Need a durable platic material. 2

[Long428]

I am designing a plastic part that is 4ft. X 3.5ft x 1in. It must be light weight and very durable. I can design out any excess weight, but I need a starting point for what material to use. Part will be injection molded. Any suggestions on what material to use?

 

[MikeVV]

Nylon is always a good material - it can get expensive however. UHMW Polyurethane is a good material although it is not as stiff / strong but less cost than nylon. Delrin is a good choce because if its strength and durability. These materials are often used for special tools. Your environments (temperature, humidity) and loading conditions (static and dynamic) must be considered.

 

[100322]

1.You would need a very low melt material.
2.Acetal is Very heavy
Nylon is less Heavy
ABS less
Polycarbonate is light weight
3.The cost of ASHLENE resin is also lightweight.
Try them

http://www.ashleypolymers.com

 

[plasticbob69]

It is impossible to specify a material based on the limited info provided. More importantly: what conditions /environment/ mechanical stresses will the part see? There is a very limited number of materials that can be injection molded into 1 inch wall thickness sections, let alone a huge part 4 ft by 3.5 ft by 1 in.
Please provide some basic structural requirements of the part. The other posts are just wild guesses and will do you no good.