Copper-nickel alloys, Mechanical Engineering

Copper-Nickel Alloys

Complete solubility arises between nickel and copper. All alloys have same microstructure and may be cold or hot worked.

Cupro-nickel also termed as German silver is extremely ductile and malleable. This is good against corrosion because of salt water. Condenser tubes are major parts made out of this alloy. This is also employed for coinage. 75/25, 80/20 and 70/30 alloys are very usual.

Monel metal is essentially 70 percent Nickel and 30% Cu along with minute amounts of iron and other elements. Alloy is well identified for its corrosion resistance and high strength. This alloy is largely employed for chemical and food processing plants. This also finds great employ as turbine blades, screws, nails and valves corrosion resistance bolts. This is known for its individuality silver luster.

                                  Table 19 and 20 respectively illustrates Brasses and Bronzes along with their applications.

                                                        Table no.19: Composition, Properties and Applications of Brasses

Gliding metal (95 Cu, 5 Zn)

High ductility and corrosion resistance, coins, medals, gold platings

Red brass (85 Cu, 15 Zn)

Good corrosion resistance, workability, heat exchanger tube, radiator cores

Cartridge brass (70 Cu, 30 Zn)

Good strength and ductility, rivets, springs, automotive radiator cores

Yellow brass (65 Cu, 35 Zn)

Screws, rivets reflectors, plumbing accessories, automotive radiator cores

Muntz metal (60 Cu, 40 Zn)

Soundness and good machinability, condenser tubes, architectural work

Leaded red brass (85 Cu, 5 Zn, 5 Sn, 5

Pb)

Fair strength, soundness and good machining in cast state, pressure valves, pipe fittings, pump fittings

Leaded commercial bronze

(89 Cu, 9.25 Zn, 1.75 Pb)

Screws, screw machine parts, electrical connectors, builder's applications

Admiralty brass (71 Cu, 28 Zn, 1 Sn)

Condenser, evaporator and heat exchanger tubes, marine applications

High leaded brass (64 Cu, 33 Zn, 2 Pb)

Flat products, gears, wheels

 

                                                        Table no.20: Composition and Applications of a Few Bronzes

Phosphor bronze (94.8 Cu, 5 Sn, 0.2 P)

Bolts, electric contracts, spring, bearing

Phosphor bronze (89.8 Cu, 10 Sn, 0.2 P)

Such applications where high strength and

resistance to salt water is desired, bushing and gears

Gun metal (88 Cu, 10 Sn, 2 Zn)

Sand cast, sued under heavy pressure such as gears and bearings

Aluminium bronze

(88 Cu, 10.5 Al, 3.5 Fe )

High UTS

Beryllium bronze (98 Cu, 1.7 Be, 0.3

Co)

Very high mechanical strength, springs, used against fatigue, wear and corrosion

(UTS - 1200 MPa)

Posted Date: 2/27/2013 1:20:33 AM | Location : United States







Related Discussions:- Copper-nickel alloys, Assignment Help, Ask Question on Copper-nickel alloys, Get Answer, Expert's Help, Copper-nickel alloys Discussions

Write discussion on Copper-nickel alloys
Your posts are moderated
Related Questions
Kinetics of a Particle: We have seen the effect of forces on a particle. The laws of motion for a particle are extended to include a system of particles or a rigid body. It is

Cylinder Bore: The nominal inner diameter of the working cylinder is called the cylinder bore and is designated by the letter D and is usually expressed in millimetre (mm).


steam boilar

Q.   Derive the expression of torque developed in closely excited magnetic system. Clearly explain then assumption made.   Sol. Double - Excited System   A doubly - ex

(Buoyancy of a submerged body; compressibility of air) A grade 4 science student inverts a cup full of air into a water tank. If it takes 1 lb of force to hold the cup down 3

Find out the reactions at hinge: A board ABCD is held in position as shown in Figure by a cable BE and a hinge at A. If the weight of the board is 5 kN, find out the reactions

Q. Burner Management - Discrete Controls for steam generators? The burner management system shall control the generator operation during pre-purge, light off, normal operation,

construction and working of michelsons interferometer

do you help me with an assignment in machin dynamics which need a solid works program and CAD prototype