Protomold Injection Molded Part Resin Guide

Protomold Injection Molded Part Resin Guide Mechanical Properties

Moldability Characteristics Warp and Dimen-

Some Resin Generic brand Name

names

Acetal Nylon 6/6 Nylon 6/6, glass filled Polypropylene

Delrin, Celcon

thick

Thick

hard on Mold &

Relative

Strength

Resistance

Strength

Molded

features

sections

Sections

Flash

Ejectors

Cost

Medium

Medium

Medium-Low

Fair

Fair

Poor

Good

Good

Fair

Medium

High

Low

Fair

Excellent

Good

Fair

Poor

Fair

Medium

High

Medium

High

Poor

Good

Excellent

Good

Fair

Fair

Medium

Low

High

Low

Fair

Excellent

Poor

Poor

Poor

Good

Low

Low

High

Low

Fair

Excellent

Unknown

Poor

Poor

Good

Low

Medium

High

Medium High

Good

Fair

Fair to Good

Fair

Good

Good

Medium High

Medium-Low

High

Low

Good

Fair

Good

Fair

Good

Good

Low

Medium

High

Medium

Fair

Good

Fair

Good

Good

Medium

Medium

High

Low

Fair

Fair

Unknown

Fair

Fair

Good

Medium High

High

Medium

Medium

Poor

Fair

Good

Good

Fair

Fair

Medium High

Medium-Low

Low

Low

Good

Good

Unknown

Fair

Fair

Good

Low

Low

High

Low

Poor

Excellent

Excellent

Good

Poor

Excellent

Medium-Low

Medium

Low

Low

Good

Fair

Excellent

Good

Good

Good

Medium

Maxxam, Profax

Chevron

(HDPE)

HDPE

Styrene (ABS)

Fills Small

Medium

Polyethylene

Butadiene

High Temp. Accuracy,

Sink in

Zytel

Dow HDPE,

Acrylonitrile

Impact

Voids in

Zytel

High Density

Polycarbonate

High Temp.

sional

Lexan, Makrolon Lustran, Cycolac

Polycarbonate /

Cycoloy,

ABS Alloy

Bayblend

Polybutylene

Valox,

Terephthalate

Crastin

GoodExcellent

Polybutylene and

Valox,

Polyethylene

Crastin,

Terephthalate,

Rynite

glass filled Polystyrene

Styron

Thermoplastic

Isoplast,

Elastomer

Santoprene

Acrylic

Plexiglass, Acrylite