Wefapress St 7000® FRAS PE-UHMW

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Wefapress St 7000® FRAS PE-UHMW
Categories:	Polymer; Thermoplastic; Polyethylene (PE); High Density (HDPE); UHMW PE (Ultra High Molecular Weight PE)
Material Notes:	The premium quality St 7000® FRAS (fire-resistant and antistatic) is used in areas in which special fire regulations and electrostatic properties have to be fulfilled. With a surface resistance of < 10^7 ?, the material, based on ultra-high molecular weight polyethylene (PE-UHMW), displays good conductivity. Special additives additionally ensure flame-retarding behavior. In fire hazard testing conducted in accordance with DIN EN 60695-11-10:1999, St 7000® FRAS was rated in the classed HB40 (HB = horizontal burn) and V-0 (V = vertical burn). Properties: Anti-static, Flame retardant, High wear resistance, Zero moisture absorption, Excellent impact resistance. Applications: Guide rails, Sliding profiles, slide bearings, slide rails, Shock and impact resistant parts. Industries: Conveyor systems and automation, Mechanical and plant engineering. Information provided by Wefapress.
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Physical Properties	Metric	English	Comments

Density	1.05 g/cc	0.0379 lb/in³	DIN 53479
Moisture Absorption	<= 0.0100 %	<= 0.0100 %
Molecular Weight	5.00e+6 g/mol	5.00e+6 g/mol

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	60 - 68 @Time 15.0 sec	60 - 68 @Time 0.00417 hour	DIN 53505
Ball Indentation Hardness	40.0 MPa @Time 30.0 sec	5800 psi @Time 0.00833 hour	DIN ISO 2039 Teil 1
Elongation at Break	>= 150 %	>= 150 %	DIN ISO / R 527
Modulus of Elasticity	<= 0.890 GPa	<= 129 ksi	DIN 53457
Charpy Impact, Notched	8.00 J/cm²	38.1 ft-lb/in²	DIN 53457
Coefficient of Friction	0.25	0.25
Sand Slurry	130	130	% Abrasion

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.00e+6 ohm-cm	1.00e+6 ohm-cm	IEC 60093
Surface Resistance	1.00e+6 ohm	1.00e+6 ohm	IEC 60093

Thermal Properties	Metric	English	Comments
CTE, linear	200 µm/m-°C	111 µin/in-°F	DIN ISO 11359
Specific Heat Capacity	0.400 J/g-°C	0.0956 BTU/lb-°F
Thermal Conductivity	0.400 W/m-K	2.78 BTU-in/hr-ft²-°F
Melting Point	135 - 138 °C	275 - 280 °F	DTA
Maximum Service Temperature, Air	80.0 °C	176 °F	Continuous Application Temp.
Vicat Softening Point	80.0 °C	176 °F	DIN 53460
Minimum Service Temperature, Air	-200 °C	-328 °F
Flammability, UL94	V-0	V-0

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PWEFA917 / 243122

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