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Technical Data Sheet
Eastman Tritan™ Copolyester MX731


Applications
  • Blood contact and dialysis
  • Blood tubes
  • Fluid administration
  • Medical devices
  • Medical equipment
  • Medical labware
Key Attributes
  • Excellent clarity
  • Excellent hydrolytic stability
  • Fast cycle times
  • Fast drying times
  • Good chemical resistance
  • Good color stability upon ETO sterilization
  • Good color stability upon gamma sterilization
  • Good heat resistance
  • Good melt flowability
  • Good toughness
  • Improved processability over traditional copolyesters

Product Description
Eastman Tritan™ Copolyester MX731 is an amorphous product with excellent appearance and clarity. Eastman Tritan™ Copolyester MX731 is a high flow medical grade of Eastman Tritan™ that has viscosity reductions of 40-50% relative to Eastman Tritan™ Copolyester MX711. Eastman Tritan™ Copolyester MX731 contains a mold release derived from vegetable based sources. Eastman Tritan™ Copolyester MX731 has many outstanding features that include excellent toughness, hydrolytic stability, heat resistance, chemical resistance, and melt flowability. Eastman Tritan™ Copolyester MX731 has been formulated for medical devices. Eastman Tritan™ Copolyester MX731 has been tested for FDA/ISO 10993 and USP Class VI Biological Evaluation testing after Gamma and ETO sterilization.

Typical Properties

PropertyaTest MethodbTypical Value, Unitsc
General Properties
Specific GravityD 7921.18
Mold ShrinkageD 9550.005-0.007 mm/mm (0.005-0.007 in./in.)
Mechanical Properties (ISO Method)
Tensile Strength @ YieldISO 52744 MPa
Tensile Strength @ BreakISO 52749 MPa
Elongation @ YieldISO 5277 %
Elongation @ BreakISO 527154 %
Tensile ModulusISO 5271604 MPa
Flexural ModulusISO 1781502 MPa
Flexural StrengthISO 17860 MPa
Izod Impact Strength, Notched 
     @ 23°CISO 18083 kJ/m2
     @ -40°CISO 18011 kJ/m2
Mechanical Properties
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.)
Impact Strength, Unnotched 
     @ 23°C (73°F)D 4812NB
Optical Properties
Total TransmittanceD 100391 %
HazeD 1003<1 %
Thermal Properties
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.


Eastman Medical Disclaimer
It is the responsibility of the medical device manufacturer ("Manufacturer") to determine the suitability of all component parts and raw materials, including any Eastman product, used in its final product in order to ensure safety and compliance with requirements of the United States Food and Drug Administration (FDA) or other international regulatory agencies. Eastman products have not been designed for nor are they promoted for end uses that would be categorized by either the United States FDA or by the International Standards Organization (ISO) as implant devices. Eastman products are not intended for use in the following applications: (1) in any bodily implant applications for greater than 30 days, based on FDA-Modified ISO-10993, Part 1 "Biological Evaluation of Medical Devices" tests (including any cosmetic, reconstructive or reproductive implant applications); (2) in any cardiac prosthetic device application, regardless of the length of time involved, including, without limitation, pacemaker leads and devices, artificial hearts, heart valves, intra-aortic balloons and control systems, and ventricular bypass assisted devices, or (3) as any critical component in any medical device that supports or sustains human life. For manufacturers of medical devices, biological evaluation of medical devices is performed to determine the potential toxicity resulting from contact of the component materials of the device with the body. Tests are defined in FDA-Modified ISO-10993, Part 1 ''''Biological Evaluation of Medical Devices''''. Limited testing information for certain Eastman products is available upon request. The Manufacturer of the medical device is responsible for the biological evaluation of the finished medical device. The suitability of an Eastman product in a given end-use environment is dependent upon various conditions including, without limitation, chemical compatibility, temperature, part design, sterilization method, residual stresses, and external loads. It is the responsibility of the Manufacturer to evaluate its final product under actual end-use requirements and to adequately advise and warn purchasers and users thereof.

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.


1/22/2019 1:48:53 PM