VALOX™ 325 resin

About
General purpose, unreinforced, improved processing. Applications like sprinklers and nozzles, pumps, door handle, tank covers, pens, pencils etc.&&

Product Description
SupplierSABIC
Genericpolybutylene terephthalate
Material StatusCommercial: Active
FeaturesExcellent Processability,HB
AvailabilitysNorth America,Asia Pacific
Process MethodsInjection Molding

Technical Data
PHYSICALNominal valueUnitTest method
Density1.31g/cm³ASTM D792
Specific volume0.770cm³/gASTM D792
Shrinkage rate Internal Method
MD0.90 to 1.6%Internal Method
MD1.5 to 2.3%Internal Method
Water absorption rate
Equilibrium, 23 ℃0.34%ASTM D570
24hr0.080%ASTM D570
Weathering resistancef1 UL 746C

IMPACTNominal valueUnitTest method
Impact strength of cantilever beam notch
23℃1600J/mASTM D4812
23℃53J/mASTM D256
Drop hammer impact
23℃40.7JASTM D3029

THERMALNominal valueUnitTest method
Hot deformation temperature
1.8 MPa, unannealed, 6.4 mm54.4ASTM D648
0.45 MPa, unannealed, 6.4 mm154ASTM D648
Linear coefficient of thermal expansion
MD ASTM E831
-40 to 40 ℃8.1E-5cm/cm/℃ASTM E831
60 to 138 ℃1.4E-4cm/cm/℃ASTM E831
Relative temperature index
Electrical performance120UL 746
Strength mechanical performance140UL 746
Impact mechanical performance120UL 746

Electrical performanceNominal valueUnitTest method
Volume resistivity> 4.0E+16ohms·cmASTM D257
Dielectric strength ASTM D149
1.6 mm in oil23kV/mmASTM D149
3.2 mm in air16kV/mmASTM D149
3.2 mm in oil16kV/mmASTM D149
Dielectric constant ASTM D150
100 Hz3.30 ASTM D150
1 MHz3.10 ASTM D150
Dissipation factor ASTM D150
100 Hz2.0E-3 ASTM D150
1 MHz0.020 ASTM D150
Arc resistancePLC 4 ASTM D495
Compared to the leakage tracing indexPLC 0 UL 746
High Arc Burning Index (HAI)PLC 0 UL 746
High voltage arc marking rate
HVTRPLC 1 UL 746
Hot wire ignition
HWIPLC 3 UL 746

FLAME CHARACTERISTICSNominal valueUnitTest method
0.80 mmHB UL 94

MECHANICALNominal valueUnitTest method
tensile strength
yield51.7MPaASTM D638
Tensile strain
fracture200%ASTM D638
Bending modulus
50 mm span2340MPaASTM D790
bending strength
Yield, 50 mm span82.7MPaASTM D790
Rockwell hardness
R-level117 ASTM D785

Special valueNominal valueUnitTest method
TD1.0 to 1.7%Internal Method
TD1.6 to 2.4%Internal Method

Process Conditions
injectionNominal valueUnitTest method
Drying temperature121°C
Drying time3.0 to 4.0hr
Drying time, maximum12hr
Recommended maximum moisture content0.020%
Recommended injection volume40 to 80%
Barrel rear temperature232 to 249°C
Barrel middle temperature238 to 254°C
Barrel front temperature243 to 260°C
Nozzle temperature238 to 254°C
Processing (melt) temperature243 to 260°C
Mold temperature49 to 77°C
Back pressure0.345 to 0.689MPa
Screw speed50 to 100rpm
Vent depth0.013 to 0.025mm

Notes
1. Typical properties: these are not to be construed as specifications.
2. 0.75 to 2.3 mm
3. 2.3 to 4.6 mm
4. Type I, 2.0 in/min
5. 0.051 in/min
6. Modified
7. Tungsten Electrode
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