Plastic Flow Ratio

ABS175:1
Acetal140:1
Acrylic130~150:1
Nylon150:1
Polycarbonate100:1
Polyethylene(low density)275~300:1
Polyethylene(high density)225~250:1
Polypropylene250~ 275:1
Polystyrene200~250:1
Polyvinyl Chloride, rigid100:1

The following table is a listing of common materials and the wall thickness they can flow through.
This table shows that an easy-flow material (such as crystalline nylon) allows thinner wall.

MaterialMinimum (in./mm)Maximum (in./mm)
ABS0.030/0.7620.125/3.175
Acetal0.015/0.3810.125/3.175
Acrylic0.025/0.6350.250/6.350
Nylon(amorphous)0.030/0.7620.125/3.175
Nylon(crystalline)0.015/0.3810.125/3.175
Phenolic0.045/1.1431.000/25.400
Polycarbonate0.040/1.0160.400/10.160
Polyester(TP)0.025/0.6350.125/3.175
Polyester(TS)0.040/1.0160.500/12.700
Polyethylene(HD)0.020/0.5080.250/6.350
Polyrthylene(LD)0.030/0.7620.250/6.350
Polypropylene0.025/0.6350.300/7.620
PPO0.030/0.7620.400/10.160
Polystyrene0.030/0.7620.250/6.350
PVC0.040/1.0160.400/10.160

Related