The Universal Selection Source: Plastics & Elastomers


Fire Resistance (LOI)

The purpose of the Limiting Oxygen Index (LOI) test, sometimes referred to as Oxygen Index, is to measure the relative flammability of plastics by burning them in a controlled atmosphere consisting of a mixture of oxygen and nitrogen. The Limiting Oxygen Index represents the minimum level of oxygen in the atmosphere that can sustain flame on a thermoplastic material. The higher the LOI value, the higher the non-flammability. The test results relate only to the behavior of the test specimens under the conditions of this test method. The results must not be used to infer the fire hazards of the material in other forms or under other fire conditions.

The most widely used standards to measure Oxygen Index are ASTM D2863 and ISO 4589.

Name of the polymer Explicit name of the polymer Min Value(%) Max Value(%)
ABS Acrylonitrile-Butadiene Styrene 19.000 19.000
ABS FR Acrylonitrile-Butadiene Styrene flame retardant 28.000 28.000
ABS High Heat Acrylonitrile-Butadiene Styrene High Heat 18.000 19.000
ABS High Impact Acrylonitrile-Butadiene Styrene High Impact 18.000 19.000
ABS/PC Acrylonitrile-Butadiene Styrene/Polycarbonate 21.000 34.000
ABS/PC 20% GF Acrylonitrile-Butadiene Styrene/Polycarbonate 20% glass fiber 24.000 24.000
Amorphous TPI, Highest heat, Chemical Resistant, 260C UL RTI Amorphous TPI, Highest heat, Chemical Resistant, 260C UL RTI 53.000 53.000
Amorphous TPI, Moderate Heat, Transparent Amorphous TPI, Moderate Heat, Transparent 45.000 45.000
Amorphous TPI, Moderate Heat, Transparent (Food Contact Approved) Amorphous TPI, Moderate Heat, Transparent (Food Contact Approved) 45.000 45.000
Amorphous TPI, Moderate Heat, Transparent (Mold Release grade) Amorphous TPI, Moderate Heat, Transparent (Mold Release grade) 45.000 45.000
Amorphous TPI, Moderate Heat, Transparent (Powder form) Amorphous TPI, Moderate Heat, Transparent (Powder form) 45.000 45.000
ASA Acrylonitrile Styrene Acrylate 19.000 19.000
ASA/PC Acrylonitrile Styrene Acrylate/Polycarbonate 21.000 21.000
CPVC - Chlorinated Polyvinyl Chloride CPVC - Chlorinated Polyvinyl Chloride 70.000 80.000
ECTFE Ethylene Chlorotrifluoroethylene 52.000 52.000
ETFE Ethylene Tetrafluoroethylene 30.000 30.000
EVA Ethylene Vinyl Acetate 18.000 19.000
FEP Fluorinated Ethylene Propylene 95.000 96.000
HDPE - High Density Polyethylene HDPE - High Density Polyethylene 17.000 18.000
HIPS - High Impact Polystyrene HIPS - High Impact Polystyrene 17.000 18.000
HIPS FR V0 High Impact Polystyrene flame retardant V0 17.000 26.000
LCP Liquid Crystal Polymer 35.000 50.000
LCP CF Liquid Crystal Polymer carbon fiber 33.000 37.000
LCP GF Liquid Crystal Polymer glass fiber 37.000 51.000
LCP MINERAL Liquid Crystal Polymer mineral 33.000 37.000
LDPE - Low Density Polyethylene LDPE - Low Density Polyethylene 17.000 18.000
LLDPE - Linear Low Density Polyethylene LLDPE - Linear Low Density Polyethylene 17.000 18.000
PA 11 30% Glass fiber reinforced Polyamide 11 30% Glass fiber reinforced 22.000 22.000
PA 11 conductive Polyamide 11 conductive 21.000 26.000
PA 11 flexible Polyamide 11 flexible 21.000 26.000
PA 11 rigid Polyamide 11 rigid 21.000 26.000
PA 12 conductive Polyamide 12 conductive 21.000 26.000
PA 12 fiber reinforced Polyamide 12 fiber reinforced 21.000 26.000
PA 12 flexible Polyamide 12 flexible 21.000 26.000
PA 12 glass filled Polyamide 12 glass filled 21.000 26.000
PA 12 rigid Polyamide 12 rigid 21.000 26.000
PA 46 Polyamide 46 24.000 24.000
PA 46 30% GF Polyamide 46 30% glass fiber 21.000 23.000
PA 6 Polyamide 6 23.000 26.000
PA 6-10 Polyamide 6-10 23.000 27.000
PA 66 Polyamide 6-6 21.000 27.000
PA 66 30% GF Polyamide 6-6 30% glass fiber 21.000 27.000
PA 66 impact modified Polyamide 6-6 impact modified 21.000 27.000
PA semi-aromatic Polyamide semi-aromatic 26.000 26.000
PAI Polyamide-Imide 44.000 45.000
PAI 30% GF Polyamide-Imide 30% glass fiber 50.000 50.000
PAR Polyarylate 26.000 30.000
PARA 30-60% GF Polyarylamide 30-60% glass fiber 25.000 25.000
PBT Polybutylene Terephthalate 20.000 24.000
PBT 30% GF Polybutylene Terephthalate 30% glass fiber 21.000 21.000
PC 20-40% GF Polycarbonate 20-40% glass fiber 30.000 34.000
PC 20-40% GF FR Polycarbonate 20-40% glass fiber flame retardant 35.000 40.000
PC high heat Polycarbonate high heat 24.000 35.000
PCTFE Polymonochlorotrifluoroethylene 90.000 95.000
PE 30% GF Polyethylene 30% glass fiber 17.000 19.000
PEEK Polyetheretherketone 24.000 35.000
PEEK 30% GF Polyetheretherketone 30% glass fiber 35.000 40.000
PEI Polyetherimide 46.000 47.000
PEI 30% GF Polyetherimide 30% glass fiber 50.000 50.000
PEI mineral filled Polyetherimide mineral filled 48.000 48.000
PEKK– Low cristallinity grade Polyetherketoneketone– Low cristallinity grade 40.000 40.000
PESU Polyethersulfone 34.000 38.000
PESU 10-30% GF Polyethersulfone 10-30% glass fiber 45.000 45.000
PET Polyethylene Terephtalate 23.000 25.000
PET 30% GF Polyethylene Terephtalate 30% glass fiber 21.000 23.000
PET 30/35% GF Impact modified Polyethylene Terephtalate 30/35% glass fiber impact modified 21.000 21.000
PET G Polyethylene Terephtalate Glycol 23.000 25.000
PE-UHMW Polyethylene -Ultra High Molecular Weight 17.000 18.000
PFA Perfluoroalkoxy 95.000 96.000
PI Polyimide 47.000 53.000
PMMA Polymethylmethacrylate (Acrylic) 19.000 20.000
PMMA high heat Polymethylmethacrylate (Acrylic) high heat 19.000 20.000
PMMA Impact modified Polymethylmethacrylate (Acrylic) impact modified 19.000 20.000
PMP Polymethylpentene 17.000 53.000
PMP 30% GF Polymethylpentene 30% glass fiber 17.000 18.000
PMP mineral filled Polymethylpentene mineral filled 17.000 18.000
POM Polyoxymethylene (acetal) 18.000 18.000
POM impact modified Polyoxymethylene (acetal) impact modified 18.000 18.000
PP 10-20% GF Polypropylene 10-20% glass fiber 17.000 18.000
PP 10-40% mineral filled Polypropylene 10-40% mineral filled 17.000 18.000
PP 10-40% TALC Polypropylene 10-40% talc 17.000 18.000
PP 30-40% GF Polypropylene 30-40% glass fiber 17.000 18.000
PP copo Polypropylene copolymer 17.000 18.000
PP homo Polypropylene homopolymer 17.000 18.000
PP impact modified Polypropylene impact modified 17.000 18.000
PPE Polyphenylene Ether 22.000 24.000
PPE 30% GF Polyphenylene Ether 30% glass fiber 24.000 26.000
PPE FR Polyphenylene Ether flame retardant 30.000 36.000
PPS Polyphenylene Sulfide 43.000 47.000
PPS 20-30% GF Polyphenylene Sulfide 20-30% glass fiber 43.000 49.000
PPS 40% GF Polyphenylene Sulfide 40% glass fiber 43.000 49.000
PPS GF & mineral Polyphenylene Sulfide glass fiber & mineral 45.000 53.000
PPSU Polyphenylene Sulfone 44.000 44.000
PS crystal Polystyrene crystal 17.000 18.000
PS high heat Polystyrene high heat 17.000 18.000
PSU Polysulfone 30.000 32.000
PSU 30% GF Polysulfone 30% glass fiber 36.000 36.000
PTFE Polytetrafluoroethylene 95.000 96.000
PTFE 25% GF Polytetrafluoroethylene 25% glass fiber 95.000 96.000
PVC 20% GF Polyvinyl Chloride 20% glass fiber 40.000 45.000
PVC plasticized Polyvinyl Chloride plasticized 20.000 40.000
PVC plasticized filled Polyvinyl Chloride plasticized filled 20.000 40.000
PVC rigid Polyvinyl Chloride rigid 40.000 45.000
PVDF Polyvinylidene Fluoride 44.000 83.000
SAN Styrene Acrylonitrile 18.000 19.500
SAN 20% GF Styrene Acrylonitrile 20% glass fiber 20.000 20.000
SRP Polyphenylene (Self reinforced) 49.000 55.000
TPI-PEEK Blend, Ultra-high heat, Chemical Resistant, High Flow, 240C UL RTI TPI-PEEK Blend, Ultra-high heat, Chemical Resistant, High Flow, 240C UL RTI 42.000 42.000
XLPE - Crosslinked Polyethylene XLPE - Crosslinked Polyethylene 17.000 18.000

Disclaimer: all data and information obtained via the Polymer Selector including but not limited to material suitability, material properties, performances, characteristics and cost are given for information purpose only. Although the data and information contained in the Polymer Selector are believed to be accurate and correspond to the best of our knowledge, they are provided without implied warranty of any kind. Data and information contained in the Polymer Selector are intended for guidance in a polymer selection process and should not be considered as binding specifications. The determination of the suitability of this information for any particular use is solely the responsibility of the user. Before working with any material, users should contact material suppliers in order to receive specific, complete and detailed information about the material they are considering. Part of the data and information contained in the Polymer Selector are genericised based on commercial literature provided by polymer suppliers and other parts are coming from assessments of our experts.

Copyright SpecialChem SA
Back to Top