PTFE
Sheet and Film.....................ASTM D 3293 (and
MIL-P22241). Describes the properties and characteristics parameters
for PTFE molded sheets (thicker than .250 inches).
PTFE
Rod.....................................ASTM 1710-08
(and MIL-P 19468). Describes the properties and characteristics
parameters for different grades of PTFE extruded and molded rod
and for heavy-walled tubing.
PTFE
Molded Sheet or Shapes.......ASTM D 3294. Describes
the properties and characteristics parameters for molded PTFE shapes
and molded PTFE sheets.
PTFE
Skived Tape.........................ASTM D 3308. Describes
the properties and characteristics parameters for skived tape (.250
inches and thinner)
Filled Compounds made
With PTFE…………………………….ASTM
D 4745. Describes the properties and characteristics parameters
for filled molding compounds made with PTFE. The specification provides
standards for bulk density, tensile strength and elongation of PTFE
filled with different percentages of glass fiber, glass fiber and
Molybdenum Disulfide, graphite, carbon and graphite, bronze, bronze
and Molybdenum Disulfide and stainless steel.
PTFE Tubing………………………....ASTM
D 1710-08. The tubing is intended for electrical, mechanical, chemical
and medical applications manufactured from extrusion resins made
from PTFE resins.
Molding
and Machining Tolerances
for PTFE resin parts…...................ASTM 3297.
This specification defines tolerances applicable to parts molded
and free sintered from PTFE resins and to machined parts produced
from basic shapes of compression molded or ram extruded resins.
The thermal expansion of PTFE parts between 64F and 70F is non-uniform
due to a critical transition zone characteristic of PTFE resins.
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