Materials Selection and Testing. A description of the properties of various different materials.

Material Selection and Testing Outcome 3 Q3.1.(a). - Mechanical Drive Shaft - A suitable material would be medium carbon steel. - Electrical Socket - Suitable materials for this would be, brass cable terminals, plastic, and mild steel screws. - Welded Pressure Vessel - A suitable material would be manganese steel. (b). - Medium carbon steel - A drive shaft is required to be strong, tough, have high fatigue resistance and a high surface hardness, at …

…desire to employ materials of high strength and satisfactory fracture toughness for pressure vessels, this makes manganese metal ideal for this type of use. This type of metal has 1.5% manganese added which increases its shock resistance considerably. However, the principal manganese steels contain between 12 - 15% manganese and have very distinct work hardening qualities. They can be forged and machined. Their surfaces harden very rapidly when subjected to heavy wear, whilst the underlying metal remains tough.