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Differences between HDPE and LPDE

HDPE (high density polyethylene) is a durable, versatile, low-cost, abrasion- and chemical-resistant plastic material. HDPE is simple to fabricate and also weld making use of thermoplastic welding equipment. It is fantastic choice because that fabricated water tanks and also chemical tanks.

LDPE (low thickness polyethylene) is a soft, flexible, lightweight plastic material. That is often used because that orthotics and also prosthetics. LDPE has good chemical and affect resistance and also is easy to fabricate and also form.

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HDPE material CharacteristicsEasy come machineGood chemistry resistanceImpact resistantEasy to fabricateEasy come weldHDPE Applications:Chemical tanksCutting boards for food preparationWater pipeline flanges (HDPE pipeline grade)Outdoor and indoor playground systemsMarine building (pile guards, bumpers, anti-skid surfaces)Orthotics and prosthetics – AFOs, KAFOsLight-duty tank, chute, and bin liningsOutdoor cabinetry and furnitureHDPE typical BrandsPolystone® G, Sanatec®, Orthoform®,Sanalite®, Seaboard®, King StarBoard®, Playboard®, SIMOLIFE, Hitec®
LDPE material CharacteristicsSoft and also pliableEasy come weld and also heat sealGood chemistry resistanceLow humidity absorptionImpact resistanceStain resistanceLDPE Applications:OrthoticsProstheticsLDPE typical BrandsOrthoform®, Denesetec, TECAFINE®

Typical properties of HDPE vs. LDPEUNITSASTM TESTHDPELDPE
Specific gravity (73°F)D7920.960.92
Tensile toughness (73°F)psiD6384,0001,400
Tensile elongation(73°F)%D638600500
Flexural modulus of elasticity(73°F)psiD790200,00030,000
HardnessRockwell M&R, Durometer shore D(73°F)scale as notedD785,D2240Shore D 69Shore D 55
Izod impact (notched, 73°F)ft-lbs/inD256-no break
Coefficient of linear thermal expansionin/in/°Fx10-5D6967.0-
Heat deflection temperature

Values may vary according to brand name. Please ask your Curbell plastics representative for an ext specific information around an individual brand. *Double-15° notch


contact Curbell Plastics, Inc. 7 Cobham drive Orchard Park, NY 14127 Nationwide 1-800-553-0335 Corporate Office 716-667-3377
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