Knowledge of the mechanical properties of polymers and other materials is essential for several tasks in materials science, such as component design and materials development. Tensile testing is a method for determining many of the most defining mechanical characteristics of the material. However, teaching the V-mapping procedure resulted in different material definitions. The mean, minimum, and maximum values of Young's modulus are listed for the most refined mesh for both methods. The NI method leads to a higher average Young's modulus than the V3 method, one-sided t-test of differences, p lt. Materials engineers must write plans and reports clearly so that people without a materials engineering background can understand the concepts. Licenses, certifications and registrations. Materials engineer licensure is not as common as for other engineering professions, nor is it required for entry-level positions. Copper Cu: Copper is highly conductive and has excellent electrical and thermal properties. Brass: Brass is an alloy of copper and zinc. Bronze: Bronze is an alloy of copper and other elements. Nickel Ni: Nickel is a versatile metal with excellent corrosion and high temperature resistance.