The Universal Selection Source: Plastics & Elastomers


Hardness Shore D

The Shore D Hardness test (also called Durometer Hardness Test)  is used when the material is too soft to be measured by a Rockwell test. For very soft materials such as rubber or TPEs, the Shore A test is recommended.


How Does a Shore Hardness Test Work?


Hardness Shore Tester

Shore D Hardness  is a standardized test consisting in measuring the depth of penetration of a specific indenter. Test methods used to measure Shore D Hardness are ASTM D2240 and ISO 868.


The hardness value is determined by the penetration of the Durometer indenter foot into the sample. Shore Hardness measures are dimensionless. It goes between 0 and 100. The higher number represents the harder material. 


The resulting depth is dependent on:


  • Hardness of the material
  • Its viscoelasticity
  • Shape of the indenter
  • Duration of the test.


One can clearly see the conceptual parallels between the Rockwell method and the Shore method. Today, off the shelf equipment, at least some of which is automated, can be purchased for immediate use and testing according to standardized ASTM/ISO procedures.



Typical Hardness Shore D Values



Name of the polymer Explicit name of the polymer Min Value Max Value
ABS Acrylonitrile-Butadiene Styrene 100.000 100.000
ABS FR Acrylonitrile-Butadiene Styrene flame retardant 80.000 90.000
ABS High Heat Acrylonitrile-Butadiene Styrene High Heat 80.000 85.000
ABS High Impact Acrylonitrile-Butadiene Styrene High Impact 75.000 85.000
ABS/PC Acrylonitrile-Butadiene Styrene/Polycarbonate 85.000 90.000
ABS/PC 20% GF Acrylonitrile-Butadiene Styrene/Polycarbonate 20% glass fiber 85.000 93.000
ABS/PC FR Acrylonitrile-Butadiene Styrene/Polycarbonate flame retardant 85.000 93.000
ASA Acrylonitrile Styrene Acrylate 75.000 80.000
ASA/PC Acrylonitrile Styrene Acrylate/Polycarbonate 80.000 85.000
ASA/PC FR Acrylonitrile Styrene Acrylate/Polycarbonate flame retardant 80.000 90.000
ASA/PVC Acrylonitrile Styrene Acrylate/Polyvinyl Chloride 75.000 90.000
CA - Cellulose Acetate Cellulose Acetate 50.000 95.000
CAB - Cellulose Acetate Butyrate Cellulose Acetate Butyrate 60.000 90.000
CP - Cellulose Proprionate Cellulose Proprionate 40.000 95.000
CPVC - Chlorinated Polyvinyl Chloride CPVC - Chlorinated Polyvinyl Chloride 83.000 90.000
ECTFE Ethylene Chlorotrifluoroethylene 75.000 75.000
ETFE Ethylene Tetrafluoroethylene 70.000 75.000
EVA Ethylene Vinyl Acetate 15.000 45.000
FEP Fluorinated Ethylene Propylene 60.000 65.000
HDPE - High Density Polyethylene HDPE - High Density Polyethylene 60.000 70.000
HIPS - High Impact Polystyrene HIPS - High Impact Polystyrene 60.000 75.000
HIPS FR V0 High Impact Polystyrene flame retardant V0 60.000 70.000
Ionomer (EMAC) Ionomer (Ethylene-Methyl Acrylate Copolymer) 30.000 66.000
LCP Liquid Crystal Polymer 82.000 95.000
LCP CF Liquid Crystal Polymer carbon fiber 95.000 95.000
LCP GF Liquid Crystal Polymer glass fiber 90.000 95.000
LCP MINERAL Liquid Crystal Polymer mineral 90.000 95.000
LDPE - Low Density Polyethylene LDPE - Low Density Polyethylene 40.000 50.000
LLDPE - Linear Low Density Polyethylene LLDPE - Linear Low Density Polyethylene 55.000 56.000
PA 11 30% Glass fiber reinforced Polyamide 11 30% Glass fiber reinforced 73.000 78.000
PA 11 conductive Polyamide 11 conductive 64.000 64.000
PA 11 flexible Polyamide 11 flexible 59.000 63.000
PA 11 rigid Polyamide 11 rigid 64.000 72.000
PA 12 conductive Polyamide 12 conductive 71.000
PA 12 fiber reinforced Polyamide 12 fiber reinforced 70.000 80.000
PA 12 flexible Polyamide 12 flexible 63.000 63.000
PA 12 glass filled Polyamide 12 glass filled 58.000 75.000
PA 12 rigid Polyamide 12 rigid 68.000 72.000
PA 6 Polyamide 6 80.000 95.000
PA 6-10 Polyamide 6-10 60.000 85.000
PA 66 Polyamide 6-6 80.000 95.000
PA 66 30% GF Polyamide 6-6 30% glass fiber 80.000 95.000
PA 66 30% mineral filled Polyamide 6-6 30% mineral filled 80.000 95.000
PA 66 IM 15-30% GF Polyamide 6-6 impact modified 15-30% glass fiber 70.000 90.000
PA 66 impact modified Polyamide 6-6 impact modified 70.000 85.000
PA semi-aromatic Polyamide semi-aromatic 81.000 83.000
PAI Polyamide-Imide 90.000 99.000
PAI 30% GF Polyamide-Imide 30% glass fiber 95.000 99.000
PAI low friction Polyamide-Imide low friction 95.000 99.000
PAN Polyacrylonitrile 85.000 93.000
PARA 30-60% GF Polyarylamide 30-60% glass fiber 90.000 90.000
PBT Polybutylene Terephthalate 90.000 95.000
PBT 30% GF Polybutylene Terephthalate 30% glass fiber 95.000 99.000
PC 20-40% GF Polycarbonate 20-40% glass fiber 90.000 95.000
PC 20-40% GF FR Polycarbonate 20-40% glass fiber flame retardant 90.000 95.000
PC high heat Polycarbonate high heat 90.000 95.000
PCL - Polycaprolactone Polycaprolactone 55.000 55.000
PCTFE Polymonochlorotrifluoroethylene 75.000 85.000
PE 30% GF Polyethylene 30% glass fiber 70.000 80.000
PEEK Polyetheretherketone 85.000 95.000
PEEK 30% CF Polyetheretherketone 30% carbon fiber 90.000 99.000
PEEK 30% GF Polyetheretherketone 30% glass fiber 90.000 99.000
PEI Polyetherimide 95.000 99.000
PEI 30% GF Polyetherimide 30% glass fiber 95.000 99.000
PEI mineral filled Polyetherimide mineral filled 95.000 99.000
PESU Polyethersulfone 95.000 95.000
PESU 10-30% GF Polyethersulfone 10-30% glass fiber 95.000 95.000
PET Polyethylene Terephtalate 85.000 95.000
PET 30% GF Polyethylene Terephtalate 30% glass fiber 95.000 99.000
PET 30/35% GF Impact modified Polyethylene Terephtalate 30/35% glass fiber impact modified 90.000 90.000
PE-UHMW Polyethylene -Ultra High Molecular Weight 60.000 70.000
PFA Perfluoroalkoxy 60.000 65.000
PMMA Polymethylmethacrylate (Acrylic) 90.000 99.000
PMMA high heat Polymethylmethacrylate (Acrylic) high heat 99.000 99.000
PMMA Impact modified Polymethylmethacrylate (Acrylic) impact modified 83.000 95.000
PMP Polymethylpentene 60.000 70.000
PMP 30% GF Polymethylpentene 30% glass fiber 75.000 80.000
PMP mineral filled Polymethylpentene mineral filled 75.000 80.000
POM Polyoxymethylene (acetal) 80.000 95.000
POM impact modified Polyoxymethylene (acetal) impact modified 80.000 92.000
POM low friction Polyoxymethylene (acetal) low friction 80.000 95.000
POM mineral filled Polyoxymethylene (acetal) mineral filled 92.000 95.000
PP 10-20% GF Polypropylene 10-20% glass fiber 80.000 85.000
PP 10-40% mineral filled Polypropylene 10-40% mineral filled 70.000 80.000
PP 10-40% TALC Polypropylene 10-40% talc 75.000 85.000
PP 30-40% GF Polypropylene 30-40% glass fiber 85.000 88.000
PP copo Polypropylene copolymer 70.000 80.000
PP homo Polypropylene homopolymer 70.000 83.000
PP impact modified Polypropylene impact modified 45.000 55.000
PPE Polyphenylene Ether 85.000 90.000
PPE 30% GF Polyphenylene Ether 30% glass fiber 85.000 90.000
PPE FR Polyphenylene Ether flame retardant 85.000 90.000
PPE impact modified Polyphenylene Ether impact modified 85.000 90.000
PPE mineral filled Polyphenylene Ether mineral filled 85.000 90.000
PPS Polyphenylene Sulfide 90.000 95.000
PPS 20-30% GF Polyphenylene Sulfide 20-30% glass fiber 90.000 99.000
PPS 40% GF Polyphenylene Sulfide 40% glass fiber 95.000 99.000
PPS conductive Polyphenylene Sulfide conductive 90.000 95.000
PPS GF & mineral Polyphenylene Sulfide glass fiber & mineral 88.000 95.000
PPSU Polyphenylene Sulfone 80.000 80.000
PS crystal Polystyrene crystal 85.000 90.000
PS high heat Polystyrene high heat 90.000 95.000
PSU Polysulfone 80.000 80.000
PSU 30% GF Polysulfone 30% glass fiber 95.000 95.000
PSU mineral filled Polysulfone mineral filled 90.000 90.000
PTFE Polytetrafluoroethylene 50.000 65.000
PTFE 25% GF Polytetrafluoroethylene 25% glass fiber 60.000 70.000
PVC 20% GF Polyvinyl Chloride 20% glass fiber 85.000 90.000
PVC plasticized Polyvinyl Chloride plasticized 15.000 70.000
PVC plasticized filled Polyvinyl Chloride plasticized filled 15.000 70.000
PVC rigid Polyvinyl Chloride rigid 65.000 90.000
PVDC Polyvinylidene Chloride 88.000 90.000
PVDF Polyvinylidene Fluoride 65.000 82.000
SAN Styrene Acrylonitrile 75.000 95.000
SAN 20% GF Styrene Acrylonitrile 20% glass fiber 90.000 99.000
SMA Styrene Maleic Anhydride 83.000 85.000
SMA 20% GF Styrene Maleic Anhydride 20% glass fiber 83.000 85.000
SMA FR V0 Styrene Maleic Anhydride flame retardant V0 83.000 85.000
TPS-Injection General Purpose Thermoplastic Starch GP 45.000 62.000
TPS-Injection Water Resistant Thermoplastic Starch WR 52.400 53.600
XLPE - Crosslinked Polyethylene XLPE - Crosslinked Polyethylene 30.000 80.000


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