A nickel-chromium alloy with good mechanical properties and oxidation resistance at high temperatures. Used for sheet-metal fabrications in gas-turbine engines, components of industrial furnaces, heat-treating equipment and fixtures, and nuclear engineering.

STANDARD PRODUCT FORMS

Sheet, strip, plate, round bar, forging stock, wire and
extruded section.

MAJOR SPECIFICATIONS

UNS N06075
BS HR5, HR203, HR403, HR504
DIN 17742, 17750 – 17752
Werkstoff Nr. 2.4951, 2.4630
ISO 6207, 6208, 9723-9725
AECMA Pr EN 2293, 2294,
2302, 2306 – 2308,
2402, 2411

LIMITING CHEMICAL COMPOSITION, %

Ni........Remainder
Cr.......18.0 – 21.0
Ti............0.2 – 0.6
C........0.08 – 0.15
Si............ 1.0 max.
Cu.......... 0.5 max.
Fe........... 5.0 max.
Mn.......... 1.0 max.

PHYSICAL CONSTANTS AND THERMAL PROPERTIES

Density, Ib/in³.........................................................................0.302
g/cm³......................................................................... 8.37
Melting Range, °F...................................................2440 – 2520
°C...................................................1340 – 1380
Specific Heat, Btu/lb•°F.....................................................0.110
J/kg•°C............................................................ 461
Coefficient of Expansion, 68 – 212°F 10^-6 in/in •°F.........6.1
20 – 100°C, μm/m •°C.......... 11.0
Thermal Conductivity, Btu • in/ft²•h•°F........................... 81.1
W/m •°C........................................... 11.7
Electrical Resistivity, ohm •circ mil/ft................................ 656
μΩ•m................................................. 1.09

TYPICAL MECHANICAL PROPERTIES

NIMONIC 80A

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