What are non-metallic materials? Non-metallic materials are those materials which lack metallic attributes (lustrous, malleable, ductile, good conductors of heat and electricity etc.). They are generally used in engineering due to their flexibility, low cost and resistance to heat and electricity. Following are some important non-metallic materials used in the design of machine elements. Plastics… Read More: Non-Metals Used in the Design of Machine Elements »

What are Non-ferrous Metals? Metals containing elements other than iron as their chief constituents are usually referred to as non-ferrous metals. In other words Non-ferrous metals are the metals (including alloys) which do not contain Iron (or Ferrite) in an appreciable amount. Generally non-ferrous metals are costlier when compared to ferrous metals, but they are… Read More: Non-ferrous Metals | Definition, Examples, Alloys, Properties »

What is Steel? Steel is an alloy of Iron, Carbon and some other elements. These elements are Tungsten, Molybdenum, Chromium, Nickle, manganese, Silicon etc. Steel is by far the most important engineering material. It has high tensile strength in a low cost, which makes it a suitable choice for the construction of tools, bridges, ships,… Read More: Steel | Types, Properties, Limitations, Alloying Elements »

In this article we would study limits, fits and tolerances regarding machine parts (to be assembled). Limit When we have to assemble two machine parts (for example nut and bolt) then accuracy in the dimensions of each part is necessary. Otherwise it would be very difficult (sometimes impossible) to assemble them. The exact (or actual)… Read More: Limits, Fits and Tolerances | Types [Explained with Diagram] »