DSM Biomedical Elasthane™ 55D Thermoplastic Polyether Polyurethane (TPU)

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DSM Biomedical Elasthane™ 55D Thermoplastic Polyether Polyurethane (TPU)
Categories:	Polymer; Thermoplastic; Polyurethane, TP; Thermoplastic Polyurethane (TPUR), Polyether Grade
Material Notes:	A high tensile strength, aromatic biomedical polymer with an exceptional combination of mechanical properties plus biological compatibility Elasthane™ TPU exhibits outstanding hydrolytic stability. Widely Used This polyether-based polymer is designed to support long-term implantation and has been used in many commercially available medical devices including cardiovascular, neurostimulation and orthopedic implants. Tailor Made Elasthane™ TPU can be enhanced with SME® technology to incorporate end groups that can address the needs of specific device applications. This eliminates the need for additional surface processing steps after the device component is fabricated. Summary of Product Benefits Excellent mechanical properties and abrasion resistance Hydrolytically stable Biocompatibile Adaptable with SME® technology Established FDA Master File Information provided by DSM Biomedical.
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Physical Properties	Original Value	Comments

Specific Gravity	1.16 g/cc	ASTM D792
Linear Mold Shrinkage	0.014 in/in	4 inch disk; ASTM D955
Linear Mold Shrinkage, Transverse	0.0050 - 0.010 in/in	Flame Bar; ASTM D955
Melt Flow	13 g/10 min @Load 2.16 kg, Temperature 224 °C	ASTM D1238

Mechanical Properties	Original Value	Comments
Hardness, Shore D	55	ASTM D2240
Tensile Strength, Ultimate	7848 psi	ASTM D1708
Tensile Stress at Strain	1720 psi @Strain 50 %	ASTM D1708
	2170 psi @Strain 100 %	ASTM D1708
	4890 psi @Strain 300 %	ASTM D1708
Elongation at Break	382 %	ASTM D1708
Flexural Strength	893 psi	at 5% deflection; ASTM D790
Flexural Modulus, 1% Secant	21600 psi	ASTM D790
Tear Strength	781 pli	Die 'C'; ASTM D624
Taber Abrasion, mg/1000 Cycles	48	H-18 Wheel; ASTM D1044
Compression Set	40 % @Temperature 25.0 °C	22 hours; ASTM D395

Electrical Properties	Original Value	Comments
Dielectric Constant	5.2 @Frequency 60 Hz	ASTM D150
Dielectric Strength	385 V/mil	ASTM D149

Thermal Properties	Original Value	Comments
CTE, linear	152.2 µm/m-°C @Temperature 20.0 °C	ASTM E-831
Vicat Softening Point	129 °C	ASTM D1525

Processing Properties	Original Value	Comments
Processing Temperature	194 - 210 °C	Optimum Extrusion Conditions

Descriptive Properties
Color	Clear to Amber pellets
Cytotoxicity	Non-cytotoxic
Hemocompatibility	Non-hemolytic

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