Hytrel® DYM250S BK472

About
Medium Modulus Polyester Elastomer with Excellent Impact Resistance Developed for Air Bag Door Applications&&

Product Description
SupplierDuPont
GenericTPC-ET
Material StatusCommercial: Active
FeaturesGood Rigidity,High impact resistance,Heat Stabilized
AvailabilitysAfrica & Middle East ,North America,Latin America,Asia Pacific,Europe
Process MethodsInjection Molding

Technical Data
MECHANICALNominal valueUnitTest method
Shore hardness ISO 868
Shaw’s D49 ISO 868
Shore D, 15 seconds44 ISO 868
Tensile modulus295MPaISO 527-2
tensile strength ISO 527-2
fracture30.0MPaISO 527-2
5% strain7.80MPaISO 527-2
10% strain9.70MPaISO 527-2
50% strain12.5MPaISO 527-2
100% strain14.0MPaISO 527-2
300% strain18.0MPaISO 527-2
Tensile strain
fracture> 300%ISO 527-2
Nominal tensile fracture strain600%ISO 527-2
Bending modulus350MPaISO 178

elastic bodyNominal valueUnitTest method
tear strength ISO 34-1
TD90kN/mISO 34-1
MD110kN/mISO 34-1

THERMALNominal valueUnitTest method
Hot deformation temperature
1.8 MPa, unannealed41.0ISO 75-2/A
0.45 MPa, unannealed48.0ISO 75-2/B
Embrittlement temperature-100ISO 974
Melting temperature222ISO 11357-3

FLAME CHARACTERISTICSNominal valueUnitTest method
Burning rate
1 mm24mm/minISO 3795
FMVSS flame retardant ratingB FMVSS 302
atomization ISO 6452
F-value(refraction)100%ISO 6452
G-value(condensate)0.0gISO 6452

Supplementary informationNominal valueUnitTest method
Emissions of organic compounds9.50µgC/gVDA 277
Odor4.00 VDA 270

PHYSICALNominal valueUnitTest method
Density1.16g/cm³ISO 1183
Melt Flow Rate
240℃,2.16kg13g/10minISO 1133
Melt Volume Rate
240℃,2.16 kg13.0cm³/10minISO 1133
Shrinkage rate ISO 294-4
TD1.2%ISO 294-4
MD1.2%ISO 294-4
Melt density0.995g/cm³

Process Conditions
injectionNominal valueUnitTest method
Drying temperature100°C
Drying time – hot air dryer3.0 to 4.0hr
Recommended maximum moisture content0.050%
Processing (melt) temperature240 to 250°C
Melt Temperature, Optimum245°C
Mold temperature40 to 55°C
Mold Temperature, Optimum45°C
Drying Recommendedyes 

Notes
1. Typical properties: these are not to be construed as specifications.
2. 10°C/min
3. FMVSS 302
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