NIMONIC 90-SHANGHAI KANGSHENG AVIATION MATERIALS TECHNOLOGY CO., LTD.

NIMONIC 90

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Product Description

A precipitation-hardenable nickel-chromiumcobalt alloy having high stress-rupture strength and creep resistance at temperatures to about 1700°F (920°C). The alloy also has good resistance to high-temperature corrosion and oxidation. Used for blades and discs in gas turbines, hot-working tools and springs.

STANDARD PRODUCT FORMS

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

MAJOR SPECIFICATIONS

UNS N07090, BS HR2, HR202, HR402,, HR501 – HR503, Werkstoff Nr. 2.4632
AECMA Pr EN 2295 – 2299, 2400, 2401, 2669, 2670

LIMITING CHEMICAL COMPOSITION, %

Limiting
Ni .......Remainder
Cr ......18.0 – 21.0
Co .....15.0 – 21.0
Ti ...........2.0 – 3.0
Al ...........1.0 – 2.0
C ..........0.13 max.
Si ...........1.0 max.
Cu..........0.2 max.
Fe ..........1.5 max.
Mn .........1.0 max.
B ..........0.02 max.
S .......0.015 max.
Zr .........0.15 max.

PHYSICAL CONSTANTS AND THERMAL PROPERTIES

Density, Ib/in³ ........................................................................0.296
g/cm³ .........................................................................8.18
Melting Range, °F ...................................................2390 – 2500
°C ...................................................1310 – 1370
Specific Heat, Btu/lb • °F ....................................................0.107
J/kg • °C ...........................................................446
Permeability at 200 Oersted (15.9 kA/m) .................1.0706
Coefficient of Expansion, 68 – 212°F, 10^-6 in/in • °F........7.1
20 – 100°C, µm/m • °C .........12.7
Thermal Conductivity, Btu • in/ft² • h • °F ..........................79.7
W/m • °C..........................................11.5
Electrical Resistivity, ohm • circ mil/ft ...............................710
µ Ω• m ................................................1.18

TYPICAL MECHANICAL PROPERTIES