Nimonic 90 Sheet

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 FORMSSheet, strip, plate, round bar, flat bar, forging stock, wire and extruded section.MAJOR SPECIFICATIONSUNS N07090, BS HR2, HR202, HR402,,HR501 – HR503, Werkstoff Nr. 2.4632AECMA Pr EN 2295 – 2299, 2400, 2401,2669, 2670LIMITING CHEMICAL COMPOSITION, %LimitingNi .......RemainderCr ......18.0 – 21.0Co .....15.0 – 21.0Ti ...........2.0 – 3.0Al ...........1.0 – 2.0C ..........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 THERMALPROPERTIESDensity, Ib/in3........................................................................0.296g/cm3.........................................................................8.18Melting Range, °F...................................................2390 –2500°C ...................................................1310– 1370Specific Heat, Btu/lb • °F....................................................0.107J/kg • °C...........................................................446Permeability at 200 Oersted (15.9 kA/m).................1.0706Coefficient of Expansion, 68 – 212°F, 10-6in/in • °F........7.120 – 100°C, µm/m • °C .........12.7Thermal Conductivity, Btu • in/ft2 • h • °F..........................79.7W/m • °C..........................................11.5Electrical Resistivity, ohm • circ mil/ft...............................710µ Ω• m................................................1.18TYPICAL MECHANICAL PROPERTIES