(PTFE)

	Characteristics		Unit	Test method ASTM	PTFE
Physical	Melting point		℃	-	327
	Specifi c gravity		-	D792	2.14-2.20
Mechanical	Tensile strength		MPa	D638	13.7-34.3
	Elongation		％	D638	200-400
	Compression strength		MPa	D695	11.8
	Impact strength (Izod)		J/m	D256A	160
	Hardness (Rockwell)		-	D785	-
	Hardness (Shore)		-	D2240	D50-55
	Bending modulus of elasticity		GPa	D790	0.55
	Tensile modulus of elasticity		GPa	D638	0.40-0.55
	Dynamic friction coeffi cient		-	0＞69 MKa 3 m/mins.	0.10
Thermal	Thermal conductivity		W/(m・K)	C177	0.25
	Specifi c heat		KJ/(k・K)	-	1.05
	Linear expansion coeffi cient		10-5/℃	D696	10
	Ball pressure temperature		℃	-	180
	Thermal deformation temperature	1.82 MPa	℃	D648	55
		0.45 MPa	℃	D648	121
	Maximum use temperature (continuous)		℃	(No load)	260
Electrical	Specifi c volume resistance		Ω-cm	D257 (50％ RH, 23℃)	＞1018
	Dielectric breakdown strength (short interval method) 3.2 mm thickness		kV/mm	D149	19
	Permittivity	60 Hz	PF/m	D150	＜18.6
		103 Hz	PF/m	D150	＜18.6
		106 Hz	PF/m	D150	＜18.6
	Dissipation factor	60 Hz	-	D150	＜0.0002
		103 Hz	-	D150	＜0.0002
		106 Hz	-	D150	＜0.0002
	Arc resistance		secs.	D495	＞300
Durability, etc.	Water absorption rate 24 hrs.		％	D570	＜0.01
	(3.2 mm thickness flammability)		-	(UL-94)	V-0 (material)
	Oxygen index		-	D2863	＞95
	Eff ects of direct sunlight		-	-	None
	Eff ects of weak acid		-	D543	None
	Eff ects of strong acid		-	D543	None
	Eff ects of weak alkali		-	D543	None
	Eff ects of strong alkali		-	D543	None
	Eff ects of solvent		-	D543	None

Note: The numeric values above are typical values. They are not standard values.