Incoloy 907(UNS N19907)

1.Incoloy 907 INTRODUCTION

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.

2.Incoloy 907 STANDARD  PRODUCT FORMS

Round bar and forging stock.

3.Incoloy 907 MAJOR  SPECIFICATIONS

UNS N19907

4.Incoloy 907 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

5..Incoloy 907 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

6..Incoloy 907 TYPICAL MECHANICAL  PROPERTIES