Limiting Chemical Composition, %

Ni - 30.0-35.0
Fe - 39.5 min.
Cr - 19.0-23.0
C - 0.10 max.
Mn - 1.50 max.
S - 0.015 max.
Si - 1.0 max.
Cu - 0.75 max.
Al - 0.15-0.60
Ti - 0.15-0.60

Typical Mechanical Properties (Annealed)

Physical Constants and Thermal Properties

Density, Ib/in3 •••••• 0.287
g/cm3 •••••• 7.94
Melting Range, °F •••••• 2475 – 2525
°C •••••• 1357 – 1385
Specific Heat, Btu/lb •°F •••••• 0.11
J/kg • °C •••••• 460
Curie Temperature, °F •••••• -175
°C •••••• -115
Permeability at 200 Oersted (15.9 kA/m) •••••• 1.014
Coefficient of Expansion, 70 – 200°F, 10-6 in/in • °F •••••• 7.9
20 – 100°C, μm/m • °C .... 14.4
Thermal Conductivity, Btu • in/ft2•h•°F •••••• 80
W/m• °C •••••• 11.5
Electrical Resistivity, ohm• circ mil/ft •••••• 595
μΩ•m •••••• 0.989

Specifications and Designation

UNS N08800
BS 3072- 3076 (NA 15)
ASTM B163, B407 - B409,
B514, B515, B564, B751
ASME SB-163, SB407-SB-409,
SB-564, Boiler Code
Sections I, III, VIII, IX
SAE AMS 5766, 5871
S.E.W. 470
Werkstoff Nr. 1.4876
VdTÜV 412
NACE MR-01-75
AFNOR Z5 NC 35-20

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