INCOLOY 907-SHANGHAI KANGSHENG AVIATION MATERIALS TECHNOLOGY CO., LTD.

INCOLOY 907

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Product Description

A nickel-iron-cobalt alloy with additions of niobium and titanium for precipitation hardening. It has the low coefficient of expansion and high strength of INCOLOY alloy 903 but with improved notch-rupture properties at elevated temperatures. Used for components of gas turbines including seals, shafts and casings.

STANDARD PRODUCT FORMS

Round bar and forging stock.

MAJOR SPECIFICATIONS

UNS N19907

LIMITING CHEMICAL COMPOSITION, %

Ni.......35.0 – 40.0
Fe.......Remainder
Cu.....12.0 – 16.0
Nb..........4.3 – 5.2
Ti............1.3 – 1.8
Al............ 0.2 max.
Si.......0.07 – 0.35

PHYSICAL CONSTANTS AND THERMAL PROPERTIES

Density, Ib/in³.........................................................................0.301
g/cm³......................................................................... 8.33
Melting Range, °F....................................................2440 – 2550
°C....................................................1335 – 1400
Specific Heat, Btu/lb•°F.....................................................0.103
J/kg•°C............................................................ 431
Curie Temperature, °F................................................750 – 850
°C................................................400 – 455
Coefficient of Expansion, 77 – 800°F, 10^-6 in/in •°F........4.3
25 – 427°C, μm/m •°C............. 7.7
Thermal Conductivity, Btu • in/ft²•h•°F............................ 103
W/m • °C.......................................... 14.8
Electrical Resistivity, ohm •circ mil/ft................................ 419
μΩ•m...............................................0.697

TYPICAL MECHANICAL PROPERTIES