Arnitel® EL740

Injection Molding

General Information

Arnitel® is a high-performance ThermoPlastic Copolyester (TPC) that offers you a unique combination of flexibility, high temperature resistance and strength - plus excellent processing characteristics.
In industries ranging from automotive to E&E, Arnitel® is increasingly being as a lighter, smarter, greener alternative to conventional rubbers – reducing environmental impact and ultimately, system costs.
The product is supported by an experienced and knowledgeable global team continuously working on new ideas and applications, as well as exploring new markets. By listening to your needs and understanding your process and products, we develop solutions that make a real difference.
Special features
Regulatory Affairs
Processing technology
Injection Molding
Automotive OEM
BMW
OEM Specification
GS 93016 (2011-01)

Rheological properties

Melt volume-flow rate
18
cm³/10min
Temperature
230
°C
Load
2.16
kg
Molding shrinkage [parallel]
1.75
%
Molding shrinkage [normal]
2
%

Mechanical properties

Tensile modulus
800
MPa
Yield stress
36
MPa
Yield strain
17
%
Nominal strain at break
>50
%
Charpy notched impact strength (+23°C)
10
kJ/m²
Charpy notched impact strength (-30°C)
6
kJ/m²
Izod notched impact strength (+23°C)
9
kJ/m²

Thermal properties

Melting temperature (10°C/min)
221
°C
Temp. of deflection under load (0.45 MPa)
120
°C
Vicat softening temperature (50°C/h 50N)
160
°C
Coeff. of linear therm. expansion (parallel)
1.65
E-4/°C
Coeff. of linear therm. expansion (normal)
1.65
E-4/°C
Burning Behav. at 1.5 mm nom. thickn.
HB
class
Thickness tested
1.6
mm
UL recognition
Yes
-
Glow Wire Ignition Temperature GWIT
850
°C
GWIT (Thickness (1) tested)
1
mm
Relative Temperature Index - electrical
50
°C
RTI electrical (Thickness (1) tested)
1.5
mm
Relative Temperature Index - with impact
50
°C
RTI with impact (Thickness (1) tested)
1.5
mm
Relative Temperature Index - without impact
50
°C
RTI without impact (Thickness (1) tested)
1.5
mm

Electrical properties

Relative permittivity (100Hz)
3.7
-
Relative permittivity (1 MHz)
3.3
-
Dissipation factor (1 MHz)
300
E-4
Volume resistivity
1E13
Ohm*m
Electric strength
23
kV/mm
Comparative tracking index
600
V

Other properties

Water absorption
0.6
%
Humidity absorption
0.15
%
Density
1290
kg/m³
Apparent density
830
kg/m³

Rheological calculation properties

Density of melt
950
kg/m³
Thermal conductivity of melt
0.1
W/(m K)
Spec. heat capacity melt
1900
J/(kg K)
Eff. thermal diffusivity
5.54E-8
m²/s

Mechanical properties (TPE)

Stress at 5% strain
30
MPa
Stress at 10% strain
34
MPa
Stress at 50% strain
25
MPa
Stress at 100% strain
26
MPa
Stress at break
43
MPa
Strain at break
250
%
Nominal strain at break
360
%
Compression Set under constant strain at 70 °C
35
%
Tear strength
215
kN/m
Shore D Hardness (3s)
70
-

Diagrams

Applications

Optical Fiber Cable guides and connectors

Industry
Building & construction
  • Arnitel® offers high flexibility in combination with excellent dimensional stability
  • Arnitel allows for ultra thin walls, enabling low cost connectors
  • Arnitel offers easy coloring

Optical Fiber loose buffer tubes

Industry
Building & construction
  • Arnitel® offers high extrusion speeds due to material properties
  • Arnitel has high flexibility, making bending easier
  • Arnitel offers excellent surface smoothness, creating possibilities for after processing

Screw Drivers and Plyers

Industry
Consumer goods
  • Arnitel® TPC allows for reliable solutions due to its retention of flexibility even at temperatures down to -40°C or at elevated temperatures up to 100 ˚C
  • Arnitel® TPC allows for solutions with nice toch & feel characteristics