Teknor Apex Medalist® MD-555 Thermoplastic Elastomer, Medical Grade

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Teknor Apex Medalist® MD-555 Thermoplastic Elastomer, Medical Grade
Categories:	Polymer; Thermoplastic; Elastomer, TPE
Material Notes:	Notes: Medalist MD-555 is a high performance thermoplastic elastomer intended for use in healthcare and medical applications. Medalist MD-555 is a medium hardness, low density, clear grade designed to be a sustainable alternative to flexible PVC with excellent processability and throughput in extruded tubing. . Features: Autoclave Sterilizable; Chemical Resistant; Ethylene Oxide Sterilizable; Good Adhesion; Good Processability; Good Sterilizability; Halogen Free; High Clarity; High purity: Low Density; Low Specific Gravity; Medium Hardness; No Animal Derived Components; Radiation (Gamma) Resistant Uses: Film; Medical/Healthcare Application; Pharmaceutical; Rubber Replacement; Tubing Form: Pellets Processing Method: Cast Film; Extrusion; Injection Molding
Key Words:	TPE
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Physical Properties	Original Value	Comments

Specific Gravity	0.890 g/cc	ASTM D792
Melt Flow	15 g/10 min @Load 2.16 kg, Temperature 230 °C	ASTM D1238

Mechanical Properties	Original Value	Comments
Hardness, Shore A	53	5 seconds; ASTM D2240
	55	1 seconds; ASTM D2240
Tensile Strength	1340 psi	ASTM D412
Tensile Stress at Strain	220 psi @Strain 50 %	ASTM D412
	270 psi @Strain 100 %	ASTM D412
	415 psi @Strain 300 %	ASTM D412
Elongation at Break	890 %	ASTM D412
Tear Strength	31.0 kN/m	ASTM D624
Compression Set	9.1 % @Temperature 22.8 °C, Time 79200 sec	ASTM D395

Processing Properties	Original Value	Comments
Middle Barrel Temperature	280 - 320 °F
Front Barrel Temperature	300 - 340 °F
Nozzle Temperature	340 - 380 °F
Zone 1	340 - 370 °F
Zone 2	360 - 385 °F
Zone 3	365 - 400 °F
Zone 4	365 - 400 °F
Zone 5	400 - 440 °F
Die Temperature	400 - 440 °F
Melt Temperature	340 - 380 °F	Processing Temp
Mold Temperature	70.0 - 100 °F
Injection Pressure	200 - 800 psi
Back Pressure	25.0 - 100 psi
Cushion	0.150 - 1.00 in
Screw Speed	50 - 100 rpm

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PTEKNO921 / 129102

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