From list of the materials in the table above, please explain : 1. Which material has the greatest elongation? Explain your reason. 2. Which material has the highest strength? Explain your reason. 3. Which the most brittle material? Explain your reason. 4. Which the most rigid material? Explain your reason. 5. Which materials are most easily deforms plastically? Explain your reason. 6. If the material with cylinder form has a diameter of 10 mm and loaded with a mass of 2600 kg as shown in the picture above. -Which material you choose for cylinder to be able to withstand the load and will not have the permanent extension? -Which material is used, if the cylinder diameter will have a permanent reduction? -Which material is used, if the cylinder will fail?

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Metrology of Screw Threads

Screw threads are a series of ridges having the profile of a helix. This helix profile runs continuously along the length of a uniform solid or a hollow bar of a circular cross-section at periodic intervals. These helix ridges are also formed over a conical bar. These continuous helical ridges are termed threads.