Texin® 255

About
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.&&

Product Description
SupplierCovestro
GenericTPU-酯
Material StatusCommercial: Active
FeaturesGood flexibility,High impact resistance,Food contact compliance,Good wear resistance,Grease resistance,Fuel resistance,HB
AvailabilitysNorth America
Process MethodsInjection Molding

Technical Data
PHYSICALNominal valueUnitTest method
Density1.21g/cm³ASTM D792
Density1.21g/cm³ISO 1183
Shrinkage rate ISO 2577
TD:2.54 mm0.80%ASTM D955
MD:2.54 mm0.80%ASTM D955
TD:2.54 mm0.80%ISO 2577
MD:2.54 mm0.80%ISO 2577

MECHANICALNominal valueUnitTest method
Shore hardness
Shaw’s D55 ASTM D2240
Shaw’s D55 ISO 868
Bending modulus ASTM D790
-30℃1210MPaASTM D790
23℃68.9MPaASTM D790
70℃51.7MPaASTM D790
Bending modulus ISO 178
-30℃1210MPaISO 178
23℃68.9MPaISO 178
70℃51.7MPaISO 178
shear strength38.5MPaASTM D732
Taber abraser 
1000 cycles, 1000 g, H-18 wheels50.0mgISO 4649
1000 cycles, 1000 g, H-18 wheels50.0mgASTM D1044

elastic bodyNominal valueUnitTest method
tensile strength 
yield63.4MPaISO 37
yield63.4MPaASTM D412
300% strain32.4MPaISO 37
300% strain32.4MPaASTM D412
100% strain15.9MPaISO 37
100% strain15.9MPaASTM D412
50% strain12.4MPaISO 37
50% strain12.4MPaASTM D412
Tensile strain
fracture500%ASTM D412
fracture500%ISO 37
tear strength158kN/mASTM D624
tear strength160kN/mISO 34-1
Compression deformation ASTM D395B
23℃,22 hr15%ASTM D395B
23℃,22 hr20%ASTM D395B
70℃,22 hr35%ASTM D395B
70℃,22 hr65%ASTM D395B
100℃,22 hr50%ASTM D395B
100℃,22 hr75%ASTM D395B
Compression deformation ISO 815
23℃,22 hr15%ISO 815
23℃,22 hr20%ISO 815
70℃,22 hr35%ISO 815
70℃,22 hr65%ISO 815
100℃,22 hr75%ISO 815
100℃,22 hr50%ISO 815
Basho’s elasticity40%ASTM D2632

IMPACTNominal valueUnitTest method
Dart impact equipped with measuring instruments ASTM D3763
-30℃,2.54 mm,Total Energy50.0JASTM D3763
23℃,2.54 mm,Total Energy57.8JASTM D3763

THERMALNominal valueUnitTest method
Hot deformation temperature
0.45 MPa, unannealed59.0ISO 75-2/B
0.45 MPa, unannealed59.0ASTM D648
Embrittlement temperature< -68.0ASTM D746
Embrittlement temperature< -68.0ISO 974
Glass transition temperature-26.0DMA
Vicat Softening Temp168ASTM D1525 5
Vicat Softening Temp168ISO 306/50
Linear coefficient of thermal expansion
MD1.3E-41/℃ASTM D696

Aging performanceNominal valueUnitTest method
The rate of change in tensile strength in air ASTM D573
100℃,70 hr3.0%ASTM D573
100% Strain,100℃,70 hr11%ASTM D573
300% Strain,100℃,70 hr1.0%ASTM D573
100℃,168 hr8.0%ASTM D573
100% Strain,100℃,168 hr4.0%ASTM D573
300% Strain,100℃,168 hr-5.0%ASTM D573
100℃,336 hr14%ASTM D573
100% Strain,100℃,336 hr13%ASTM D573
300% Strain,100℃,336 hr-1.0%ASTM D573
100℃,504 hr14%ASTM D573
100% Strain,100℃,504 hr14%ASTM D573
300% Strain,100℃,504 hr1.0%ASTM D573
125℃,70 hr-20%ASTM D573
100% Strain,125℃,70 hr7.0%ASTM D573
300% Strain,125℃,70 hr-23%ASTM D573
125℃,168 hr-11%ASTM D573
100% Strain,125℃,168 hr-2.0%ASTM D573
300% Strain,125℃,168 hr-15%ASTM D573
125℃,336 hr-23%ASTM D573
100% Strain,125℃,336 hr8.0%ASTM D573
300% Strain,125℃,336 hr-27%ASTM D573
125℃,504 hr-27%ASTM D573
100% Strain,125℃,504 hr4.0%ASTM D573
300% Strain,125℃,504 hr-30%ASTM D573
The rate of change in tensile strength in air ISO 216
100℃,70 hr3.0%ISO 216
100% Strain 100℃,70 hr11%ISO 216
300% Strain 100℃,70 hr1.0%ISO 216
100℃,168 hr8.0%ISO 216
100% Strain 100℃,168 hr4.0%ISO 216
300% Strain 100℃,168 hr-5.0%ISO 216
100℃,336 hr14%ISO 216
100% Strain 100℃,336 hr13%ISO 216
300% Strain 100℃,336 hr-1.0%ISO 216
100℃,504 hr14%ISO 216
100% Strain 100℃,504 hr14%ISO 216
300% Strain 100℃,504 hr1.0%ISO 216
125℃,70 hr-20%ISO 216
100% Strain 125℃,70 hr7.0%ISO 216
300% Strain 125℃,70 hr-23%ISO 216
125℃,168 hr-11%ISO 216
100% strain 125 ℃, 168 hr-2.0%ISO 216
300% Strain 125℃,168 hr-15%ISO 216
125℃,336 hr-23%ISO 216
100% Strain 125℃,336 hr8.0%ISO 216
300% Strain 125℃,336 hr-27%ISO 216
125℃,504 hr-27%ISO 216
100% Strain 125℃,504 hr4.0%ISO 216
300% Strain 125℃,504 hr-30%ISO 216
The rate of change in ultimate elongation in air ASTM D573
100℃,70 hr-3.0%ASTM D573
100℃,168 hr7.0%ASTM D573
100℃,336 hr14%ASTM D573
100℃,504 hr15%ASTM D573
125℃,70 hr28%ASTM D573
125℃,168 hr24%ASTM D573
125℃,336 hr35%ASTM D573
125℃,504 hr30%ASTM D573
Changes in tensile stress during fracture in air ISO 216
100℃,70 hr-3.0%ISO 216
100℃,168 hr7.0%ISO 216
100℃,336 hr14%ISO 216
100℃,504 hr15%ISO 216
125℃,70 hr28%ISO 216
125℃,168 hr24%ISO 216
125℃,336 hr35%ISO 216
125℃,504 hr30%ISO 216
The rate of change in hardness of a hardness tester in the air ASTM D573
Shore D, 100 ℃, 70 hr-2.0 ASTM D573
Shore D, 100 ℃, 168 hr-1.0 ASTM D573
Shore D, 100 ℃, 336 hr0.0 ASTM D573
Shore D, 100 ℃, 504 hr0.0 ASTM D573
Shore D, 125 ℃, 70 hr1.0 ASTM D573
Support D, 125 ℃, 168 hr0.0 ASTM D573
Shaw’s D, 125 ℃, 336 hr-5.0 ASTM D573
Shaw’s D, 125 ℃, 504 hr-4.0 ASTM D573
The rate of change of Shore hardness in air ISO 216
Shore D, 100 ℃, 70 hr-2.0 ISO 216
Shore D, 100 ℃, 168 hr-1.0 ISO 216
Shore D, 100 ℃, 336 hr0.0 ISO 216
Shore D, 100 ℃, 504 hr0.0 ISO 216
Shore D, 125 ℃, 70 hr1.0 ISO 216
Support D, 125 ℃, 168 hr0.0 ISO 216
Shaw’s D, 125 ℃, 336 hr-5.0 ISO 216
Shaw’s D, 125 ℃, 504 hr-4.0 ISO 216
The rate of change in tensile strength ASTM D471
23℃,70 hr,in Reference Fuel A(Isooctane)6.0%ASTM D471
100% Strain,23℃,70 hr,in Reference Fuel A(Isooctane)2.0%ASTM D471
300% Strain,23℃,70 hr,in Reference Fuel A(Isooctane)5.0%ASTM D471
23 ℃, 70 hr, methanol1.0%ASTM D471
100% Strain,23℃,70 hr,in Reference Fuel C-19%ASTM D471
300% Strain,23℃,70 hr,in Reference Fuel C-22%ASTM D471
23℃,168 hr,in Reference Fuel A(Isooctane)-3.0%ASTM D471
100% Strain,23℃,168 hr,in Reference Fuel A(Isooctane)-2.0%ASTM D471
300% Strain,23℃,168 hr,in Reference Fuel A(Isooctane)-11%ASTM D471
23 ℃, 168 hr, methanol-4.0%ASTM D471
100% Strain,23℃,168 hr,in Reference Fuel C-27%ASTM D471
300% Strain,23℃,168 hr,in Reference Fuel C-34%ASTM D471
23℃,336 hr,in Reference Fuel A(Isooctane)6.0%ASTM D471
100% Strain,23℃,336 hr,in Reference Fuel A(Isooctane)3.0%ASTM D471
300% Strain,23℃,336 hr,in Reference Fuel A(Isooctane)-1.0%ASTM D471
23℃,336 hr,in Reference Fuel C-10%ASTM D471
100% Strain,23℃,336 hr,in Reference Fuel C-32%ASTM D471
300% Strain,23℃,336 hr,in Reference Fuel C-35%ASTM D471
23℃,504 hr,in Reference Fuel A(Isooctane)-1.0%ASTM D471
100% Strain,23℃,504 hr,in Reference Fuel A(Isooctane)5.0%ASTM D471
300% Strain,23℃,504 hr,in Reference Fuel A(Isooctane)3.0%ASTM D471
23℃,504 hr,in Reference Fuel C-11%ASTM D471
100% Strain,23℃,504 hr,in Reference Fuel C-27%ASTM D471
300% Strain,23℃,504 hr,in Reference Fuel C-28%ASTM D471
100 ℃, 70 hr, in ASTM # 1 oil18%ASTM D471
100% Strain,100℃,70 hr,in ASTM #1 Oil12%ASTM D471
300% Strain,100℃,70 hr,in ASTM #1 Oil7.0%ASTM D471
100 ℃, 70 hr, in ASTM # 3 oil19%ASTM D471
100% Strain,100℃,70 hr,in ASTM #3 Oil16%ASTM D471
300% Strain,100℃,70 hr,in ASTM #3 Oil13%ASTM D471
100℃,168 hr,in ASTM #1 Oil-4.0%ASTM D471
100% Strain,100℃,168 hr,in ASTM #1 Oil14%ASTM D471
300% Strain,100℃,168 hr,in ASTM #1 Oil2.0%ASTM D471
100℃,336 hr,in ASTM #1 Oil-20%ASTM D471
100% Strain,100℃,336 hr,in ASTM #1 Oil14%ASTM D471
300% Strain,100℃,336 hr,in ASTM #1 Oil-9.0%ASTM D471
100℃,504 hr,in ASTM #1 Oil-29%ASTM D471
100% Strain,100℃,504 hr,in ASTM #1 Oil15%ASTM D471
300% Strain,100℃,504 hr,in ASTM #1 Oil-14%ASTM D471
100℃,504 hr,in ASTM #3 Oil-18%ASTM D471
100% Strain,100℃,504 hr,in ASTM #3 Oil2.0%ASTM D471
300% Strain,100℃,504 hr,in ASTM #3 Oil-12%ASTM D471
The rate of change in tensile strength ISO 175
23℃,70 hr,in Reference Fuel A(Isooctane)6.0%ISO 175
100% Strain,23℃,70 hr,in Reference Fuel A(Isooctane)2.0%ISO 175
300% Strain,23℃,70 hr,in Reference Fuel A(Isooctane)5.0%ISO 175
23 ℃, 70 hr, methanol1.0%ISO 175
100% Strain,23℃,70 hr,in Reference Fuel C-19%ISO 175
300% Strain,23℃,70 hr,in Reference Fuel C-22%ISO 175
23℃,168 hr,in Reference Fuel A(Isooctane)-3.0%ISO 175
100% Strain,23℃,168 hr,in Reference Fuel A(Isooctane)-2.0%ISO 175
300% Strain,23℃,168 hr,in Reference Fuel A(Isooctane)-11%ISO 175
23 ℃, 168 hr, methanol-4.0%ISO 175
100% Strain,23℃,168 hr,in Reference Fuel C-27%ISO 175
300% Strain,23℃,168 hr,in Reference Fuel C-34%ISO 175
23℃,336 hr,in Reference Fuel A(Isooctane)6.0%ISO 175
100% Strain,23℃,336 hr,in Reference Fuel A(Isooctane)3.0%ISO 175
300% Strain,23℃,336 hr,in Reference Fuel A(Isooctane)-1.0%ISO 175
23℃,336 hr,in Reference Fuel C-10%ISO 175
100% Strain,23℃,336 hr,in Reference Fuel C-32%ISO 175
300% Strain,23℃,336 hr,in Reference Fuel C-35%ISO 175
23℃,504 hr,in Reference Fuel A(Isooctane)-1.0%ISO 175
100% Strain,23℃,504 hr,in Reference Fuel A(Isooctane)5.0%ISO 175
300% Strain,23℃,504 hr,in Reference Fuel A(Isooctane)3.0%ISO 175
23℃,504 hr,in Reference Fuel C-11%ISO 175
100% Strain,23℃,504 hr,in Reference Fuel C-27%ISO 175
300% Strain,23℃,504 hr,in Reference Fuel C-28%ISO 175
100 ℃, 70 hr, in ASTM # 1 oil18%ISO 175
100% Strain,100℃,70 hr,in ASTM #1 Oil12%ISO 175
300% Strain,100℃,70 hr,in ASTM #1 Oil7.0%ISO 175
100 ℃, 70 hr, in ASTM # 3 oil19%ISO 175
100% Strain,100℃,70 hr,in ASTM #3 Oil16%ISO 175
300% Strain,100℃,70 hr,in ASTM #3 Oil13%ISO 175
100℃,168 hr,in ASTM #1 Oil-4.0%ISO 175
100% Strain,100℃,168 hr,in ASTM #1 Oil14%ISO 175
300% Strain,100℃,168 hr,in ASTM #1 Oil2.0%ISO 175
100℃,336 hr,in ASTM #1 Oil-20%ISO 175
100% Strain,100℃,336 hr,in ASTM #1 Oil14%ISO 175
300% Strain,100℃,336 hr,in ASTM #1 Oil-9.0%ISO 175
100℃,504 hr,in ASTM #1 Oil-29%ISO 175
100% Strain,100℃,504 hr,in ASTM #1 Oil15%ISO 175
300% Strain,100℃,504 hr,in ASTM #1 Oil-14%ISO 175
100℃,504 hr,in ASTM #3 Oil-18%ISO 175
100% Strain,100℃,504 hr,in ASTM #3 Oil2.0%ISO 175
300% Strain,100℃,504 hr,in ASTM #3 Oil-12%ISO 175
Change rate of ultimate elongation ASTM D471
23℃,70 hr,in Reference Fuel A(Isooctane)-4.0%ASTM D471
23 ℃, 70 hr, methanol5.0%ASTM D471
23℃,168 hr,in Reference Fuel A(Isooctane)9.0%ASTM D471
23 ℃, 168 hr, methanol6.0%ASTM D471
23℃,336 hr,in Reference Fuel A(Isooctane)-4.0%ASTM D471
23℃,336 hr,in Reference Fuel C-2.0%ASTM D471
23℃,504 hr,in Reference Fuel A(Isooctane)-2.0%ASTM D471
23℃,504 hr,in Reference Fuel C-8.0%ASTM D471
100 ℃, 70 hr, in ASTM # 1 oil8.0%ASTM D471
100 ℃, 70 hr, in ASTM # 3 oil6.0%ASTM D471
100℃,168 hr,in ASTM #1 Oil12%ASTM D471
100℃,336 hr,in ASTM #1 Oil24%ASTM D471
100℃,504 hr,in ASTM #1 Oil16%ASTM D471
100℃,504 hr,in ASTM #3 Oil20%ASTM D471
Changes in tensile stress during fracture ISO 175
23℃,70 hr,in Reference Fuel A(Isooctane)-4.0%ISO 175
23 ℃, 70 hr, methanol5.0%ISO 175
23℃,168 hr,in Reference Fuel A(Isooctane)9.0%ISO 175
23 ℃, 168 hr, methanol6.0%ISO 175
23℃,336 hr,in Reference Fuel A(Isooctane)-4.0%ISO 175
23℃,336 hr,in Reference Fuel C-2.0%ISO 175
23℃,504 hr,in Reference Fuel A(Isooctane)-2.0%ISO 175
23℃,504 hr,in Reference Fuel C-8.0%ISO 175
100 ℃, 70 hr, in ASTM # 1 oil8.0%ISO 175
100 ℃, 70 hr, in ASTM # 3 oil6.0%ISO 175
100℃,168 hr,in ASTM #1 Oil12%ISO 175
100℃,336 hr,in ASTM #1 Oil24%ISO 175
100℃,504 hr,in ASTM #1 Oil16%ISO 175
100℃,504 hr,in ASTM #3 Oil20%ISO 175
The rate of change in Shore hardness ASTM D471
Shore D, 23 ℃, 70 hr, in reference fuel A (isooctane)-4.0 ASTM D471
Shore D, 23°C, 70 hr, in Reference Fuel C-7.0 ASTM D471
Shore D, 23 ℃, 168 hr, in reference fuel A (isooctane)1.0 ASTM D471
Shore D, 23 ℃, 168 hr, in reference fuel-4.0 ASTM D471
Shore D, 23 ℃, 336 hr, in reference fuel A (isooctane)-1.0 ASTM D471
Shore D, 23 ℃, 336 hr, in reference fuel C-6.0 ASTM D471
Shore D, 23 ℃, 504 hr, in reference fuel A (isooctane)6.0 ASTM D471
Shore D, 23 ℃, 504 hr, in reference fuel C-8.0 ASTM D471
Shore D, 100°C, 70 hr, in ASTM #1 Oil2.0 ASTM D471
Shore D, 100 ℃, 70 hr, in ASTM # 3 oil2.0 ASTM D471
Shore D, 100°C, 168 hr, in ASTM #1 Oil1.0 ASTM D471
Shore D, 100 ℃, 336 hr, in ASTM # 1 oil-2.0 ASTM D471
Shore D, 100 ℃, 504 hr, in ASTM # 1 oil0.0 ASTM D471
Shore D, 100 ℃, 504 hr, in ASTM # 3 oil-1.0 ASTM D471
The rate of change in Shore hardness ISO 175
Shore D, 23 ℃, 70 hr, in reference fuel A (isooctane)-4.0 ISO 175
Shore D, 23°C, 70 hr, in Reference Fuel C-7.0 ISO 175
Shore D, 23 ℃, 168 hr, in reference fuel A (isooctane)1.0 ISO 175
Shore D, 23 ℃, 168 hr, in reference fuel-4.0 ISO 175
Shore D, 23 ℃, 336 hr, in reference fuel A (isooctane)-1.0 ISO 175
Shore D, 23 ℃, 336 hr, in reference fuel C-6.0 ISO 175
Shore D, 23 ℃, 504 hr, in reference fuel A (isooctane)6.0 ISO 175
Shore D, 23 ℃, 504 hr, in reference fuel C-8.0 ISO 175
Shore D, 100°C, 70 hr, in ASTM #1 Oil2.0 ISO 175
Shore D, 100 ℃, 70 hr, in ASTM # 3 oil2.0 ISO 175
Shore D, 100°C, 168 hr, in ASTM #1 Oil1.0 ISO 175
Shore D, 100 ℃, 336 hr, in ASTM # 1 oil-2.0 ISO 175
Shore D, 100 ℃, 504 hr, in ASTM # 1 oil0.0 ISO 175
Shore D, 100 ℃, 504 hr, in ASTM # 3 oil-1.0 ISO 175
Volume change ASTM D471
23℃,70 hr,in Reference Fuel A0.0%ASTM D471
23 ℃, 70 hr, methanol6.0%ASTM D471
23℃,168 hr,in Reference Fuel A0.0%ASTM D471
23 ℃, 168 hr, methanol10%ASTM D471
23℃,336 hr,in Reference Fuel A0.0%ASTM D471
23℃,336 hr,in Reference Fuel C14%ASTM D471
23℃,504 hr,in Reference Fuel A0.0%ASTM D471
23℃,504 hr,in Reference Fuel C14%ASTM D471
100 ℃, 70 hr, in ASTM # 1 oil-1.0%ASTM D471
100 ℃, 70 hr, in ASTM # 3 oil2.0%ASTM D471
100℃,168 hr,in ASTM #1 Oil0.0%ASTM D471
100℃,336 hr,in ASTM #1 Oil-1.0%ASTM D471
100℃,504 hr,in ASTM #1 Oil-1.0%ASTM D471
100℃,504 hr,in ASTM #3 Oil4.0%ASTM D471
Volume change ISO 175
23℃,70 hr,in Reference Fuel A0.0%ISO 175
23 ℃, 70 hr, methanol6.0%ISO 175
23℃,168 hr,in Reference Fuel A0.0%ISO 175
23 ℃, 168 hr, methanol10%ISO 175
23℃,336 hr,in Reference Fuel A0.0%ISO 175
23℃,336 hr,in Reference Fuel C14%ISO 175
23℃,504 hr,in Reference Fuel A0.0%ISO 175
23℃,504 hr,in Reference Fuel C14%ISO 175
100 ℃, 70 hr, in ASTM # 1 oil-1.0%ISO 175
100 ℃, 70 hr, in ASTM # 3 oil2.0%ISO 175
100℃,168 hr,in ASTM #1 Oil0.0%ISO 175
100℃,336 hr,in ASTM #1 Oil-1.0%ISO 175
100℃,504 hr,in ASTM #1 Oil-1.0%ISO 175
100℃,504 hr,in ASTM #3 Oil4.0%ISO 175

FLAME CHARACTERISTICSNominal valueUnitTest method
Flame retardant level
1.50 mmHB UL 94

Supplementary informationNominal valueUnitTest method
Compression load ASTM D575
10% deflection7.41MPaASTM D575
15% deflection10.1MPaASTM D575
2% deflection0.965MPaASTM D575
20% deflection12.7MPaASTM D575
25% deflection15.5MPaASTM D575
5% deflection3.90MPaASTM D575
50% deflection40.6MPaASTM D575

Process Conditions
injectionNominal valueUnitTest method
Drying temperature – hot air dryer93 to 104°C
Drying time – hot air dryer2.0hr
Recommended maximum moisture content< 0.030%
Recommended injection volume40 to 80%
Proposed maximum recycled material ratio20%
Barrel rear temperature193 to 210°C
Barrel middle temperature193 to 216°C
Barrel front temperature199 to 221°C
Nozzle temperature204 to 227°C
Processing (melt) temperature210°C
Mold temperature15 to 40°C
Injection pressure41.4 to 103MPa
Clamping force4.1 to 6.9kN/cm²
Screw length to diameter ratio20.0:1.0 
Screw compression ratio2.5:1.0 to 3.0:1.0 

Notes
1. Typical properties: these are not to be construed as specifications.
2. Die C
3. Post-cured 16 hr at 230°F
4. 3 in clamp
5. Rate A (50°C/h)
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