We could produce UNS R30783 Forged forging Round Bars Rods Square rectangular rectangle turbine blades Flat Bars,UNS R30783 Forged Forging Steel Hollow Bars Forged Forging Sleeves Bushes Bushing Pipes Piping tubes tubings barrels Casing Cases Shells cylinders hubs housings,UNS R30783 Forged Forging Rings Seamless Rolled Steel Rings,UNS R30783 forged forging Turbine Seals rings,Turbine casings, compressors Turbine shrouds,UNS R30783 Forged Forging Steel Blocks Discs Disks Plates ,UNS R30783 Forging forged steel Gas Steam Turbine Valve Spindles Stems Rods,UNS R30783 Forged Forging steam turbine impeller wheels turbine discs disks blisks, and UNS R30783 forged forging parts forged forging pieces forged forging steel components pieces material as per the requirement of the client
The alloy is strengthened by a precipitation-hardening heat treatment made possible by additions of niobium and aluminum. In addition, the aluminum content provides excellent resistance to oxidation at high temperature.
The alloy’s density is 5% less than those of superalloys such as UNS R30783. The combination of low expansion, high strength and excellent resistance to oxidation makes the alloy especially useful for gas turbine and steam turbine components.
The low expansion enables closer control of clearances and tolerances for greater power output and fuel efficiency.
Table 1 - Limiting Chemical Composition*, %
Chromium……………………………………………………………. 2.5-3.5
Nickel ……………………………………………………………….26.0-30.0
Iron ……………………………………………………………………24.0-27.0
Niobium…………………………………………………………………2.5-3.5
Aluminum………………………………………………………………5.0-6.0
Cobalt………………………………………………………………Remainder
Boron……………………………………………………………..0.003-0.012
Carbon………………………………………………………………0.03 max.
Manganese………………………………………………………..0.50 max.
Silicon……………………………………………………………….0.50 max.
Phosphorus……………………………………………………..0.015 max.
Sulfur ……………………………………………………………….0.005 max
Titanium…………………………………………………………………0.1-0.4
Copper……………………………………………………………….0.50 max
Physical Properties of UNS R30783
Table 2 - Physical Constants
Density, g/cm3…………………………………………………………..7.81
lb/in3………………………………………………………….0.282
Melting Range, °F ……………………………………………..2437-2565
°C …………………………………………….1336-1407
Specific Heat, Btu/lb•°F (77°F)……………………………………0.109
J/kg•°C (25°C)……………………………………….455
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