Arnite® LT TV4 261

Laser Transparent Black, Laser Weldable

General Information

Arnite® (PBT, PET and blends) are high-performance engineering plastics that combine high strength and rigidity with excellent processing characteristics. As a result, Arnite® A (PET)  and Arnite® T (PBT) are well suited for a broad range of automotive, electrical & electronic and consumer goods applications.
A wide portfolio of Arnite® is available including unreinforced, reinforced and flame retardant grades.
Product
Arnite® LT TV4 261 is a newly created and improved laser transparent PBT. Its high transparency enables twice as fast laser welding cycle times while still ensuring high dimensional stability for safe and reliable parts (airtight, watertight). It has high design flexibility for molding thin-walled parts as well as thicker parts that require laser-welding, e.g. for rapidly bonding radomes and back covers.
Special features
Regulatory Affairs
Processing technology

Rheological properties

Melt volume-flow rate
17
cm³/10min
Temperature
275
°C
Load
2.16
kg
Molding shrinkage (parallel)
0.35
%
Molding shrinkage (normal)
1.35
%

Mechanical properties

Tensile modulus
10200
MPa
Stress at break
135
MPa
Strain at break
2.5
%
Flexural modulus
9200
MPa
Flexural strength
220
MPa
Charpy impact strength (+23°C)
45
kJ/m²
Charpy impact strength (-30°C)
37
kJ/m²
Charpy notched impact strength (+23°C)
8.7
kJ/m²
Charpy notched impact strength (-30°C)
7.9
kJ/m²

Thermal properties

Melting temperature (10°C/min)
223
°C
Temp. of deflection under load (1.80 MPa)
205
°C
Temp. of deflection under load (0.45 MPa)
220
°C

Electrical properties

Electric strength
37
kV/mm
Comparative tracking index
375
V

Other properties

Density
1540
kg/m³