Injection Molding Materials

Proper material selection is critical in prototyping and low-volume part production. You should consider the mechanical properties, moldability characteristics and cost of the material.

If you choose to supply your own resin for injection molding, please complete this customer-supplied resins form, which requires you to upload MSDS and process data sheet documents. A representative from Proto Labs will contact you with shipping information and a material ID number once your information has been processed.

For additional information on the material strength, resistance, dimensional stability and other characteristics of Proto Labs’ frequently used thermoplastics, download our Resin Guide PDF.
Stocked Materials
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Add Plastic Injection Molding Material
Material Features Tensile Strength (psi) Flexural Modulas (psi) Impact Strength (notched izod ft-lb/in) Max Temperature (deflection or softening) Data Sheet Admin Stuff

ABS (Acrylonitrile Butadiene Styrene)

  • Good impact resistance
  • Good processability and appearance
  • Dimensional stability
5,000-12,000 270,000-380,000 3.0-7.5 140°-200° F Edit | Delete

ABS/PC (Acrylonitrile Butadiene Styrene / Polycarbonate)

  • Good impact resistance
  • Good processability and appearance
  • Dimensional stability
6,400-18,000 300,000-390,000 8-12 140°-210° F Edit | Delete

ETPU (Engineered Thermoplastic Polyurethane)

  • Reduced stress cracking
  • Impact resistance
10,000 319,000 10 280° F Edit | Delete

HDPE (High Density Polyethylene)

  • Durable
  • Good stiffness
  • Impact resistant
2,900-4,500 100,000-470,000 80 ft-lb/in² 130-250° F Edit | Delete

LCP (Liquid Crystal Polymer)

  • High temperature
  • Thin walls acceptable
  • High strength
12,000-32,000 1,300,000-4,600,000 10 525° F Edit | Delete

LDPE (Low Density Polyethylene)

  • Good impact strength
  • Crack resistant
  • Excellent flexibility
1,200-4,000 34,000-48,000 130 ft-lb/in² 130-190° F Edit | Delete

LLDPE (Linear Low Density Polyethylene)

  • Excellent low temperature flexibility
1400 34,000 190 190° F Edit | Delete

PA (Nylon)

  • Temperature resistance
  • Unfilled and glass filled available
6,000-29,000 170,000-1,680,000 2-8 180°-350° F Edit | Delete

PBT (Polybutylene Terephthalate)

  • Good chemical resistance
  • Good dimensional stability
  • Low moisture absorption
6,000-17,500 300,000-1,300,000 1-3 200-420° F Edit | Delete

PC (Polycarbonate)

  • Impact resistance
  • Dimensional stability
9,000-23,000 335,000-1,600,000 2-18 150-300° F Edit | Delete

PC/PBT (Polycarbonate / Polybutylene Terephthalate)

  • Good impact resistance at low temperatures
6300 250,000 17 210° F Edit | Delete

PEEK (Polyetheretherketone)

  • Good sterilizability
  • Good chemical resistance
  • High strength and stiffness
  • Creep resistant
13,000-30,000 500,000-1,900,000 3.5-4.5 300°-625° F Edit | Delete

PEI (Ultem)(Polyether Imide)

  • High heat resistance
  • High strength and impact resistance
14,000-28,000 480,000-1,800,000 1-2 350-420° F Edit | Delete

PET (Thermoplastic Polyester Resin)

  • Good balance of strength, stiffness and toughness
  • Excellent electrical properties and chemical resistance
7,000-23,000 350,000-3,000,000 .5-8 250-470° F Edit | Delete

PETG (Copolyester)

  • Good toughness
  • Radiation and E-beam sterilizable
  • High clarity
7250 305,000 3 185° F Edit | Delete

PMMA (Acrylic)

  • Optical clarity
  • Rigid
2,800-13,000 221,000-550,000 .25-1 180°-215° F Edit | Delete

POM (Acetal or Delrin)

  • Chemical Resistant
  • High tensile strength
6,000-22,000 120,000-170,000 .75-2 180°-300° F Edit | Delete

PP (Polypropylene)

  • Best for living hinge
  • Chemical resistant
  • Solvent resistant
3,900-18,500 150,000-1,500,000 0.5-5.5 120°-300° F Edit | Delete

PPE/PS (Polyphenylene Ether / High Impace Polystyrene)

  • Low water absorption
  • Hydrolytic stability
  • Suitable for fluid engineering applications
  • Good dimensional stability
8500 384,000 2.5-8 250-280° F Edit | Delete

PPS (Polyphenylene Sulfide)

  • Good chemical resistance
  • Good mechanical properties at high temperatures
  • High heat resistance
14,000-28,000 550-2,900,000 .5-6 400-500° F Edit | Delete

PS (High Impact Polystyrene)

  • High gloss
  • High impact and stiffness
4,200-11,000 160,000-950,000 .25-7 185-190° F Edit | Delete

PSU (Polysulfone)

  • Tough, rigid and high strength
  • Hydrolysis and oxidation resistant
  • Withstands repeated sterilization
  • Highly resistant to mineral acid, alkali and salt solutions
9,500-18,000 390,000-1,500,000 .5-7 300-350° F Edit | Delete

SB (Styrene Butadiene)

  • Good stiffness and toughness
  • High clarity
  • Warp resistant
  • Can be used in living hinge
4850 261,000 .5-1 150-160° F Edit | Delete

TPE/TPV (Thermoplastic Elastomer)/(Thermoplastic Vulcanizate)

  • Flexible
1,000-7,000 5,000-800,000 200-300° F Edit | Delete

TPU (Thermoplastic Polyurethane Elastomer)

  • Abrasion resistant
  • Impact strength
  • Flexible
6,900-12,000 260,000-340,000 .75-10 150-250° F Edit | Delete
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