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Rochling Sustaplast Sustarin C

Material Properties and Machining Guidelines for Sustarin C, Sustarin C ESD 60, Sustarin ESD 90 and Sustarin C TF.

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

Sustarin C Sustarin C ESD 60 Sustarin C ESD 90
Common Name Acetal Copolymer Acetal Copolymer Static Dissipative Acetal Copolymer Conductive
Chemical Reference POM C POM C POM C
Specific Gravity D792 - 1.41 1.33 1.44
Tensile Strength D638 PSI 9,500 11,000 11,400
Tensile Modulus D638 PSI 400,000 425,000 425,000
Tensile Elongation D638 % 40 30 5
Flexural Strength D790 PSI 12,000 18,000 16,000
Flexural Modulus D790 PSI 400,000 450,000 1,050,000
Shear Strength D732 PSI 8,000 6,000 8,000
Compressive Strength D695 PSI 15,000 8,000 15,000
Rockwell Hardness D785 M M88 M86 M86
Rockwell Hardness D785 R R120 R120 R120
Durometer Shore D D2240 - D85 D86 D86
Izod Impact Notched D256 ft. lb/in 1.2 1 1
Coefficient of Friction (dry vs. steel) Dynamic 0.21 0.2 0.12
Coefficient of Linear Thermal Expansion D696 in/in/°F 5.5 x 10-5 4.8 x 10-5 4.4 x 10-5
Heat Deflection
Temperature @ 66 psi
D648 °F 320
Heat Deflection
Temperature @ 264 psi
D648 °F 225 250 300
Melting Point °F 330 330 330
Continuous Use °F 180 180 200
Thermal Conductivity BTU
in/hr/ft2/°F
1.6 1.7 1.7
Volume Resistivity D257 ohm–cm 1016 109–1011 104
Dieletric Strength D149 volts/mil 450 400 400
Dieletric Constant D150 1 MHz 3.8 3.7 3.7
Flammability UL 94 HB HB HB
Dissipation Factor D150 1 MHz 0.004 0.005 0.005
Water Absorption 24 hours D570 % by weight 0.2 1 0.5
Water Absorption Saturation D570 % by weight 0.9 2 1
FDA Compliance Yes 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

Sustarin C Sustarin C ESD 60 Sustarin C ESD 90 Sustarin C TF
SAWING
a
clearance angle (°)
min 20 20 20 20
max 30 30 30 30
b
rake angle (°)
min 0 0 0 0
max 5 5 5 5
cutting speed (ft/min) min 131 131 131 131
max 328 328 328 328
c
tooth pitch (in)
min gt;.079 .079 .079 .079
max .197 .197 .197 .197
TURNING
a
clearance angle (°)
min 6 6 6 6
max 8 8 8 8
b
rake angle (°)
min 0 0 0 0
max 5 5 5 5
d
setting angle (°)
min 45 45 45 45
max 60 60 60 60
cutting speed (ft/min) min 984 984 984 984
max 1969 1969 1969 1969
feed (in/rev) min .004 .004 .004 .004
max .157 .157 .157 .157
DRILLING
a
clearance angle (°)
min 5 5 5 5
max 10 10 10 10
b
rake angle (°)
min 15 15 15 15
max 30 30 30 30
d
acute angle (°)
min 90 90 90 90
cutting speed (ft/min) min 164 164 164 164
max 656 656 656 656
feed (in/rev) min .004 .004 .004 .004
max .012 .012 .012 .012
MILLING
a
clearance angle (°)
min 5 5 5 5
max 15 15 15 15
b
rake angle (°)
min 5 5 5 5
max 15 15 15 15
cutting speed (ft/min) min 820 820 820 820
max 1640 1640 1640 1640
SawingTurning Drilling Milling