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Texin® 255

Category: TPU-Polyester , Thermoplastic Polyurethane Elastomer (Polyester)
Manufacturer: Covestro - PUR
Trademark: Texin®
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: 6lc737_Texin-255.pdf
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Texin 255 resin is a polyester-based thermoplastic polyurethane with a Shore hardness of approximately 55D. It can be processed by injection molding;extrusion processes are not recommended.
General Information
Features
  • Impact resistance, good
  • Good flexibility
  • Good wear resistance
  • Fuel resistance
  • Oil resistance
  • Good toughness
  • Compliance of Food Exposure
Uses
  • Wheels
  • Gear
  • Washer
  • Seals
Agency Ratings
  • FDA 21 CFR 177.1680
  • FDA 21 CFR 177.2600
Appearance
  • Natural color
Processing Method
  • Injection molding
PhysicalNominal ValueUnitTest Method
Specific Gravity 1.21g/cm³ASTM D792, ISO 1183
Molding Shrinkage
    Flow : 2.54mm 0.80%ASTM D955
    Transverse flow : 2.54mm 0.80%ASTM D955
    Vertical flow direction : 2.54mm 0.80%ISO 2577
    Flow direction : 2.54mm 0.80%ISO 2577
HardnessNominal ValueUnitTest Method
Durometer Hardness (Shore D)55ASTM D2240, ISO 868
MechanicalNominal ValueUnitTest Method
Flexural Modulus ASTM D790, ISO 178
    -30°C 1210MPaASTM D790, ISO 178
    23°C 68.9MPaASTM D790, ISO 178
    70°C 51.7MPaASTM D790, ISO 178
Shear Strength 38.5MPaASTM D732
Taber Abrasion Resistance
    1000 Cycles, 1000g, H-18 wheel 50.0mgISO 4649
    1000 Cycles, 1000g, H-18 wheel 50.0mgASTM D1044
ElastomersNominal ValueUnitTest Method
Tensile Stress
    50% strain 12.4MPaISO 37, ASTM D412
    100% strain 15.9MPaASTM D412, ISO 37
    300% strain 32.4MPaASTM D412, ISO 37
Tensile Strength (Yield)63.4MPaASTM D412, ISO 37
Tensile Elongation (Break)500%ASTM D412, ISO 37
Tear Strength
    -- 1158kN/mASTM D624
    -- 160kN/mISO 34-1
Compression Set ASTM D395B, ISO 815
    23°C, 22 hr 215%ASTM D395B, ISO 815
    23°C, 22 hr 20%ASTM D395B, ISO 815
    70°C, 22 hr 335%ASTM D395B, ISO 815
    70°C, 22 hr 65%ASTM D395B, ISO 815
    100°C, 22 hr 450%ASTM D395B, ISO 815
    100°C, 22 hr 75%ASTM D395B, ISO 815
Bayshore Resilience 40%ASTM D2632
ImpactNominal ValueUnitTest Method
Instrumented Dart Impact 5ASTM D3763
    -30°C, 2.54 mm, Total Energy 50.0JASTM D3763
    23°C, 2.54 mm, Total Energy 57.8JASTM D3763
AgingNominal ValueUnitTest Method
Change in Tensile Strength in Air
    100°C, 70 hr 3.0%ASTM D573, ISO 216
    100% strain, 100°C, 70 hr 11%ASTM D573
    300% strain, 100°C, 70 hr 1.0%ASTM D573
    100°C, 168 hr 8.0%ASTM D573, ISO 216
    100% strain, 100°C, 168 hr 4.0%ASTM D573
    300% strain, 100°C, 168 hr -5.0%ASTM D573
    100°C, 336 hr 14%ASTM D573, ISO 216
    100% strain, 100°C, 336 hr 13%ASTM D573
    300% strain, 100°C, 336 hr -1.0%ASTM D573
    100°C, 504 hr 14%ASTM D573, ISO 216
    100% strain, 100°C, 504 hr 14%ASTM D573
    300% strain, 100°C, 504 hr 1.0%ASTM D573
    125°C, 70 hr -20%ASTM D573, ISO 216
    100% strain, 125°C, 70 hr 7.0%ASTM D573
    300% strain, 125°C, 70 hr -23%ASTM D573
    125°C, 168 hr -11%ASTM D573, ISO 216
    100% strain, 125°C, 168 hr -2.0%ASTM D573
    300% strain, 125°C, 168 hr -15%ASTM D573
    125°C, 336 hr -23%ASTM D573, ISO 216
    100% strain, 125°C, 336 hr 8.0%ASTM D573
    300% strain, 125°C, 336 hr -27%ASTM D573
    125°C, 504 hr -27%ASTM D573, ISO 216
    100% strain, 125°C, 504 hr 4.0%ASTM D573
    300% strain, 125°C, 504 hr -30%ASTM D573
    100% strain 100°C, 70 hr 11%ISO 216
    300% strain 100°C, 70 hr 1.0%ISO 216
    100% strain 100°C, 168 hr 4.0%ISO 216
    300% strain 100°C, 168 hr -5.0%ISO 216
    100% strain 100°C, 336 hr 13%ISO 216
    300% strain 100°C, 336 hr -1.0%ISO 216
    100% strain 100 c, 504 hr 14%ISO 216
    300% strain 100 c, 504 hr 1.0%ISO 216
    100% strain 125°C, 70 hr 7.0%ISO 216
    300% strain 125°C, 70 hr -23%ISO 216
    100% strain 125°C, 168 hr -2.0%ISO 216
    300% strain 125°C, 168 hr -15%ISO 216
    100% strain 125°C, 336 hr 8.0%ISO 216
    300% strain 125°C, 336 hr -27%ISO 216
    100% strain 125 c, 504 hr 4.0%ISO 216
    300% strain 125 c, 504 hr -30%ISO 216
Change in Ultimate Elongation in Air ASTM D573, ISO 216
    100°C, 70 hr -3.0%ASTM D573, ISO 216
    100°C, 168 hr 7.0%ASTM D573, ISO 216
    100°C, 336 hr 14%ASTM D573, ISO 216
    100°C, 504 hr 15%ASTM D573, ISO 216
    125°C, 70 hr 28%ASTM D573, ISO 216
    125°C, 168 hr 24%ASTM D573, ISO 216
    125°C, 336 hr 35%ASTM D573, ISO 216
    125°C, 504 hr 30%ASTM D573, ISO 216
Change in Durometer Hardness in Air ASTM D573, ISO 216
    Support d, 100°C, 70 hr -2.0ASTM D573, ISO 216
    Support d, 100°C, 168 hr -1.0ASTM D573, ISO 216
    Support d, 100 c, 336 hr 0.0ASTM D573, ISO 216
    Support d, 100 c, 504 hr 0.0ASTM D573, ISO 216
    Support d, 125°C, 70 hr 1.0ASTM D573, ISO 216
    Support d, 125°C, 168 hr 0.0ASTM D573, ISO 216
    Support d, 125 c, 336 hr -5.0ASTM D573, ISO 216
    Support d, 125 c, 504 hr -4.0ASTM D573, ISO 216
Change in Tensile Strength
    23°C, 70 hr, Class C Standard Fuel 1.0%ASTM D471
    100% strain, 23°C, 70 hr, Class C standard fuel -19%ASTM D471
    300% strain, 23°C, 70 hr, Class C standard fuel -22%ASTM D471
    23°C, 70 hr, in reference fuel A 6.0%ASTM D471
    100% strain, 23°C, 70 hr, in reference fuel A 2.0%ASTM D471
    300% strain, 23°C, 70 hr, in reference fuel A 5.0%ASTM D471
    23°C, 168 hr, Class C Standard Fuel -4.0%ASTM D471
    100% strain, 23°C, 168 hr, Class C standard fuel -27%ASTM D471
    300% strain, 23°C, 168 hr, Class C standard fuel -34%ASTM D471
    23°C, 168 hr, in reference fuel A -3.0%ASTM D471
    100% strain, 23°C, 168 hr, in reference fuel a -2.0%ASTM D471
    300% strain, 23°C, 168 hr, in reference fuel a -11%ASTM D471
    23°C, 336 hr, Class C Standard Fuel -10%ASTM D471
    100% strain, 23°C, 336 hr, Class C standard fuel -32%ASTM D471
    300% strain, 23°C, 336 hr, Class C standard fuel -35%ASTM D471
    23°C, 336 hr, in reference fuel A 6.0%ASTM D471
    100% strain, 23°C, 336 hr, in reference fuel A 3.0%ASTM D471
    300% strain, 23°C, 336 hr, in reference fuel A -1.0%ASTM D471
    23°C, 504 hr, Class C Standard Fuel -11%ASTM D471
    100% strain, 23°C, 504 hr, Class C standard fuel -27%ASTM D471
    300% strain, 23°C, 504 hr, Class C standard fuel -28%ASTM D471
    23°C, 504 hr, in reference fuel A -1.0%ASTM D471
    100% strain, 23°C, 504 hr, in reference fuel A 5.0%ASTM D471
    300% strain, 23°C, 504 hr, in reference fuel A 3.0%ASTM D471
    100°C, 70 hr, in ASTM #1 oil 18%ASTM D471, ISO 175
    100% strain, 100°C, 70 hr, in ASTM #1 oil 12%ASTM D471, ISO 175
    300% strain, 100°C, 70 hr, in ASTM #1 oil 7.0%ASTM D471, ISO 175
    100°C, 70 hr, in ASTM #3 oil 19%ASTM D471, ISO 175
    100% strain, 100°C, 70 hr, in ASTM #3 oil 16%ASTM D471, ISO 175
    300% strain, 100°C, 70 hr, in ASTM #3 oil 13%ASTM D471, ISO 175
    100°C, 168 hr, in ASTM #1 oil -4.0%ASTM D471, ISO 175
    100% strain, 100°C, 168 hr, in ASTM #1 oil 14%ASTM D471, ISO 175
    300% strain, 100°C, 168 hr, in ASTM #1 oil 2.0%ASTM D471, ISO 175
    100°C, 336 hr, in ASTM #1 oil -20%ASTM D471, ISO 175
    100% strain, 100°C, 336 hr, in ASTM #1 oil 14%ASTM D471, ISO 175
    300% strain, 100°C, 336 hr, in ASTM #1 oil -9.0%ASTM D471, ISO 175
    100°C, 504 hr, in ASTM #1 oil -29%ASTM D471, ISO 175
    100% strain, 100°C, 504 hr, in ASTM #1 oil 15%ASTM D471, ISO 175
    300% strain, 100°C, 504 hr, in ASTM #1 oil -14%ASTM D471, ISO 175
    100°C, 504 hr, in ASTM #3 oil -18%ASTM D471, ISO 175
    100% strain, 100°C, 504 hr, in ASTM #3 oil 2.0%ASTM D471, ISO 175
    300% strain, 100°C, 504 hr, in ASTM #3 oil -12%ASTM D471, ISO 175
    23°C, 70 hr, in Reference Fuel C 1.0%ISO 175
    100% strain, 23 c, 70 hr, in Reference Fuel C -19%ISO 175
    300% strain, 23 c, 70 hr, in Reference Fuel C -22%ISO 175
    23°C, 70 hr, in reference fuel A (isooctane) 6.0%ISO 175
    100% strain, 23°C, 70 hr, in reference fuel A (isooctane) 2.0%ISO 175
    300% strain, 23°C, 70 hr, in reference fuel A (isooctane) 5.0%ISO 175
    23°C, 168 hr, in Reference Fuel C -4.0%ISO 175
    100% strain, 23 c, 168 hr, in Reference Fuel C -27%ISO 175
    300% strain, 23 c, 168 hr, in Reference Fuel C -34%ISO 175
    23°C, 168 hr, in reference fuel A (isooctane) -3.0%ISO 175
    100% strain, 23°C, 168 hr, in reference fuel A (isooctane) -2.0%ISO 175
    300% strain, 23°C, 168 hr, in reference fuel A (isooctane) -11%ISO 175
    23°C, 336 hr, in Reference Fuel C -10%ISO 175
    100% strain, 23 c, 336 hr, in Reference Fuel C -32%ISO 175
    300% strain, 23 c, 336 hr, in Reference Fuel C -35%ISO 175
    23°C, 336 hr, in reference fuel A (isooctane) 6.0%ISO 175
    100% strain, 23°C, 336 hr, in reference fuel A (isooctane) 3.0%ISO 175
    300% strain, 23°C, 336 hr, in reference fuel A (isooctane) -1.0%ISO 175
    23°C, 504 hr, in Reference Fuel C -11%ISO 175
    100% strain, 23 c, 504 hr, in Reference Fuel C -27%ISO 175
    300% strain, 23 c, 504 hr, in Reference Fuel C -28%ISO 175
    23°C, 504 hr, in reference fuel A (isooctane) -1.0%ISO 175
    100% strain, 23°C, 504 hr, in reference fuel A (isooctane) 5.0%ISO 175
    300% strain, 23°C, 504 hr, in reference fuel A (isooctane) 3.0%ISO 175
Change in Ultimate Elongation
    23°C, 70 hr, Class C Standard Fuel 5.0%ASTM D471
    23°C, 70 hr, in reference fuel A -4.0%ASTM D471
    23°C, 168 hr, Class C Standard Fuel 6.0%ASTM D471
    23°C, 168 hr, in reference fuel A 9.0%ASTM D471
    23°C, 336 hr, Class C Standard Fuel -2.0%ASTM D471
    23°C, 336 hr, in reference fuel A -4.0%ASTM D471
    23°C, 504 hr, Class C Standard Fuel -8.0%ASTM D471
    23°C, 504 hr, in reference fuel A -2.0%ASTM D471
    100°C, 70 hr, in ASTM #1 oil 8.0%ASTM D471, ISO 175
    100°C, 70 hr, in ASTM #3 oil 6.0%ASTM D471, ISO 175
    100°C, 168 hr, in ASTM #1 oil 12%ASTM D471, ISO 175
    100°C, 336 hr, in ASTM #1 oil 24%ASTM D471, ISO 175
    100°C, 504 hr, in ASTM #1 oil 16%ASTM D471, ISO 175
    100°C, 504 hr, in ASTM #3 oil 20%ASTM D471, ISO 175
    23°C, 70 hr, in Reference Fuel C 5.0%ISO 175
    23°C, 70 hr, in reference fuel A (isooctane) -4.0%ISO 175
    23°C, 168 hr, in Reference Fuel C 6.0%ISO 175
    23°C, 168 hr, in reference fuel A (isooctane) 9.0%ISO 175
    23°C, 336 hr, in Reference Fuel C -2.0%ISO 175
    23°C, 336 hr, in reference fuel A (isooctane) -4.0%ISO 175
    23°C, 504 hr, in Reference Fuel C -8.0%ISO 175
    23°C, 504 hr, in reference fuel A (isooctane) -2.0%ISO 175
Change in Durometer Hardness
    Support D, 23°C, 70 hr, in Reference Fuel C -7.0ASTM D471, ISO 175
    Support D, 23°C, 70 hr, in reference fuel A -4.0ASTM D471
    Support D, 23°C, 168 hr, in Reference Fuel C -4.0ASTM D471, ISO 175
    Support D, 23°C, 168 hr, in reference fuel A 1.0ASTM D471
    Support d, 23 c, 336 hr, in Reference fuel c -6.0ASTM D471, ISO 175
    Support D, 23°C, 336 hr, in reference fuel A -1.0ASTM D471
    Support D, 23°C, 504 hr, in Reference Fuel C -8.0ASTM D471, ISO 175
    Support D, 23°C, 504 hr, in reference fuel A 6.0ASTM D471
    Support D, 100°C, 70 hr, in ASTM #1 oil 2.0ASTM D471
    Support D, 100°C, 70 hr, in ASTM #3 oil 2.0ASTM D471
    Support D, 100°C, 168 hr, in ASTM #1 oil 1.0ASTM D471
    Support D, 100°C, 336 hr, in ASTM #1 oil -2.0ASTM D471
    Support D, 100°C, 504 hr, in ASTM #1 oil 0.0ASTM D471
    Support D, 100°C, 504 hr, in ASTM #3 oil -1.0ASTM D471
    Support D, 23°C, 70 hr, in reference fuel A (isooctane) -4.0ISO 175
    Support D, 23°C, 168 hr, in reference fuel A (isooctane) 1.0ISO 175
    Support D, 23°C, 336 hr, in reference fuel A (isooctane) -1.0ISO 175
    Support D, 23°C, 504 hr, in reference fuel A (isooctane) 6.0ISO 175
    Support D, 100°C, 70 hr, in ASTM #1 oil 2.0ISO 175
    Support D, 100°C, 70 hr, in ASTM #3 oil 2.0ISO 175
    Support D, 100°C, 168 hr, in ASTM #1 oil 1.0ISO 175
    Support D, 100°C, 336 hr, in ASTM #1 oil -2.0ISO 175
    Support D, 100°C, 504 hr, in ASTM #1 oil 0.0ISO 175
    Support D, 100°C, 504 hr, in ASTM #3 oil -1.0ISO 175
Change in Volume
    23°C, 70 hr, Class A standard fuel 0.0%ASTM D471
    23°C, 70 hr, Class C Standard Fuel 6.0%ASTM D471
    23°C, 168 hr, Class A standard fuel 0.0%ASTM D471
    23°C, 168 hr, Class C Standard Fuel 10%ASTM D471
    23°C, 336 hr, Class A standard fuel 0.0%ASTM D471
    23°C, 336 hr, Class C Standard Fuel 14%ASTM D471
    23°C, 504 hr, Class A standard fuel 0.0%ASTM D471
    23°C, 504 hr, Class C Standard Fuel 14%ASTM D471
    100°C, 70 hr, ASTM Standard Oil (No.1) -1.0%ASTM D471
    100°C, 70 hr, ASTM Standard Oil (No.3) 2.0%ASTM D471
    100°C, 168 hr, ASTM Standard Oil (No.1) 0.0%ASTM D471
    100°C, 336 hr, ASTM Standard Oil (No.1) -1.0%ASTM D471
    100°C, 504 hr, ASTM Standard Oil (No.1) -1.0%ASTM D471
    100°C, 504 hr, ASTM Standard Oil (No.3) 4.0%ASTM D471
    23°C, 70 hr, in reference fuel A 0.0%ISO 175
    23°C, 70 hr, in reference fuel C 6.0%ISO 175
    23°C, 168 hr, in reference fuel A 0.0%ISO 175
    23°C, 168 hr, in reference fuel C 10%ISO 175
    23°C, 336 hr, in reference fuel A 0.0%ISO 175
    23°C, 336 hr, in reference fuel C 14%ISO 175
    23°C, 504 hr, in reference fuel A 0.0%ISO 175
    23°C, 504 hr, in reference fuel C 14%ISO 175
    100°C, 70 hr, in ASTM #1 oil -1.0%ISO 175
    100°C, 70 hr, in ASTM #3 oil 2.0%ISO 175
    100°C, 168 hr, in ASTM #1 oil 0.0%ISO 175
    100°C, 336 hr, in ASTM #1 oil -1.0%ISO 175
    100°C, 504 hr, in ASTM #1 oil -1.0%ISO 175
    100°C, 504 hr, in ASTM #3 oil 4.0%ISO 175
ThermalNominal ValueUnitTest Method
Deflection Temperature Under Load (0.45 MPa, Unannealed)59.0°CASTM D648, ISO 75-2/B
Brittleness Temperature < -68.0°CASTM D746, ISO 974
Glass Transition Temperature -26.0°CDMA
Vicat Softening Temperature 168°CISO 306/50, ASTM D1525 6
CLTE - Flow 1.3E-4cm/cm/°CASTM D696
FlammabilityNominal ValueTest Method
Flame Rating (1.50 mm)HBUL 94
Additional InformationNominal ValueUnitTest Method
Compressive Load ASTM D575
    10% Deflection 7.41MPaASTM D575
    15% Deflection 10.1MPaASTM D575
    2% Deflection 0.965MPaASTM D575
    20% Deflection 12.7MPaASTM D575
    25% Deflection 15.5MPaASTM D575
    5% Deflection 3.90MPaASTM D575
    50% Deflection 40.6MPaASTM D575
InjectionNominal ValueUnit
Drying Temperature - Desiccant Dryer 93.0 - 104°C
Drying Time - Desiccant Dryer 2.0hr
Suggested Max Moisture < 0.030%
Suggested Shot Size 40 - 80%
Suggested Max Regrind 20%
Rear Temperature 193 - 210°C
Middle Temperature 193 - 216°C
Front Temperature 199 - 221°C
Nozzle Temperature 204 - 227°C
Processing (Melt) Temp 210°C
Mold Temperature 15.0 - 40.0°C
Injection Pressure 41.4 - 103MPa
Clamp Tonnage 4.1 - 6.9kN/cm²
Screw L/D Ratio 20.0:1.0
Screw Compression Ratio 2.5:1.0 - 3.0:1.0
Injection instructions
Mold Temperature (Stationary Part): 16 to 43°FMold Temperature (Moving Part): 60 to 100°F1st Stage: 7000 to 13000 psi2nd Stage: 6000 to 10000 psiTimers (per 0.125 in cross section): Boost: 5 to 15 sec 2nd Stage: 10 to 25 sec Cool: 25 to 40 sec
Note Message
1 .C mould
2 .Post-cured 16 hr at 230°F
3 .Post-cured 16 hr at 230°F
4 .Post-cured 16 hr at 230°F
5 .3 in clamp
6 .速率 A (50°C/h)
Resin Grade Manufacturer Category Trademark
MARCOBLEND AU 101 POLY GIN ABS MARCOBLEND
STYRON™ 637 Trinseo PS (GPPS) STYRON™
Blendfor® A 8000 NATURALE SO.F.TER. SPA PC+ABS Blendfor®
DOWLEX™ TG 2085B The Dow Chemical Company LLDPE DOWLEX™
Ecotan A FL NERO Soredi S.p.a. Nylon 66 Ecotan A

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