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Technical Data Sheet
Eastman Tritan™ Copolyester VX351HF


Applications
  • Non-medical housings & hardware for elec
  • Ophthalmics
  • Safety glasses/shield
Key Attributes
  • Ease of processing
  • Excellent clarity
  • Excellent hydrolytic stability
  • Outstanding impact resistance
  • Quick cycle times
  • Superior chemical resistance

Product Description
Tritan VX351HF is an amorphous copolyester with excellent clarity and impact resistance. The outstanding chemical resistance, hydrolytic stability, and ease of processing make Tritan™ VX351HF an ideal candidate for a broad spectrum of optical applications such sunglass lenses, optical glass lenses and safety eyewear.

Typical Properties

PropertyaTest MethodbTypical Value, Unitsc
General Properties (ASTM Method)
Specific GravityD 7921.18
Mold ShrinkageD 9550.005-0.007 mm/mm (0.005-0.007 in./in.)
General Properties (ISO Method)
DensityISO 1183, Method D1.18 g/cm3
Mechanical Properties (ASTM Method)
Tensile Stress @ YieldD 63843 MPa (6200 psi)
Tensile Stress @ BreakD 63852 MPa (7500 psi)
Elongation @ YieldD 6387 %
Elongation @ BreakD 638210 %
Tensile ModulusD 6381575 MPa (2.28 x 105 psi)
Flexural ModulusD 7901575 MPa (2.28 x 105 psi)
Flexural Yield StrengthD 79064 MPa (9300 psi)
Rockwell Hardness, R ScaleD 785111
Izod Impact Strength, Notched 
     @ 23°C (73°F)D 256860 J/m (16.1 ft·lbf/in.)
     @ -40°C (-40°F)D 256110 J/m (2.1 ft·lbf/in.)
Impact Strength, Unnotched 
     @ 23°C (73°F)D 4812NB
     @ -40°C (-40°F)D 4812NB
Impact Resistance (Puncture), Energy @ Max. Load 
     @ 23°C (73°F)D 376353 J (39 ft·lbf)
     @ -40°C (-40°F)D 376357 J (42 ft·lbf)
Mechanical Properties (ISO Method)
Tensile Strength @ YieldISO 52743 MPa
Tensile Stress @ BreakISO 52753 MPa
Elongation @ YieldISO 5276 %
Elongation @ BreakISO 527160 %
Tensile ModulusISO 5271620 MPa
Flexural ModulusISO 5271590 MPa
Flexural Yield StrengthISO 17862 MPa
Izod Impact Strength, Notched 
     @ 23°CISO 18085 kJ/m2
     @ -40°CISO 18011 kJ/m2
Optical Properties (ASTM Method)
HazeD 1003<0.40 %
Total TransmittanceD 100391 %
Refractive IndexdC 16481.5651
ABBE NumberdC 164831.07
Thermal Properties (ASTM Method)
Deflection Temperature 
     @ 0.455 MPa (66 psi)D 64894 °C (201 °F)
     @ 1.82 MPa (264 psi)D 64881 °C (178 °F)
Typical Processing Conditions
Drying Temperature 88 °C (190 °F)
Drying Time 4-6 hrs
Processing Melt Temperature 260-282 °C (500-540 °F)
Mold Temperature 38-66 °C (100-150 °F)

aUnless noted otherwise, all tests are run at 23°C (73°F) and 50% relative humidity.
bUnless noted otherwise, the test method is ASTM.
cUnits are in SI or US customary units.
dMeasurements made on 5 mil extruded film.



Technical Disclaimer
Eastman makes no representation and disclaims any warranty that the material in any particular shipment will conform exactly to the values given.  Values as well as the performance of the final molded article may be affected by various factors such as the part design, mold design or tooling,  drying, processing conditions as well as coloring or pigmentation of the product. No warranty of merchantability or fitness for use is made, and nothing herein waives any of the Seller''s conditions of sale. You must make your own determination of the suitability of this product in your specific application due to the many factors (e.g. design, processing and conditions of use) that affect the performance of the final molded article.  Suitability of use should be evaluated with appropriate testing and analysis. The processing melt temperature and mold temperature refer to the actual resin melt temperature and actual mold surface temperature respectively. Consider overall resin residence time, part shot size utilization and part geometry to set appropriate processing melt temperature and mold temperature in order to minimize IV loss and maximize molded part performance.

Comments
Properties reported here are based on limited testing. Eastman makes no representation that the material in any particular shipment will conform exactly to the values given.


Eastman and its marketing affiliates shall not be responsible for the use of this information, or of any product, method, or apparatus mentioned, and you must make your own determination of its suitability and completeness for your own use, for the protection of the environment, and for the health and safety of your employees and purchasers of your products. No warranty is made of the merchantability of fitness of any product, and nothing herein waives any of the Seller's conditions of sale.


9/12/2019 11:55:15 AM