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Cobalt-base super alloys (e.g. UNS R30155 (Grade 661) and R30816 (Grade 671)) have superior strength to the nickel base alloys above 1800°F (980°C).
The refractory metal alloys (including tantalum, tungsten, niobium, and molybdenum) are not typically used in high temperature applications, except as alloying elements. They are commercially available, but are often used in environmentally protected applications. Minor additions of niobium and molybdenum to stainless steels and nickel-base alloys typically enhance high temperature properties.
where expendable pattern is used?
Magnitude of the load - hollow cast iron cylinder: Q: A hollow cast iron cylinder 4 m long, 300 mm is the outer diameter, and thickness of metal 50 mm is subjected to central
DENSIT Y (ρ ): Density is defined as mass per unit volume; Density = mass/ volume; = m/v, kg/m 3 P for Hg = 13.6 × 103 kg/m 3 for water = 1000 kg/m 3 Specifi
Q. What is thermoplastic plastics ? These plastic soften under heat, harden on cooling, and can be resoften under heat. Thus, they retain their fusibility, solubility, an
Prove that the ratio of belt tension is given by the T 1 / T 2 = e μθ Let T1 = Tension in belt on the tight side T2 = Tension in belt on the slack side θ = Angle
Explain the meaning of A raft foundation A raft foundation, as also combined footing, cannot be considered to be the opposite of a slab supported on the columns with a defined
modified soderberg line method
(a) What are the need of a surface condensing ? Write disadvantages and advantages of Jet condenser and surface condenser. (b) A surface condenser is designed to handle 10000 Kg
Plate clutch pressure: Check plate clutch pressure for any step using a straight edge.
Q= In an investigation of the thermodynamic properties of alpha-manganese,the following heat contents determined H 700 - H 298 = 2895 cal/g-atm H 1000 - H 298 = 5450 cal
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