PTFE Detailed Properties

      聚四氟乙烯(PTFE Detailed Properties)英文资料，希望对大家有用。
      The table below lists a generally accepted summary of properties that we believe to be reliable. Please note that many of these resins are produced in several varieties and property characteristics may vary. Therefore, determination of resin is dependent on the application and this table is only meant to serve as a general guideline.
Properties ASTM or Unit PTFE
MECHANICAL PROPERTIES
Specific Gravity D792 2.18
Elongation % D638 200~450
Tensile Strength (psi) D638 2,000~4,500
Flexural Strength (psi) D790 no break
Compressive Strength（psi） D695 3,500（24MPa）
Tensile Elastic Modulus
(Young's Modulus) (psi) D638 57,000
(psi)
Flexural Modulus
103MPa (103kgf/cm2) D790 71,000~
85,000
D790 0.5-0.6
(5.0-6.0)
FlexLife
(MIT cycles) D2176 >1,000,000
Hardness Durometer
Shore D D636 D50~65
Coefficient of Friction on steel 0.02
Abrasion Resistance
1000 revs. Taber 12
Impact Strength IZOD
73°F/23°C, notched ft/lbs/in D256 3
THERMAL PROPERTIES
Melting Point °C
(°F) 327
(621)
Upper Service
Temperature(20,000h) °C
(°F) 260
(500)
Flame Rating** UL 94 V-0