Sunday, 10 March 2019

Plastics Part Design: The Continuous Use Temperature of 124 Most Used Plastics



Hello and welcome to this blog post on the topic of continuous use temperature (CUT) of thermoplastics.

The maximum acceptable temperature for thermoplastics is one of the most critical requirements to be handled during your material selection. Above the maximum use temperature, mechanical properties (mainly tensile strength and impact strength) or electrical properties (dielectric strength) will drop significantly. On the other hand, long term retention of mechanical and other required properties over the product lifetime is crucial. Therefore, you need to be able to estimate your continuous use temperature.
Don’t worry; there are already methods out there which can assist you. There is the UL 746 which is used to calculate the Relative Temperature Index (RTI; measured in °C).

What is RTI?
Citation UL: “RTI is the temperature in °C, at which properties have decreased to 50% of their initial value after a long-term exposure to this temperature (100,000 hours)”.


The table below shows the maximum use temperature of 124 most used plastics and can assist you in your daily material selection.

Thank you for reading and till next time!
Herwig Juster


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Table: Continuous Use / Service Temperature of 124 most used Plastics


Polymer Name
Max Value (°C)
 according
UL 746 (RTI)
ABS - Acrylonitrile Butadiene Styrene
89.0
ABS Flame Retardant
95.0
ABS High Heat
110.0
ABS High Impact
100.0
ABS/PC Blend –
Acrylonitrile Butadiene Styrene/Polycarbonate Blend
110.0
ABS/PC Blend 20% Glass Fiber
110.0
ABS/PC Flame Retardant
110.0
ASA - Acrylonitrile Styrene Acrylate
90.0
ASA/PC Blend –
Acrylonitrile Styrene Acrylate/Polycarbonate Blend
110.0
ASA/PC Flame Retardant
110.0
ASA/PVC Blend –
Acrylonitrile Styrene Acrylate/Polyvinyl Chloride Blend
90.0
CA - Cellulose Acetate
95.0
CAB - Cellulose Acetate Butyrate
105.0
CP - Cellulose Proprionate
105.0
CPVC - Chlorinated Polyvinyl Chloride
100.0
ECTFE - Ethylene Chlorotrifluoroethylene
150.0
ETFE - Ethylene Tetrafluoroethylene
155.0
EVA - Ethylene Vinyl Acetate
70.0
EVOH - Ethylene Vinyl Alcohol
100.0
FEP - Fluorinated Ethylene Propylene
205.0
HDPE - High Density Polyethylene
120.0
HIPS - High Impact Polystyrene
80.0
HIPS Flame Retardant V0
80.0
Ionomer (Ethylene-Methyl Acrylate Copolymer)
48.0
LCP - Liquid Crystal Polymer
240.0
LCP Carbon Fiber-reinforced
240.0
LCP Glass Fiber-reinforced
240.0
LCP Mineral-filled
240.0
LDPE - Low Density Polyethylene
100.0
LLDPE - Linear Low Density Polyethylene
110.0
MABS - Transparent Acrylonitrile Butadiene Styrene
80.0
PA 46 - Polyamide 46
150.0
PA 46, 30% Glass Fiber
160.0
PA 6 - Polyamide 6
120.0
PA 6-10 - Polyamide 6-10
150.0
PA 66 - Polyamide 6-6
140.0
PA 66, 30% Glass Fiber
150.0
PA 66, 30% Mineral filled
140.0
PA 66, Impact Modified, 15-30% Glass Fiber
140.0
PA 66, Impact Modified
130.0
Polyamide semi-aromatic
135.0
PAI - Polyamide-Imide
280.0
PAI, 30% Glass Fiber
220.0
PAI, Low Friction
220.0
PAR - Polyarylate
130.0
PBT - Polybutylene Terephthalate
140.0
PBT, 30% Glass Fiber
140.0
PC (Polycarbonate) 20-40% Glass Fiber
125.0
PC (Polycarbonate) 20-40% Glass Fiber Flame Retardant
125.0
PC - Polycarbonate, high heat
140.0
PC/PBT Blend –
Polycarbonate/Polybutylene Terephthalate Blend
121.0
PC/PBT blend, Glass Filled
193.0
PCL - Polycaprolactone
45.0
PCTFE - Polymonochlorotrifluoroethylene
175.0
PE - Polyethylene 30% Glass Fiber
130.0
PEEK - Polyetheretherketone
260.0
PEEK 30% Carbon Fiber-reinforced
240.0
PEEK 30% Glass Fiber-reinforced
240.0
PEI - Polyetherimide
170.0
PEI, 30% Glass Fiber-reinforced
170.0
PEI, Mineral Filled
170.0
PESU - Polyethersulfone
180.0
PESU 10-30% glass fiber
180.0
PET - Polyethylene Terephtalate
140.0
PET, 30% Glass Fiber-reinforced
140.0
PET, 30/35% Glass Fiber-reinforced, Impact Modified
140.0
PETG - Polyethylene Terephtalate Glycol
63.0
PFA - Perfluoroalkoxy
260.0
PHB-V(5% valerate)
95.0
PI - Polyimide
360.0
PMMA - Polymethylmethacrylate/Acrylic
90.0
PMMA (Acrylic) High Heat
150.0
PMMA (Acrylic) Impact Modified
90.0
PMP - Polymethylpentene
110.0
PMP 30% Glass Fiber-reinforced
110.0
PMP Mineral Filled
110.0
POM - Polyoxymethylene (Acetal)
105.0
POM (Acetal) Impact Modified
100.0
POM (Acetal) Low Friction
105.0
POM (Acetal) Mineral Filled
105.0
PP - Polypropylene 10-20% Glass Fiber
130.0
PP, 10-40% Mineral Filled
130.0
PP, 10-40% Talc Filled
130.0
PP, 30-40% Glass Fiber-reinforced
130.0
PP (Polypropylene) Copolymer
130.0
PP (Polypropylene) Homopolymer
130.0
PP, Impact Modified
115.0
PPA - Polyphthalamide
140.0
PPA, 30% Mineral-filled
156.0
PPA, 33% Glass Fiber-reinforced
186.0
PPA, 45% Glass Fiber-reinforced
186.0
PPE - Polyphenylene Ether
110.0
PPE, 30% Glass Fiber-reinforced
110.0
PPE, Flame Retardant
110.0
PPE, Impact Modified
110.0
PPE, Mineral Filled
110.0
PPS - Polyphenylene Sulfide
220.0
PPS, 20-30% Glass Fiber-reinforced
220.0
PPS, 40% Glass Fiber-reinforced
220.0
PPS, Conductive
220.0
PPS, Glass fiber & Mineral-filled
220.0
PPSU - Polyphenylene Sulfone
210.0
PS (Polystyrene) 30% glass fiber
122.0
PS (Polystyrene) Crystal
80.0
PS, High Heat
90.0
PSU - Polysulfone
180.0
PSU, 30% Glass finer-reinforced
180.0
PSU Mineral Filled
150.0
PTFE - Polytetrafluoroethylene
290.0
PTFE, 25% Glass Fiber-reinforced
260.0
PVC (Polyvinyl Chloride), 20% Glass Fiber-reinforced
80.0
PVC, Plasticized
80.0
PVC, Plasticized Filled
80.0
PVC Rigid
80.0
PVDC - Polyvinylidene Chloride
90.0
PVDF - Polyvinylidene Fluoride
150.0
SAN - Styrene Acrylonitrile
95.0
SAN, 20% Glass Fiber-reinforced
95.0
SMA - Styrene Maleic Anhydride
100.0
SMA, 20% Glass Fiber-reinforced
100.0
SMA, Flame Retardant V0
100.0
SMMA - Styrene Methyl Methacrylate
100.0
UHMWPE - Ultra High Molecular Weight Polyethylene
130.0
XLPE - Crosslinked Polyethylene
82.0



Source:
1. https://omnexus.specialchem.com/
2. Saechtling Kunststoff Taschenbuch by Erwin Baur

3 comments:

  1. Replies
    1. Thanks! Glad to hear! best regards, Herwig Juster

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  2. Nice and fast overview. However , to judge relevance, it is important to understand the influence of time, too. RTI is a pretty longterm test, at least compared to many application cases. To be clear, I am not challenging the list, just want to pointout, that it is important to know the requirements to make a more targeted selection. Relying on this list, only, you might end up with quite an expensive material.

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