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Elmet Technologies

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Covestro DESMODUR® TD643 + MOCA, 90 A Polyurethane, TDI- Ester
Categories: Polymer; Thermoset; Polyurethane, TS

Material Notes:

Information provided by Covestro

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Physical PropertiesOriginal ValueComments
Specific Gravity 1.19 g/ccDESMODUR® TD643
 1.25 g/ccMOCA
 1.26 g/cc
Viscosity 2000 cPDESMODUR® TD643
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 90DIN 53505
 87
@Temperature 80.0 °C
DIN 53505
 95
@Temperature -5.00 °C
DIN 53505
Tensile Strength at Break 49.0 MPaDIN 53504
Tensile Stress at Strain 3.40 MPa
@Strain 10 %
DIN 53504
Elongation at Break 510 %DIN 53504
100% Modulus 0.00600 GPa
@Strain 100 %
DIN 53504
200% Modulus 0.00810 GPa
@Strain 200 %
DIN 53504
300% Modulus 0.0121 GPa
@Strain 300 %
DIN 53504
Resilience 29[%]; DIN 53512
Tear Strength 50.0 kN/mwith nick; ISO 34-1
 114 kN/mwithout nick; ISO 34-1
Abrasion 35[mm3]; ISO 4649
Compression Set 25 %
@Temperature 70.0 °C,
Time 79200 sec
ISO 815-1
 
Processing PropertiesOriginal ValueComments
Processing Temperature 80.0 °CDESMODUR® TD643
 120 °CMOCA
Mold Temperature 110 °C
Pot Life 5.00 min
 
Descriptive Properties
AppearancesolidDESMODUR® TD643
 solidMOCA
Content100Parts by weight of prepolymer
 13Parts by weight of MOCA
 4.1-4.5%NCO, DESMODUR® TD643

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PCOVEST0576 / 202359

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