
Fe - 0.40 max.
Mn - 0.35 max.
C - 0.02 max.
Si - 0.35 max.
S - 0.01 max.
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aPlus Co.

Typical Mechanical Properties (Annealed)

Tensile Strength, psi •••••• 58,500
MPa •••••• 403
Yield Strength(0.2%Offset), psi •••••• 15,000
MPa •••••• 103
Elongation,% •••••• 50

Physical Constants and Thermal Properties

Density, Ib/in3 ••••••0.321
g/cm3 ••••••8.89
Melting Range, °F ••••••2615 – 2635
°C ••••••1435 – 1446
Specific Heat, Btu/lb •°F •••••• 0.109
J/kg • °C •••••• 456
Curie Temperature, °F •••••• 680
°C ••••••360
Permeability •••••• Ferromagnetic
Coefficient of Expansion, 
70 – 200°F, 10-6 in/in • °F ••••••7.3
21 – 93°C, μm/m • °C ••••••13.1
Thermal Conductivity, Btu • in/ft2•h•°F •••••• 550
W/m• °C •••••• 79.3
Electrical Resistivity, ohm• circ mil/ft •••••• 51
μΩ•m •••••• 0.085

Specifications and Designation

UNS N02201
BS 3072-3076 (NA12)
ASTM B 160-B 163,
B725, B730
ASME SB-160 - SB-163, Boiler
Code Sections III, VIII, IX
SAE AMS 5553
DIN 17740,17750 - 17754
Werkstoff Nr. 2.4061,
2.4068
VdTÜV 345