The brasses-copper alloys, Mechanical Engineering

Assignment Help:

The Brasses

70/30 brass also called as cartridge brass contains 70% copper and 30% Zinc. This is employed for cartridge cases, sheet fabrication, and condenser tubes and for usual purposes. Its superior tensile strength varies in between 350 and 600 N/mm2. This is soft and ductile in and annealed form can endure severe cold working.

60/40 brass of Muntz metal contains 60% copper and 40% Zinc. Its UTS varies in between 400 and 850 N/mm2. This is suitable for hot working operations and for casting also. Many marine fittings and cast valves are made out of such brass. Addition of 2% Pb enhances its machin-ability.

A minute addition of Fe, Al, Sn, Mn and Nickel to 60/40 brass enhances its strength considerably. Marine shafts and propellers pump rods, switch gears, autoclaves and high strength fittings are made out of those brasses.

Brazing alloys are in actual the brasses of 50/50 composition along with minute additions of Al, Mn and Sn. These brasses are hard and brittle.

 


Related Discussions:- The brasses-copper alloys

What is thermoplastic plastics, Q. What is thermoplastic plastics ? Thes...

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

Determine the proper torque values from the flange, Q. Determine the proper...

Q. Determine the proper torque values from the Flange? Determine the proper torque values from the Flange Closure Sheet. Apply the torque, using a hand torque-measuring wrench,

Jominy test, Jominy Test: Additionally convenient laboratory test for ...

Jominy Test: Additionally convenient laboratory test for harden-ability is Jominy test. A standard test piece of steel as illustrated in figure of The Jominy Test of Harden-ab

Angle of projection, A ball is thrown from a point with a speed V  at an an...

A ball is thrown from a point with a speed V  at an angle of projection  θ . From the same point and  at the same instant, a person starts running with a constant speed V/2 to catc

Austempering, Austempering: The component to be hardened is initialy ...

Austempering: The component to be hardened is initialy austenised and after that quenched into a lead or salt bath held at just over the martensite transformation temperature

Free body diagrams of cylindrical rollers - mechanics, Free body diagrams o...

Free body diagrams of cylindrical rollers: The t wo cylindrical rollers A and B which are identical, each having weight W are supported by an inclined plane and vertic

Visual realism, VISUAL REALISM: Hidden line and surface removal elimin...

VISUAL REALISM: Hidden line and surface removal eliminates the ambiguities of the displays of three-dimensional models and is considered the first step toward visual realism.

Calculate the compression ratio - maximum pressure of engine, (a) Derive an...

(a) Derive an expression for the otto cycle to determine the Mean Effective Pressure and efficiency. (b)The two engines are to perform on diesel and otto cycle with the followin

Evaluate the composite transformation matrix, A triangle ABC with vertices ...

A triangle ABC with vertices A (30,20), B(90,20), C(30,80) is to be scaled by a factor of 0.5 about a point X(50,40). Calculate :- (i) The composite transformation matrix; and

Orthographic projections, Orthographic Projections: As you learned pre...

Orthographic Projections: As you learned previously about the theory of projection of points, planes and lines, the next significant is the projection of solids that have thre

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd