Medalist™ MD-8431 (PRELIMINARY DATA)

About
Medalist MD-8431 is a high performance thermoplastic elastomer designed specifically for extrusion and injection molded electrical applications in the medical and healthcare industry. Medalist MD-8431 is a low hardness, low density grade exhibiting good flexibility over a wide temperature range and is suitable for insulation and jacketing.&&

Product Description
Supplier	Teknor Apex
Generic	TPE
Material Status	Commercial: Active
Features	Low liquidity,Smoothness,Good disinfection,Halogen free,Good color stability,High pressure disinfection,Good Tensile Strength,Low density,Radiation disinfection,Insulation,Ethylene oxide disinfection,Good coloring
Availabilitys	Africa & Middle East ,North America,Latin America,Asia Pacific,Europe
Process Methods	Injection Molding

Technical Data
PHYSICAL	Nominal value	Unit	Test method
Density	0.918	g/cm³	ASTM D792
Melt Flow Rate
200℃，5.0kg	5.0	g/10min	ASTM D1238

MECHANICAL	Nominal value	Unit	Test method
Shore hardness
Shore A, 1 second	70
Shore A, 5 seconds	68

elastic body	Nominal value	Unit	Test method
tensile strength
fracture	18.3	MPa	ASTM D412
100% strain	2.62	MPa
300% strain	4.55	MPa
Tensile strain
fracture	700	%	ASTM D412

Aging performance	Nominal value	Unit	Test method
The rate of change in tensile strength in air
136℃，168 hr	26	%	ASTM D573
The rate of change in ultimate elongation in air
136℃，168 hr	-1.0	%	ASTM D573
The rate of change in tensile strength
60 ℃, 168 hr, in IRM 902 oil	-31	%	ASTM D471
Change rate of ultimate elongation
60 ℃, 168 hr, in IRM 902 oil	-7.0	%	ASTM D471

THERMAL	Nominal value	Unit	Test method
Embrittlement temperature	< -60.0	℃	ASTM D746

Electrical performance	Nominal value	Unit	Test method
Volume resistivity
23℃	4.3E+16	ohms·cm
50 ℃	3.9E+15	ohms·cm
Dielectric strength	48	kV/mm	ASTM D149
Dielectric constant
1 kHz	2.29		ASTM D150
Dissipation factor
1 kHz	8.6E-4		ASTM D150

FLAME CHARACTERISTICS	Nominal value	Unit	Test method
1.5 mm，NT	HB		UL 94
Extreme oxygen index	19	%	ASTM D2863

Legal Statement	Nominal value	Unit	Test method

Process Conditions
injection	Nominal value	Unit	Test method
Squeeze description	Nominal value	Unit	Test method
Extrusion	Nominal value	Unit	Test method
Barrel rear temperature	199 to 216	°C
Barrel middle temperature	213 to 221	°C
Barrel front temperature	221 to 227	°C
Nozzle temperature	221 to 229	°C
Processing (melt) temperature	221 to 229	°C
Mold temperature	25 to 66	°C
Back pressure	0.172 to 0.345	MPa
Screw speed	50 to 100	rpm
Cushion	3.81 to 25.4	mm

Barrel 1 zone temperature	193 to 210	°C
Barrel 2 zone temperature	199 to 216	°C
Barrel 3 zone temperature	213 to 221	°C
Barrel 4 zone temperature	213 to 221	°C
Barrel 5 zone temperature	221 to 229	°C
Nozzle temperature	221 to 229	°C

Notes
1. Typical properties: these are not to be construed as specifications.
【 Disclaimer 】 Guangzhou Soliao Information Technology Co., Ltd. reserves all rights. The information in this data table was obtained from the manufacturer of the material on soliao.com. Soliao.com makes every effort to ensure the accuracy of this data. However, the search company does not assume any responsibility for the uncertainty and consequences caused to users by these data values and suggestions, and strongly recommends verifying the data values with the material supplier before the final selection of materials.

Notes

1. Typical properties: these are not to be construed as specifications.

【 Disclaimer 】
Guangzhou Soliao Information Technology Co., Ltd. reserves all rights. The information in this data table was obtained from the manufacturer of the material on soliao.com. Soliao.com makes every effort to ensure the accuracy of this data. However, the search company does not assume any responsibility for the uncertainty and consequences caused to users by these data values and suggestions, and strongly recommends verifying the data values with the material supplier before the final selection of materials.