2/ The main advantages of the structural non-metallie composites can be described as: 2.1. They are cheaper than metals. In the same time non-metallic composites are notable with good electrical and...

Which is correct


Extracted text: 2/ The main advantages of the structural non-metallie composites can be described as: 2.1. They are cheaper than metals. In the same time non-metallic composites are notable with good electrical and thermal properties: 2.2. Non-metallic composites surpass the metals and mineral materials in regard to their heat resistance. They have high tensile and flexural modulus. 2.3. The structural non-metallic composites can reach higher nmechanical strength than most of the metals and other traditional materials. The SNC articles are 3- 4 times lighter in weight than the metal analogues. Processing methods and exploiting of the articles are energy saving and ecologically sound. Most of the SNC have high chemical resistance. There are many inmportant applications of structural materials dominated of the modern composites. e materials?