GENERAL DESCRIPTIONProteus ® LSG HS PP (heat-stabilized Polypropylene) sheet provides all of the outstanding properties found in standard polypropylene, but has been subjected to a special heat-stabilizing process. As a result, Proteus LSG is able to withstand higher service temperatures with less water absorption than standard polypropylene.
Proteus ® LSG HS PP exhibits a heat deflection temperature that allows the material to be used in repeated steam and autoclave sterilization cycles. It is highly resistant to cleaning agents, disinfectants and various solvents. Proteus LSG HS PP is FDA, USP Class VI, and ISO 10993 compliant Therefore, this material is an excellent material for surgical trays, caddies and instrument components.
The production process includes a special heat-treatment phase that allows for the higher heat deflection temperature and, thus, improved machinability and dimensional stability. Under the label of Quadrant’s Life Science Grades (LSG), Proteus ® LSG HS PP is tested and validated for biocompatibility per ISO10993-5 (on the stock shapes, closing the gap resin manufacturers leave). This offers the designer increased safety, approval facilitation, as well as reduced cost and time to market.
Proteus ® LSG HS PP is available in white and black colored sheets only. Contact us for size availability.
( see also Standard Polypropylene Specifications )
TYPICAL PROPERTIES of PROTEUS® LSG HS Polypropylene
|ASTM or UL test||Property||Standard Polypro
|Proteus® LSG HS PP|
|D570||Water Absorption, 24 hrs (%)||0.100||<0.01|
|D638||Tensile Strength @ yield (psi)||5,200||4,900|
|D638||Tensile Modulus (psi)||240,000||117,000|
|D638||Tensile Elongation at Yield (%)||23||8|
|D790||Flexural Strength (psi)||7,000||7,000|
|D790||Flexural Modulus (psi)||120,000||182,000|
|D695||Compressive Strength (psi)||6,000||3,500|
|D695||Compressive Modulus (psi)||-||214,000|
|D785||Hardness, Rockwell R||80||113|
|D256||IZOD Notched Impact (ft-lb/in)||0.7||0.5|
|D696||Coefficient of Linear Thermal Expansion
(x 10-5 in./in./°F)
|D648||Heat Deflection Temp (°F / °C)
at 66 psi
at 264 psi
210 / 99
130 / 54
>300 / >148
- / -
|D3418||Melting Temperature (°F / °C)||320 / 160||327 / 164|
|-||Max Operating Temp (°F / °C)||180 / 82||180 / 82|
(x 10-4 cal/cm-sec-°C)
|D149||Dielectric Strength (V/mil) short time, 1/8" thick||500-660||-|
|D150||Dielectric Constant at 1 kHz||2.25||-|
|D150||Dissipation Factor at 1 kHz||0.0005-0.0018||-|
|D257||Volume Resistivity (ohm-cm) at 50% RH||> 1014||> 1013|
|D495||Arc Resistance (sec)||160||-|
NOTE: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets.PROTEUS and LSG are registered trademarks of Quadrant EPP USA, Inc.
All values at 73°F (23°C) unless otherwise noted.