Incoloy 909 Round Bar

A nickel-iron-cobalt alloy with a silicon addition containing niobium and titanium for precipitation hardening. It is similar to INCOLOY alloys 903 and 907 because it has low thermal expansion and high strength. However, the silicon addition results in improved notch-rupture and tensile properties achieved with less-restrictive processing and significantly shorter heat treatments. Used for gas-turbine casings, shrouds, vanes and shafts.STANDARD PRODUCT FORMSRound bar, forging stock and hot-rolled profile.MAJOR SPECIFICATIONSUNS N19909SAE AMS 5884, 5892, 5893LIMITING CHEMICAL COMPOSITION, %Ni.......35.0 – 40.0Fe.......RemainderCo......12.0 – 16.0Nb..........4.3 – 5.2Ti............1.3 – 1.8Si.......0.25 – 0.50Al..........0.15 max.C...........0.06 max.PHYSICAL CONSTANTS AND THERMAL PROPERTIESDensity, Ib/in3.........................................................................0.296g/cm3......................................................................... 8.19Melting Range, °F...................................................2540 – 2610°C...................................................1395 – 1430Specific Heat, Btu/lb•°F.....................................................0.102J/kg•°C............................................................ 427Curie Temperature, °F................................................750 – 850°C................................................400 – 455Coefficient of Expansion, 77 – 800°F, 10-6 in/in •°F........4.325 – 427°C, μm/m •°C............. 7.7Thermal Conductivity, Btu • in/ft2•h•°F............................ 103W/m •°C........................................... 14.8Electrical Resistivity, ohm •circ mil/ft................................ 438μΩ•m...............................................0.728TYPICAL MECHANICAL PROPERTIES