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Rochling Sustaplast Susta PC and Sustanat PC GF 20

Material Properties and Machining Guidelines for Susta PC and Sustanat PC GF 20

SheetsSheets
extruded 3/8" – 6" x 24" x 48"
5/8" – 2" x 48" x 96"
5/8" – 2" x 48" x 120"
calandered 1/8" – 1/2" x 48" x 96"
1/8" – 1/2" x 48" x 120"
cast 1/4" – 4" x 24" x 48"
1/4" – 4" x 48" x 96"
RodsRods
extruded 1/4" – 6" dia, 10 ft lengths
7" – 12" dia, 3 ft lengths
cast 2" – 4–1/2" dia, 10 ft lengths
5" – 12–1/4" dia, 4 ft lengths
13" – 23–1/2" dia, 2 ft lengths
TubesTubes
extruded 3/4" OD x 7/16" ID up to
20–1/2" OD x 13–1/2" ID
cast 4" OD x 2" ID up to
42" OD x 37" ID

Material Selection pdf

Susta PC Sustanat PC GF 20
Common Name Polycarbonate Polycarbonate Glass Filled 20%
Chemical Reference PC 20% Glass Filled PC–5 17
Specific Gravity D792 - 1.20 1.35
Tensile Strength D638 PSI 10,000 16,000
Tensile Modulus D638 PSI 320,000 860,000
Tensile Elongation D638 % 75 6
Flexural Strength D790 PSI 13,000 19,000
Flexural Modulus D790 PSI 340,000 800,000
Shear Strength D732 PSI 9,000
Compressive Strength D695 PSI 11,500 16,000
Rockwell Hardness D785 M M75 M91
Rockwell Hardness D785 R R126 R122
Durometer Shore D D2240 - D80 D87
Izod Impact Notched D256 ft. lb/in 10 2
Coefficient of Friction (dry vs. steel) Dynamic 0.38 0.22
Coefficient of Linear Thermal Expansion D696 in/in/°F 3.8 x 10-5 1.5 x 10-5
Heat Deflection
Temperature @ 66 psi
D648 °F 295 298
Heat Deflection
Temperature @ 264 psi
D648 °F 280 295
Melting Point °F 310 330
Continuous Use °F 250 260
Thermal Conductivity BTU
in/hr/ft2/°F
1.3 1.47
Volume Resistivity D257 ohm–cm >1013 1017
Dieletric Strength D149 volts/mil 380 490
Dieletric Constant D150 1 MHz 3.2 3.13
Flammability UL 94 V–0 V–1
Dissipation Factor D150 1 MHz 0.006 0.0009
Water Absorption 24 hours D570 % by weight 0.15 0.16
Water Absorption Saturation D570 % by weight 0.35 0.29
FDA Compliance No No

Test state: Dry. The specified electrical characteristic values were measured on the natural–colored, dry material. In the case of other colorings (particularly black) or moist material, significant changes in the electrical characteristic values can occur.

The short–term max. service temperature applies only to applications with extremely low loading over a few hours. The long–term max. service temperature is based on the thermal aging of the plastics due to oxidation, which results in a decrease in the mechanical properties.

Temperatures are specified which, after a minimum period of 5000 hours, cause a decrease in the tensile strength (measured at room temperature) by 50% compared with the initial value. This value does not provide any information about the mechanical strength of the material at high application temperatures. In the case of thick–walled parts, oxidation at high temperatures only affects the surface layer, which can be better protected by adding antioxidants. The core area of the parts always remains intact. The minimum service temperature is determined decisively by a possible shock or impact load during use.

The specified values refer to low impact loading. The specified values have been calculated as average values on the basis of numerous individual measurements and correspond to our present state of knowledge. They merely serve as information about our products and as guidance values when choosing materials. They are by no means to be construed as a legally binding promise of any specific properties or suitability for specific purposes.

Since the properties are also governed by the dimensions of the semi–finished products and the degree of crystallization (e.g. nucleation through pigments), the actual values of the properties of a specific product can differ slightly from the information specified.

The following applies for polyamides: As a result of the absorption of moisture, the mechanical properties change, the material becomes tougher, more shock–resistant, the modulus of elasticity diminishes. Depending on the ambient atmosphere, temperature and time for the moisture to be absorbed, only one specific surface layer is however affected by the changes in properties. In the case of thick–walled parts, the core area remains unchanged.

The mechanical properties of fiber–reinforced materials have been calculated on injection–molded test specimens in grain direction. For the design of structures and the definition of material specifications, we are happy to supply you with appropriate information for your application upon request.

FDA Compliance based upon unfilled resins. Any special colors or additives can affect the compliance.

Machining Guidelines pdf

Susta PC Sustanat PC GF 20
SAWING
a
clearance angle (°)
min 15 15
max 30 30
b
rake angle (°)
min 5 5
max 80 80
cutting speed (ft/min) min 98 98
max 262 262
c
tooth pitch (in)
min .118 .118
max .315 .315
TURNING
a
clearance angle (°)
min 5 5
max 10 10
b
rake angle (°)
min 6 6
max 8 8
d
setting angle (°)
min 45 45
max 60 60
cutting speed (ft/min) min 820 820
max 984 984
feed (in/rev) min .004 .004
max .020 .020
DRILLING
a
clearance angle (°)
min 8 8
max 10 10
b
rake angle (°)
min 10 10
max 20 20
d
acute angle (°)
min 90 90
cutting speed (ft/min) min 164 164
max 328 328
feed (in/rev) min .008 .008
max .012 .012
MILLING
a
clearance angle (°)
min 10 10
max 20 20
b
rake angle (°)
min 5 5
max 15 15
cutting speed (ft/min) min 984 984
max 1640 1640
SawingTurning Drilling Milling