Arnitel® CM551

Heat Resistant Copolyester

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
Extrusion, Injection Molding
Design challenge
Degradation & Stability | Thermo-oxidative stability

Rheological properties

Melt volume-flow rate
8
cm³/10min
Temperature
230
°C
Load
2.16
kg

Mechanical properties

Tensile modulus
160
MPa
Yield stress
16
MPa
Yield strain
38
%
Nominal strain at break
>50
%
Charpy notched impact strength (+23°C)
N
kJ/m²
Charpy notched impact strength (-30°C)
5.6
kJ/m²
Izod notched impact strength (+23°C)
N
kJ/m²
Izod notched impact strength (-20°C)
9
kJ/m²
Izod notched impact strength (-30°C)
6.4
kJ/m²

Thermal properties

Melting temperature (10°C/min)
205
°C
Glass transition temperature (10°C/min)
-10
°C
Vicat softening temperature (50°C/h 50N)
61
°C
Coeff. of linear therm. expansion (normal)
1.9
E-4/°C

Electrical properties

Relative permittivity (100Hz)
4.34
-
Relative permittivity (1 MHz)
3.58
-
Dissipation factor (100 Hz)
212
E-4
Dissipation factor (1 MHz)
460
E-4
Volume resistivity
>1E13
Ohm*m
Electric strength
15
kV/mm
Comparative tracking index
600
V

Other properties

Water absorption in water at 23°C after 24h
0.27
%
Humidity absorption
0.11
%
Density
1240
kg/m³

Mechanical properties (TPE)

Stress at 5% strain
8.4
MPa
Stress at 10% strain
12
MPa
Stress at 50% strain
17
MPa
Stress at 100% strain
16
MPa
Stress at break
32
MPa
Nominal strain at break
450
%
Compression Set under constant strain at 70 °C
42
%
Tear strength
146
kN/m
Shore A Hardness (3s)
98
-
Shore A Hardness (15s)
98
-
Shore D Hardness (3s)
51
-
Shore D Hardness (15s)
51
-

Diagrams

Applications

Wire and Cable Insulation

Industry
Automotive
  • <ul> <li>Arnitel® TPC allows for reliable solutions due its high temperature resistance (class T3 and T4, Class D (150°C) enabling thin and ultra thin wall designs, Class E (175°C) >20 mm2 thick and thin wall)</li> <li>Arnitel® TPC allows for cost effective solutions (up to 50% lower system costs versus ETFE/FEP, 40% weight down versus XL PO at similar costs)</li> <li>Arnitel® TPC allows for sustainable solutions due to availability of halogen free flameretardant grades</li> </ul>