Manufacturer of plastic Lined Piping, Valves & Equipments.

Advantages of Fluoroplastics


Fluoroplastics:The Perfect Solution to Your Design Problems

Problem Solution
Adhesion, Release Possess extremely low surface energy in the solid state, thus providing an excellent anti-stick, non-wetting contact surface.
Atmospheric Aging Are transparent to ultraviolet light and extremely resistant to oxidation, surface fouling, discoloration, and embrittlement.
Biodegradation Are inert to enzymic and microbiological attack because the pure polymer does not provide nourishment or porosity for these growths.
Low-Temperature Service Retain their excellent properties event at cryogenic temperatures. In addition, their impact resistance at these temperatures exceeds that of most other polymers.
Contamination: Except for specialized grades, fluoropolymers are chemically inert and pure. They generally contain no additives-plasticizers, stabilizers, lubricants, or antioxidants which could contaminate process fluids.
Friction and Wear Feature one of the lowest coefficients of friction of any solid material. Their abrasion resistance is adaptable to demanding environments by using inorganic filters, such as glass, fibre, graphite, and powdered metals.
Heat Retain their properties after exposure to temperatures beyond the limit of almost all other themoplastics and elastomers. Depending on the end-use requirements,these resins are often rated for continuous service at temperatures as high as 260 deg. C. In certain cases, they can also withstand short excursions to higher temperatures.
Humidity Are extremely hydrophobic and completely resistant to hydrolysis. They are good barriers to water permeation; their typical properties and dimensional stability remains unchanged even after years-long immersion in water.
Light stability Have one of the lowest refractive indexes. They do not change their visual appearance after exposure to light ranging from ultraviolet to infrared.
Corrosion Resist even the most aggressive organic and inorganic chemicals and solvents over a broad temperature range.
Dielectrics Possess high dielectric strength, a low dielectric constant, low loss factors, and extremely high specific resistance. Furthermore, they surpass most materials in their level and stability of dielectric properties over a broad range of environmental conditions.
Flame Resistance offer remarkable resistance to high temperature and flames because they have very high melting points and auto-ignition temperatures, as well as exceptional thermal degradation thresholds. moreover their flame propagation characteristics, such as rate of heat release and smoke generation, are very low.
Long Services Life Exhibit outstanding retention of properties after aging, even at high temperatures and in the presence of solvents, oils, oxidizing agents, ultraviolet light,and other environmental agents. In addition, because they do not use any leachable or degradable stabilizing additives, they offer an important safety advantage when designing products for long service life.

Corrosion Resistance Chart

1 Acids Inorganic

2 Alkalies
3 Salts
4 Halogens
5 Solvents Aliphatic Hydrocarbons

Aromatic Hydrocarbons

Chlorinated Hydrocarbons






6 Phenols

Properties of Plastics

Physical properties of important plastics

Properties Standard Units PTFE PFA FEP ETFE PVDF PP

density DIN 53479 g/cm3 2.15 2.15 2.15 1.70 1.78 0.90
tensile strength DIN 53455 N/mm2 20-40 24-30 21-28 44 40-60 33
elongation at break DIN 53455 % 140-140 300 240-350 200 20-80 20-800
tensile modulus DIN 53457 N/mm2 350-750 280 350-500 900-1300 2400 1100-1300
flexural modulus ASTM D790 N/mm2 500 620-670 650-670 1300 2250
flexural stress DIN 53452 N/mm2 5.6 18 18 >12 74 47
impact strength ASTM D256 J/m 189 no break no break no break

hardness shore'D' DIN 53505
55 55 55 75 78 73
Coefficient of friction, dynamic ASTM D1894 <3m/min 0.1 0.2 0.2 0.23


linear thermal expansion coefficient ASTM D696 10^5K^1 12-20 14 9-11 8-12 12.8 15
upper permanent service temp. limit
deg.C 260 260 205 155 150 100
lower permanent service temp.
deg.C -200 -190 -190 -190 -40 -15
Vicat-point B DIN 53736 deg.C 130-140 74 70
142 102
thermal conductivity DIN 52612 W/mK 0.24 0.19 0.25 0.23 0.19 0.22
specific heat capacity
KJ/kg K 1.0
1.12 1.95 0.96 1.7
melting point DIN 53736 deg.C
305 275 270 178 165
Oxygen index ASTM D2863 % 95 95 95 30 43.7
fire class UL 94
V-0 V-0 V-0 V-0 V-0 HBN-2

Surface resistivity DIN 53482 ohm >10^17 >10^18 >10^16 5*10^14 >10^13 >10^13
volume resistivity DIN 53482 >10^18 >10^18 >10^16 >10^16 5*10^14 >10^17
dielectric strenght(foil 0.2-0.25mm) ASTM D149 kV/mm >20 >80 >83 >80 30-60 75
dielectric constant(10^6Hz) ASTM D150
2.1 2.1 2.1 2.6 7.5 2.3
dielectric factor(10^6Hz) ASTM D150
>0.0003 0.0001 0.0006 0.005 0.185 <0.001

weather resistance Florida exposure years unaffected 20 20 10 15

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