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Ultradur
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(PBT)
ULTRADUR® B4440 R01 UNCOLORED POLYBUTHYLENE TEREPHTHALATE
Performance Polymers
ULTRADUR® B4440 R01 UNCOLORED POLYBUTHYLENE TEREPHTHALATE
(PBT) Polybutylene terephthalate
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Technical Properties
Rheological properties
Property Name
Test Method
Unit
Values
Melt volume-flow rate
ISO 1133
cm³/10min
10.00
Mechanical properties
Property Name
Test Method
Unit
Values
Yield strain, 50mm/min
ISO 527-1/-2
%
4.50
Charpy impact strength ISO 179-1eU (23°C)
ISO 179/1eU
kJ/m²
40.00
Charpy notched impact strength ISO 179/1eA (23°C)
ISO 179/1eA
kJ/m²
3.50
Charpy impact strength ISO 179/1eU (-30°C)
ISO 179/1eU
kJ/m²
35.00
Yield stress, 50mm/min
ISO 527-1/-2
MPa
28.00
Other properties
Property Name
Test Method
Unit
Values
Water absorption, equilibrium in water at 23°C
similar to ISO 62
%
0.40 - 0.40
Moisture absorption, equilibrium 23°C/50% r.h.
similar to ISO 62
%
0.25 - 0.25
Density
ISO 1183
kg/m³
1310.00
Thermal properties
Property Name
Test Method
Unit
Values
HDT B (0.45 MPa)
ISO 75-1/-2
°C
135.00
HDT A (1.80 MPa)
ISO 75-1/-2
°C
55.00
Melting temperature, DSC (10°C/min)
ISO 11357-1/-3
°C
223.00 - null
Thickness tested (b1)
IEC 60695-11-10
mm
0.40
Electrical properties
Property Name
Test Method
Unit
Values
Volume resistivity
IEC 62631-3-1
Ohm.m
10000000000000.00
Material specific properties
Property Name
Test Method
Unit
Values
Viscosity number
ISO 307, 1157, 1628
cm³/g
125.00
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