Ultrapolymers
Monday, August 11, 2025
Ultradur® B 4300 G2 High Speed
Units 
BASF Corporation - Polybutylene Terephthalate
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General Information
Product Description
Easy flowing injection molding grade with 10% glass fibers; for rigid, tough and dimensionally stable technical parts (eg timer dials, toggles, knobs, parts for thermostats, oven-door handles, toaster housings and grills).
General  
Material Status 
  • Commercial: Active
Availability 
  • Europe
Filler / Reinforcement 
  • Glass Fiber, 10% Filler by Weight
Features 
  • Good Dimensional Stability
  • Good Flow
  • Good Toughness
  • High Rigidity
 
Uses 
  • Appliance Components
  • Engineering Parts
  • Handles
  • Housings
 
Agency Ratings 
  • EC 1907/2006 (REACH)
RoHS Compliance 
  • RoHS Compliant
Automotive Specifications 
  • FMVSS 302
Appearance 
  • Black
  • Natural Color
 
Forms 
  • Pellets
Processing Method 
  • Injection Molding
Resin ID (ISO 1043)
  • PBT-GF10
Properties 1
Physical
Nominal Value
Unit
Test Method
Density
1.37
g/cm³
ISO 1183
Apparent (Bulk) Density
0.70 to 0.80
g/cm³
 
Melt Volume-Flow Rate (MVR) (250°C/2.16 kg)
28
cm³/10min
ISO 1133
Molding Shrinkage
    ISO 294-4
Across Flow
1.1
%
 
Flow
0.90
%
 
Water Absorption (Saturation, 23°C)
0.40
%
ISO 62
Water Absorption (Equilibrium, 23°C, 50% RH)
0.20
%
ISO 62
Viscosity Number 2
105
cm³/g
ISO 307
Mold Shrinkage 3
     
free, longitudinal
0.59
%
 
free, transverse
1.26
%
 
Mechanical
Nominal Value
Unit
Test Method
Tensile Modulus
4400
MPa
ISO 527-1
Tensile Stress (Break)
85.0
MPa
ISO 527-2
Tensile Strain (Break)
3.9
%
ISO 527-2
Impact
Nominal Value
Unit
Test Method
Charpy Notched Impact Strength (23°C)
3.5
kJ/m²
ISO 179/1eA
Charpy Unnotched Impact Strength
    ISO 179/1eU
-30°C
26
kJ/m²
 
23°C
25
kJ/m²
 
Thermal
Nominal Value
Unit
Test Method
Deflection Temperature Under Load (0.45 MPa, Unannealed)
210
°C
ISO 75-2/B
Deflection Temperature Under Load (1.8 MPa, Unannealed)
165
°C
ISO 75-2/A
Melting Temperature
223
°C
ISO 11357-3
Maximum Service Temperature - short cycle operation
210
°C
 
Electrical
Nominal Value
Unit
Test Method
Surface Resistivity
1.0E+13
ohms
IEC 60093
Volume Resistivity
1.0E+16
ohms·cm
IEC 60093
Relative Permittivity
    IEC 60250
100 Hz
3.60
 
 
1 MHz
3.60
 
 
Dissipation Factor
    IEC 60250
100 Hz
1.2E-3
 
 
1 MHz
0.015
 
 
Comparative Tracking Index (Solution A)
300
V
IEC 60112
Flammability
Nominal Value
Unit
Test Method
Flammability Classification (1.6 mm)
HB
 
IEC 60695-11-10, -20
Processing Information
Injection
Nominal Value
Unit
 
Drying Temperature
80 to 120
°C
 
Drying Time
4.0
hr
 
Suggested Max Moisture
0.040
%
 
Hopper Temperature
80
°C
 
Rear Temperature
250
°C
 
Middle Temperature
255
°C
 
Front Temperature
260
°C
 
Nozzle Temperature
260
°C
 
Processing (Melt) Temp
230 to 275
°C
 
Mold Temperature
60 to 100
°C
 
Screw Speed
< 15
m/min
 
Notes
1Typical properties: these are not to be construed as specifications.
2solution 0,005 g/ml Phenole/1,2 Dichlorbenzol 1:1
3plate with film gate 150*150*3 mm³
 
Customer is responsible for determining whether products and the information in this document are appropriate for Customer’s use and for ensuring that Customer’s workplace and disposal practices are in compliance with applicable laws and other governmental enactments. Seller assumes no obligation or liability for the information in this document. NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED.