GEHR Plastics PVDF Polyvinylidene Fluoride

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GEHR Plastics PVDF Polyvinylidene Fluoride
Categories:	Polymer; Thermoplastic; Fluoropolymer; Polyvinylidene Fluoride (PVDF)
Material Notes:	Polyvinylidene fluoride shows a higher tensile strength, pressure resistance and dimensional stability than the related PTFE, but friction and insulation properties are lower. PVDF has a high mechanical strength and toughness at lower temperature and it's self-extinguishing. The temperature ranges from -30°C to 150°C. Properties high tensile strength high mechanical strength high rigidity high chemical resistance very low water absorption good friction and wear and tear values self-extinguishing high UV-resistance toxic fumes when burned can not be solvent cemented relatively high coefficient of thermal expansion Applications include gaskets, pumps, rotation disks, valves, flap traps, centrifugals of extraction, fittings, glide tracks, and cogwheels.
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Physical Properties	Original Value	Comments

Specific Gravity	1.78 g/cc	ISO 1183
Moisture Absorption at Equilibrium	0.010 %	ISO 62
Water Absorption at Saturation	0.040 %	ISO 62

Mechanical Properties	Original Value	Comments
Hardness, Shore D	80	ISO 868
Ball Indentation Hardness	120 MPa	ISO 2039
Tensile Strength at Break	46.0 MPa	ISO 527
Tensile Strength, Yield	58.0 MPa	ISO 527
Elongation at Break	29 %	ISO 527
Elongation at Yield	17 %	ISO 527
Modulus of Elasticity	2.125 GPa	ISO 527
Flexural Strength	80.0 MPa	ISO 178
Charpy Impact Unnotched	NB	ISO 179
Charpy Impact, Notched	12.0 kJ/m²	ISO 179

Electrical Properties	Original Value	Comments
Volume Resistivity	3.00e+10 ohm-cm	IEC 60093
Surface Resistance	>= 1.00e+13 ohm	IEC 60093
Dielectric Constant	7.0 @Frequency 1e+6 Hz	IEC 60250
Dielectric Strength	27.0 kV/mm	IEC 60243-1
Dielectric Loss Index	0.24 @Frequency 1e+6 Hz	IEC 60250
Comparative Tracking Index	600 V	IEC 60112

Thermal Properties	Original Value	Comments
CTE, linear	130 µm/m-°C	ISO 11359
Thermal Conductivity	0.130 W/m-K @Temperature 20.0 °C	ISO 22007-4
Melting Point	171 °C	DIN EN ISO 3146
Maximum Service Temperature, Air	150 °C	UL 746B
Deflection Temperature at 0.46 MPa (66 psi)	145 °C	ISO 75
Deflection Temperature at 1.8 MPa (264 psi)	104 °C	ISO 75
Vicat Softening Point	138 °C	VST/B/50; ISO 306
	160 °C	VST/A/50; ISO 306
Minimum Service Temperature, Air	-30.0 °C	UL 746B
Glass Transition Temp, Tg	-40.0 °C	DIN EN ISO 3146
Flammability, UL94	V-0	UL 94
Oxygen Index	44 %	ASTM D2863

Compliance Properties	Original Value	Comments
FDA	Yes	Physiological indifference

Descriptive Properties
Acid Resistance	limited
Aromatic Resistance	yes
Bondability	limited, pretreatment necessary
CKW Resistance	yes
Color	natural
Hydrocarbonate Resistance	yes
Hydroxide Resistance	yes
Ketone Resistance	yes
Physiological indifference	no, EEC
Resistance Against Hot Water	yes
UV Stabilization	yes

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PGEHR029 / 79866

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