The material must be able to withstand the test of force in the application scene, not bend, be constant, not break, and not deform.
Harder materials are generally more scratch-resistant, durable, and resistant to tearing and creasing.
The material absorbs force, can bend in different directions and can return to its original state.
Is it easy to process into a long-lasting shape? Although the persimmon is soft and can be squeezed freely, it will be finished after the squeezing. Another extreme example is that diamonds are too hard to be processed. Diamonds can be used to process other things.
The force deformation capacity in the length direction. The elasticity of the rubber band is very good. In terms of materials, thermoplastic elastomers generally have good ductility.
The deformability before breaking or breaking.
Before cracks appear, the ability of the material to change its shape in all directions is the test of the ability of the material to be plastic again.
The material has the ability to resist impact. It won’t break or break if you hit it suddenly.
I don’t need to say more about this. Under normal circumstances, materials with good conductivity have good thermal conductivity.