Ultradur® B 4300 G2

About
Ultradur B 4300 G2 is an easy flowing injection molding PBT with 10% glass fiber reinforcement for rigid, tough, and dimensionally stable parts. Applications Typical applications include timer dials, toggles, knobs, parts for thermostats, oven-door handles, toaster housings and grills.&&

Product Description
SupplierBASF
Genericpolybutylene terephthalate
Material StatusCommercial: Active
FeaturesGood Rigidity,Good flexibility,Good Dimensional Stability,Good liquidity,HB
AvailabilitysNorth America,Asia Pacific,Europe
Process MethodsInjection Molding

Technical Data
PHYSICALNominal valueUnitTest method
Density1.37g/cm³ASTM D792 , ISO 1183
Melt Volume Rate
250℃,2.16 kg16.0cm³/10minISO 1133
Shrinkage rate 
MD:3.2 mm0.80%
TD1.4%ISO 294-4
MD1.2%ISO 294-4
Water absorption rate 
saturated0.40%ASTM D570
Saturation, 23 ℃0.40%ISO 62
Balance, 50% RH0.20%ASTM D570
Equilibrium, 23 ℃, 50% RH0.20%ISO 62
Viscosity value
Reduced viscosity115.0ml/gISO 1628

MECHANICALNominal valueUnitTest method
Tensile modulus
23℃4500MPaISO 527-2
tensile strength 
Fracture, 23 ℃90.0MPaASTM D638 , ISO 527-2
Fracture, -40 ℃111MPaISO 527-2
Tensile strain 
Fracture, 23 ℃3.5%ASTM D638 , ISO 527-2
Fracture, -40 ℃2.8%ISO 527-2
Bending modulus 
23℃3930MPaASTM D790
23℃3900MPaISO 178

IMPACTNominal valueUnitTest method
Charpy Notched Impact Strength
23℃5.0kJ/m²ISO 179
Charpy Unnotch Impact strength ISO 179
-30℃38kJ/m²ISO 179
23℃40kJ/m²ISO 179
Impact strength of cantilever beam notch 
23℃48J/mASTM D256
23℃5.0kJ/m²ISO 180

THERMALNominal valueUnitTest method
Hot deformation temperature 
0.45 MPa, unannealed220ASTM D648,ISO 75-2/B
1.8 MPa, unannealed200ASTM D648,ISO 75-2/A
Melting peak temperature223ASTM D3418 , ISO 3146
Linear coefficient of thermal expansion
MD4.5E-51/℃
0.75 mm130UL 746
1.5 mm130UL 746
3.0 mm130UL 746
0.75 mm125UL 746
1.5 mm125UL 746
3.0 mm125UL 746
Relative temperature index UL 746
Electrical performance UL 746
Impact mechanical performance UL 746
0.75 mm125UL 746
1.50 mm125UL 746
3.00 mm140UL 746

Electrical performanceNominal valueUnitTest method
Surface resistivity 
1.5 mm1.0E+13ohmsASTM D257
1.0E+13ohmsIEC 60093
Volume resistivity 
1.50 mm> 1.0E+13ohms·cmASTM D257
> 1.0E+13ohms·cmIEC 60093
Dielectric constant IEC 60250
100 Hz3.60 IEC 60250
1 MHz3.60 IEC 60250
Dissipation factor IEC 60250
100 Hz1.2E-3 IEC 60250
1 MHz0.015 IEC 60250
Compared to the leakage tracing index300VIEC 60112

FLAME CHARACTERISTICSNominal valueUnitTest method
Flame retardant level UL 94
1.50 mmHB UL 94
3.00 mmHB UL 94

Process Conditions
injectionNominal valueUnitTest method
Drying temperature100 to 120°C
Drying time4.0hr
Recommended maximum moisture content0.040%
Processing (melt) temperature250 to 270°C
Mold temperature60 to 100°C
Injection pressure3.50 to 12.5MPa
Injection speed快速 
Back pressure< 1.00MPa

Notes
1. Typical properties: these are not to be construed as specifications.
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