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Product Name
Brand Name
Usages
Properties
Certificates
TPU 255 COVESTRO GERMANY
Desmopan® 
Engine parts,Automotive sector,Mechanical components,sporting goods,Cam,Hydraulic applications,wheel,Washer,Engine parts,packing
wear resistant,Antichemical,high strength
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Plastic Datasheets

hardnessTest ConditionTest MethodCOVESTRO GERMANY/255
Shore hardnessShoreDISO 86855
ShoreDASTM D224055
Supplementary InformationTest ConditionTest MethodCOVESTRO GERMANY/255
CompressiveLoad5%DeflectionASTM D5753.90 Mpa
15%DeflectionASTM D57510.1 Mpa
20%DeflectionASTM D57512.7 Mpa
2%DeflectionASTM D5750.965 Mpa
10%DeflectionASTM D5757.41 Mpa
50%DeflectionASTM D57540.6 Mpa
25%DeflectionASTM D57515.5 Mpa
thermal performanceTest ConditionTest MethodCOVESTRO GERMANY/255
Brittle temperatureISO 974<-68.0 °C
ASTM D746<-68.0 °C
Glass transition temperatureDMA-26.0 °C
Hot deformation temperature0.45MPa,UnannealedISO 75-2/B59.0 °C
0.45MPa,UnannealedASTM D64859.0 °C
Linear coefficient of thermal expansionMDASTM D6961.3E-04 cm/cm/°C
Vicat softening temperatureISO 306/50168 °C
ASTM D15255168 °C
mechanical propertiesTest ConditionTest MethodCOVESTRO GERMANY/255
Bending modulus70°CASTM D79051.7 Mpa
-30°CASTM D7901210 Mpa
-30°CISO 1781210 Mpa
23°CISO 17868.9 Mpa
70°CISO 17851.7 Mpa
23°CASTM D79068.9 Mpa
shear strengthASTM D73238.5 Mpa
Taber abraser1000Cycles,1000g,H-18WheelISO 464950.0 mg
1000Cycles,1000g,H-18WheelASTM D104450.0 mg
Physical propertiesTest ConditionTest MethodCOVESTRO GERMANY/255
Shrinkage rateMD：2.54mmASTM D9550.80 %
TD:2.54mmISO 25770.80 %
MD:2.54mmISO 25770.80 %
TD：2.54mmASTM D9550.80 %
impact performanceTest ConditionTest MethodCOVESTRO GERMANY/255
Dart impact23°C,2.54mm,TotalEnergyASTM D376357.8 J
-30°C,2.54mm,TotalEnergyASTM D376350.0 J
flammabilityTest ConditionTest MethodCOVESTRO GERMANY/255
UL flame retardant rating1.5mmUL 94HB
elastomerTest ConditionTest MethodCOVESTRO GERMANY/255
elongationBreakASTM D412500 %
BreakISO 37500 %
Permanent compression deformation70°C,22hr3ISO 81535 %
23°C,22hr3ASTM D395B15 %
70°C,22hr3ASTM D395B35 %
100°C,22hr3ISO 81550 %
23°C,22hr3ISO 81515 %
100°C,22hrASTM D395B75 %
23°C,22hrISO 81520 %
70°C,22hrISO 81565 %
70°C,22hrASTM D395B65 %
100°C,22hr3ASTM D395B50 %
23°C,22hrASTM D395B20 %
100°C,22hrISO 81575 %
Shore hardnessASTM D263240 %
tear strengthISO 34-1160 kN/m
ASTM D624158 kN/m
tensile strength300%StrainASTM D41232.4 Mpa
YieldASTM D41263.4 Mpa
50%StrainASTM D41212.4 Mpa
100%StrainASTM D41215.9 Mpa
YieldISO 3763.4 Mpa
100%StrainISO 3715.9 Mpa
300%StrainISO 3732.4 Mpa
50%StrainISO 3712.4 Mpa
agingTest ConditionTest MethodCOVESTRO GERMANY/255
Change rate of hardness (Shore) in the airShoreD,100°C,336hr,inASTM#1OilASTM D471-2.0
ShoreD,23°C,336hr,inReferenceFuelCASTM D471-6.0
ShoreD,23°C,504hr,inReferenceFuelCASTM D471-8.0
ShoreD,23°C,168hr,inReferenceFuelCASTM D471-4.0
ShoreD,100°C,504hr,inASTM#3OilASTM D471-1.0
ShoreD,100°C,70hr,inASTM#3OilASTM D4712.0
ShoreD,125°C,336hrASTM D573-5.0
ShoreD,125°C,336hrISO 216-5.0
ShoreD,23°C,168hr,inReferenceFuelA(Isooctane)ASTM D4711.0
ShoreD,100°C,336hrISO 2160.0
ShoreD,23°C,70hr,inReferenceFuelA(Isooctane)ASTM D471-4.0
ShoreD,100°C,70hrISO 216-2.0
ShoreD,100°C,504hr,inASTM#1OilASTM D4710.0
ShoreD,100°C,168hrASTM D573-1.0
ShoreD,100°C,168hr,inASTM#1OilASTM D4711.0
ShoreD,100°C,70hr,inASTM#1OilASTM D4712.0
ShoreD,23°C,504hr,inReferenceFuelA(Isooctane)ASTM D4716.0
支撐D,125°C,168hrISO 2160.0
ShoreD,100°C,168hrISO 216-1.0
ShoreD,100°C,504hrISO 2160.0
支撐D,125°C,168hrASTM D5730.0
ShoreD,125°C,504hrASTM D573-4.0
ShoreD,100°C,504hrASTM D5730.0
ShoreD,125°C,70hrISO 2161.0
ShoreD,125°C,504hrISO 216-4.0
ShoreD,23°C,70hr,inReferenceFuelCASTM D471-7.0
ShoreD,125°C,70hrASTM D5731.0
ShoreD,100°C,70hrASTM D573-2.0
ShoreD,100°C,336hrASTM D5730.0
ShoreD,23°C,336hr,inReferenceFuelA(Isooctane)ASTM D471-1.0
Change rate of tensile strength in air300%Strain,23°C,168hr,inReferenceFuelA(Isooctane)ASTM D471-11 %
100°C,70hrASTM D5733.0 %
23°C,70hr,inReferenceFuelA(Isooctane)ASTM D4716.0 %
100°C,70hr,在ASTM#1油中BTM 0011718 %
300%Strain,125°C,336hrASTM D573-27 %
300%Strain125°C,70hrISO 216-23 %
100%Strain,125°C,70hrASTM D5737.0 %
100%Strain100°C,504hrISO 21614 %
300%Strain,23°C,336hr,inReferenceFuelCASTM D471-35 %
100%Strain100°C,70hrISO 21611 %
100°C,336hrISO 21614 %
300%Strain,23°C,504hr,inReferenceFuelCASTM D471-28 %
100%Strain,100°C,70hr,inASTM#3OilASTM D47116 %
300%Strain,23°C,168hr,inReferenceFuelCASTM D471-34 %
300%Strain,100°C,168hr,inASTM#1OilBTM 001172.0 %
100%Strain,100°C,504hr,inASTM#1OilBTM 0011715 %
100°C,168hrASTM D5738.0 %
300%Strain100°C,504hrISO 2161.0 %
100%Strain,23°C,504hr,inReferenceFuelA(Isooctane)BTM 001175.0 %
300%Strain,125°C,504hrASTM D573-30 %
300%Strain,125°C,168hrASTM D573-15 %
100%Strain,125°C,336hrASTM D5738.0 %
125°C,504hrASTM D573-27 %
100°C,168hr,inASTM#1OilASTM D471-4.0 %
100°C,168hr,inASTM#1OilBTM 00117-4.0 %
300%Strain,23°C,336hr,inReferenceFuelA(Isooctane)BTM 00117-1.0 %
300%Strain,23°C,168hr,inReferenceFuelCBTM 00117-34 %
300%Strain,23°C,504hr,inReferenceFuelCBTM 00117-28 %
100%Strain,23°C,168hr,inReferenceFuelA(Isooctane)BTM 00117-2.0 %
100%Strain,100°C,336hrASTM D57313 %
100%Strain,100°C,70hrASTM D57311 %
125°C,70hrISO 216-20 %
100°C,336hrASTM D57314 %
300%Strain,100°C,336hr,inASTM#1OilASTM D471-9.0 %
300%Strain,23°C,336hr,inReferenceFuelCBTM 00117-35 %
23°C,336hr,inReferenceFuelCASTM D471-10 %
125°C,70hrASTM D573-20 %
23°C,504hr,inReferenceFuelCASTM D471-11 %
100°C,504hr,inASTM#3OilASTM D471-18 %
100%Strain100°C,336hrISO 21613 %
300%Strain,23°C,504hr,inReferenceFuelA(Isooctane)BTM 001173.0 %
100°C,336hr,inASTM#1OilASTM D471-20 %
100°C,504hrISO 21614 %
300%Strain100°C,70hrISO 2161.0 %
100%Strain,100°C,336hr,inASTM#1OilASTM D47114 %
300%Strain,100°C,70hr,inASTM#3OilBTM 0011713 %
300%Strain,100°C,168hrASTM D573-5.0 %
23°C,504hr,inReferenceFuelA(Isooctane)BTM 00117-1.0 %
300%Strain,23°C,336hr,inReferenceFuelA(Isooctane)ASTM D471-1.0 %
300%Strain,100°C,70hr,inASTM#1OilASTM D4717.0 %
100%Strain,23°C,504hr,inReferenceFuelA(Isooctane)ASTM D4715.0 %
100%Strain,100°C,70hr,inASTM#1OilBTM 0011712 %
100%Strain,100°C,168hrASTM D5734.0 %
100%Strain,100°C,168hr,inASTM#1OilBTM 0011714 %
300%Strain,23°C,70hr,inReferenceFuelCBTM 00117-22 %
300%Strain,100°C,504hr,inASTM#1OilBTM 00117-14 %
23°C,168hr,inReferenceFuelA(Isooctane)BTM 00117-3.0 %
23°C,168hr,甲醇BTM 00117-4.0 %
100°C,70hrISO 2163.0 %
23°C,168hr,inReferenceFuelA(Isooctane)ASTM D471-3.0 %
300%Strain100°C,336hrISO 216-1.0 %
100%Strain,125°C,504hrASTM D5734.0 %
100%Strain,23°C,70hr,inReferenceFuelA(Isooctane)ASTM D4712.0 %
100°C,70hr,在ASTM#3油中ASTM D47119 %
23°C,70hr,甲醇BTM 001171.0 %
100°C,504hr,inASTM#1OilBTM 00117-29 %
125°C,168hrISO 216-11 %
100%Strain,100°C,70hr,inASTM#3OilBTM 0011716 %
300%Strain,100°C,504hrASTM D5731.0 %
23°C,70hr,inReferenceFuelA(Isooctane)BTM 001176.0 %
100%Strain,23°C,336hr,inReferenceFuelA(Isooctane)BTM 001173.0 %
300%Strain125°C,504hrISO 216-30 %
100%Strain,100°C,504hr,inASTM#3OilBTM 001172.0 %
300%Strain,100°C,504hr,inASTM#3OilBTM 00117-12 %
100%Strain125°C,336hrISO 2168.0 %
100°C,504hr,inASTM#3OilBTM 00117-18 %
100%Strain,23°C,504hr,inReferenceFuelCBTM 00117-27 %
100%Strain,23°C,168hr,inReferenceFuelCBTM 00117-27 %
100%Strain,23°C,336hr,inReferenceFuelCBTM 00117-32 %
23°C,504hr,inReferenceFuelA(Isooctane)ASTM D471-1.0 %
100%Strain,23°C,168hr,inReferenceFuelCASTM D471-27 %
100%Strain,23°C,336hr,inReferenceFuelCASTM D471-32 %
300%Strain,100°C,504hr,inASTM#3OilASTM D471-12 %
100°C,504hrASTM D57314 %
300%Strain,100°C,336hrASTM D573-1.0 %
100%Strain,23°C,504hr,inReferenceFuelCASTM D471-27 %
100%Strain125°C,168hrISO 216-2.0 %
100%Strain125°C,504hrISO 2164.0 %
100%Strain,100°C,336hr,inASTM#1OilBTM 0011714 %
300%Strain,23°C,70hr,inReferenceFuelA(Isooctane)ASTM D4715.0 %
300%Strain,23°C,70hr,inReferenceFuelCASTM D471-22 %
300%Strain,100°C,70hrASTM D5731.0 %
300%Strain100°C,168hrISO 216-5.0 %
300%Strain,23°C,70hr,inReferenceFuelA(Isooctane)BTM 001175.0 %
125°C,336hrISO 216-23 %
100%Strain,100°C,70hr,inASTM#1OilASTM D47112 %
100°C,70hr,在ASTM#1油中ASTM D47118 %
100%Strain,100°C,504hr,inASTM#1OilASTM D47115 %
300%Strain,100°C,70hr,inASTM#1OilBTM 001177.0 %
100%Strain,23°C,168hr,inReferenceFuelA(Isooctane)ASTM D471-2.0 %
100%Strain,23°C,70hr,inReferenceFuelCBTM 00117-19 %
300%Strain125°C,168hrISO 216-15 %
300%Strain,100°C,70hr,inASTM#3OilASTM D47113 %
100°C,70hr,在ASTM#3油中BTM 0011719 %
300%Strain,100°C,168hr,inASTM#1OilASTM D4712.0 %
23°C,336hr,inReferenceFuelCBTM 00117-10 %
23°C,504hr,inReferenceFuelCBTM 00117-11 %
100%Strain,125°C,168hrASTM D573-2.0 %
100%Strain125°C,70hrISO 2167.0 %
100%Strain,100°C,168hr,inASTM#1OilASTM D47114 %
125°C,168hrASTM D573-11 %
100%Strain,23°C,336hr,inReferenceFuelA(Isooctane)ASTM D4713.0 %
100%Strain,23°C,70hr,inReferenceFuelCASTM D471-19 %
300%Strain,23°C,168hr,inReferenceFuelA(Isooctane)BTM 00117-11 %
100%Strain100°C,168hrISO 2164.0 %
100%Strain,100°C,504hr,inASTM#3OilASTM D4712.0 %
100°C,336hr,inASTM#1OilBTM 00117-20 %
23°C,168hr,甲醇ASTM D471-4.0 %
100%Strain,23°C,70hr,inReferenceFuelA(Isooctane)BTM 001172.0 %
300%Strain125°C,336hrISO 216-27 %
300%Strain,125°C,70hrASTM D573-23 %
100°C,168hrISO 2168.0 %
100%Strain,100°C,504hrASTM D57314 %
300%Strain,100°C,336hr,inASTM#1OilBTM 00117-9.0 %
23°C,336hr,inReferenceFuelA(Isooctane)ASTM D4716.0 %
100°C,504hr,inASTM#1OilASTM D471-29 %
23°C,336hr,inReferenceFuelA(Isooctane)BTM 001176.0 %
125°C,336hrASTM D573-23 %
300%Strain,23°C,504hr,inReferenceFuelA(Isooctane)ASTM D4713.0 %
23°C,70hr,甲醇ASTM D4711.0 %
300%Strain,100°C,504hr,inASTM#1OilASTM D471-14 %
125°C,504hrISO 216-27 %
Change rate of ultimate elongation in air100°C,336hr,inASTM#1OilASTM D47124 %
23°C,168hr,inReferenceFuelA(Isooctane)ASTM D4719.0 %
125°C,168hrASTM D57324 %
23°C,168hr,甲醇ASTM D4716.0 %
23°C,336hr,inReferenceFuelA(Isooctane)ASTM D471-4.0 %
23°C,504hr,inReferenceFuelCASTM D471-8.0 %
100°C,504hr,inASTM#3OilASTM D47120 %
23°C,336hr,inReferenceFuelCASTM D471-2.0 %
23°C,70hr,inReferenceFuelA(Isooctane)ASTM D471-4.0 %
125°C,336hrASTM D57335 %
100°C,70hr,在ASTM#3油中ASTM D4716.0 %
125°C,504hrASTM D57330 %
100°C,504hr,inASTM#1OilASTM D47116 %
100°C,168hr,inASTM#1OilASTM D47112 %
100°C,168hrASTM D5737.0 %
100°C,70hr,在ASTM#1油中ASTM D4718.0 %
125°C,70hrASTM D57328 %
100°C,336hrASTM D57314 %
100°C,504hrASTM D57315 %
23°C,504hr,inReferenceFuelA(Isooctane)ASTM D471-2.0 %
100°C,70hrASTM D573-3.0 %
23°C,70hr,甲醇ASTM D4715.0 %
Shore hardnessShoreD,23°C,168hr,inReferenceFuelA(Isooctane)BTM 001171.0
ShoreD,100°C,504hr,inASTM#1OilBTM 001170.0
ShoreD,100°C,70hr,inASTM#1OilBTM 001172.0
ShoreD,100°C,168hr,inASTM#1OilBTM 001171.0
ShoreD,23°C,504hr,inReferenceFuelCBTM 00117-8.0
ShoreD,23°C,336hr,inReferenceFuelCBTM 00117-6.0
ShoreD,23°C,168hr,inReferenceFuelCBTM 00117-4.0
ShoreD,23°C,70hr,inReferenceFuelCBTM 00117-7.0
ShoreD,100°C,336hr,inASTM#1OilBTM 00117-2.0
ShoreD,23°C,504hr,inReferenceFuelA(Isooctane)BTM 001176.0
ShoreD,23°C,70hr,inReferenceFuelA(Isooctane)BTM 00117-4.0
ShoreD,100°C,70hr,inASTM#3OilBTM 001172.0
ShoreD,23°C,336hr,inReferenceFuelA(Isooctane)BTM 00117-1.0
ShoreD,100°C,504hr,inASTM#3OilBTM 00117-1.0
Tensile stress change rate23°C,504hr,inReferenceFuelA(Isooctane)，BreakBTM 00117-2.0 %
100°C,504hr,inASTM#3Oil，BreakBTM 0011720 %
100°C,168hr,inASTM#1Oil，BreakBTM 0011712 %
23°C,168hr,inReferenceFuelA(Isooctane)，BreakBTM 001179.0 %
100°C,504hr，BreakISO 21615 %
23°C,168hr,甲醇，BreakBTM 001176.0 %
23°C,70hr,inReferenceFuelA(Isooctane)，BreakBTM 00117-4.0 %
23°C,336hr,inReferenceFuelC，BreakBTM 00117-2.0 %
23°C,70hr,甲醇，BreakBTM 001175.0 %
100°C,336hr,inASTM#1Oil，BreakBTM 0011724 %
125°C,168hr，BreakISO 21624 %
100°C,70hr,在ASTM#3油中，BreakBTM 001176.0 %
23°C,504hr,inReferenceFuelC，BreakBTM 00117-8.0 %
125°C,336hr，BreakISO 21635 %
100°C,168hr，BreakISO 2167.0 %
100°C,70hr,在ASTM#1油中，BreakBTM 001178.0 %
100°C,70hr，BreakISO 216-3.0 %
100°C,504hr,inASTM#1Oil，BreakBTM 0011716 %
100°C,336hr，BreakISO 21614 %
23°C,336hr,inReferenceFuelA(Isooctane)，BreakBTM 00117-4.0 %
125°C,70hr，BreakISO 21628 %
125°C,504hr，BreakISO 21630 %
Volume change23°C,336hr,inReferenceFuelCBTM 0011714 %
23°C,336hr,inReferenceFuelABTM 001170.0 %
100°C,336hr,inASTM#1OilBTM 00117-1.0 %
23°C,504hr,inReferenceFuelABTM 001170.0 %
23°C,504hr,inReferenceFuelCBTM 0011714 %
23°C,168hr,甲醇ASTM D47110 %
23°C,70hr,inReferenceFuelABTM 001170.0 %
23°C,70hr,inReferenceFuelAASTM D4710.0 %
100°C,168hr,inASTM#1OilASTM D4710.0 %
100°C,504hr,inASTM#3OilBTM 001174.0 %
23°C,70hr,甲醇ASTM D4716.0 %
100°C,70hr,在ASTM#3油中ASTM D4712.0 %
23°C,168hr,inReferenceFuelABTM 001170.0 %
100°C,504hr,inASTM#1OilASTM D471-1.0 %
23°C,504hr,inReferenceFuelCASTM D47114 %
23°C,336hr,inReferenceFuelCASTM D47114 %
23°C,168hr,inReferenceFuelAASTM D4710.0 %
23°C,336hr,inReferenceFuelAASTM D4710.0 %
100°C,70hr,在ASTM#1油中BTM 00117-1.0 %
23°C,504hr,inReferenceFuelAASTM D4710.0 %
100°C,504hr,inASTM#3OilASTM D4714.0 %
100°C,504hr,inASTM#1OilBTM 00117-1.0 %
100°C,168hr,inASTM#1OilBTM 001170.0 %
100°C,336hr,inASTM#1OilASTM D471-1.0 %
23°C,70hr,甲醇BTM 001176.0 %
100°C,70hr,在ASTM#3油中BTM 001172.0 %
23°C,168hr,甲醇BTM 0011710 %
100°C,70hr,在ASTM#1油中ASTM D471-1.0 %

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