F4Performance and Indicators:

Flood Polytetrafluoroethylene
Serial number technology	Unit	Numerical value
Density	g/cm3	2.1-2.3
Tensile strength	Mpa	>=25.5
Part and Elongation rate	%	>=250
Brinell hardness	Kg/cm2	4.54
Thermal conductivity	Kcal/mh/℃	0.21
Linear expansion coefficient	Cm/℃	×0.0001
	－300℃	1.09
	－50－0℃	1.13
	0－50℃	1.23
	50－100℃	1.34
	100－150℃	1.365
	150－200℃	1.69
	200－250℃	2.165
Volume resistivity	Omega/cm	>=10∧17
Surface  resistivity	Omega	>=10∧14
Dielectric loss tangent values	KV/mm	<=0.00025
Friction coeffient		》=60
Heat resistance		0.04-0.15
	℃	－300－260

Polytetrafluoroethylene which is short for PTFE, also known as F4, Teflon, has unique heat resistance and excellent lubricity in plastic products ,so it can be called “the king of plastic”.
There are some datum about pure PTFE in this table , filling PTFE material can be made by adding various fillings into the pure PTFE material.
Filling PTFE material compared to pure PTFE has the following characteristics:
8. High load deformation can be increased by 5 times;
9. Wearable consumption may increase 5-8 times;
10.steel may raise 3-5 times;
11.Linear expansion coefficient can be reduced 1/3-1/2;
12.Thermal conductivity can be increased by 5 times;
13.Creep resistance can increase 3 times;
14.Compressive strength can enhance 2-3 times.
After adding to filling, the tensile strength, elongation, and impact strength has declined. Therefore, to select filler ratio of ingredients based on the products’ performance requirements so as to achieve desired results.
Hot Modulus Graphite Performance Indicators:

Type	Flexural strength>=Mpa	Impact strength>=Kl/m2	Variable temperature heat>=℃	Xiao’s hardness  Hs	Bulk densityg/cm3
HMC-301	72	5.5	200	70	1.85
HMC-302	76	5.8	200	76	1.90
HMC-303	80	6.0	220	78	1.95