Arnitel® CM551

Heat Resistant Copolyester

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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
General Document
Regulatory Affairs
  • Absence Declaration BNST2023-11-16
  • Absence Declaration Biocidal Products2023-11-16
  • Absence Declaration DMF (2009/251/EC: Dimethylfumarate)2023-11-16
  • Absence Declaration ELV (2000/53/EC: Heavy metals)2024-02-15
  • Absence Declaration EPA 20 High Priority Substances 20192023-11-16
  • Absence Declaration Food Allergens2023-11-16
  • Absence Declaration NMP (N-Methylpyrrolidone)2023-11-16
  • Absence Declaration Nano Materials2023-11-16
  • Absence Declaration Ozone Depleting Chemicals2024-06-27
  • Absence Declaration PAH (Polycyclic Aromatic Hydrocarbons)2023-11-16
  • Absence Declaration PBT chemicals under TSCA section 6(h)2023-11-16
  • Absence Declaration PFAS2024-03-05
  • Absence Declaration POPs (Persistent Organic Pollutants)2024-09-04
  • Absence Declaration Phthalates (2005/84/EC: DEHP, DBP, BBP,DINP,DIDP, DNOP)2023-11-16
  • Absence Declaration Red Phosphorus2023-11-16
  • Absence Declaration opBDE (2003/11/EC: Octa- / Pentabromodiphenylether)2023-11-16
  • CALIFORNIA PROPOSITION 65 (INDUSTRIAL USE)2024-01-02
  • Compliance Statement EU Sanctions and Embargos2024-05-16
  • Conflict minerals declaration (EICC, GeSI)2024-05-15
  • Deforestation Statement, Regulation (EU) 2023/1115 (EUDR)2024-09-19
  • Packaging Declaration EU Decision 97/129/EC (labelling)2024-04-17
  • Packaging, Packaging Waste and CONEG declaration (94/62/EC)2021-12-06
  • REACH Registration Statement2024-03-27
  • REACH STATEMENT KOREA2023-11-16
  • REACH STATEMENT TURKYE2023-11-16
  • RoHS Statement (2011/65/EC: Heavy metals)2024-02-01
  • SVHC, REACH Annex XIV and –XVII Statement2024-11-08
Processing technology
Extrusion, Injection Molding
Design challenge
Degradation & Stability | Thermo-oxidative stability
Applications
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Rheological properties

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

Mechanical properties

Charpy impact strength (+23°C)
N
kJ/m²
Charpy impact strength (-30°C)
N
kJ/m²
Charpy notched impact strength (+23°C)
N
kJ/m²
Charpy notched impact strength (-30°C)
6
kJ/m²
Izod notched impact strength (+23°C)
N
kJ/m²
Izod notched impact strength (-20°C)
N
kJ/m²
Izod notched impact strength (-30°C)
6.4
kJ/m²

Mechanical properties (die cutting)

Stress at break (normal)
34
MPa
Stress at 5% strain (normal)
8.5
MPa
Stress at 10% strain (normal)
12
MPa
Stress at 50% strain (normal)
16
MPa
Stress at 100% strain (normal)
15
MPa
Strain at break (normal)
660
%
Tear strength (normal)
145
kN/m
Tear strength (parallel)
160
kN/m

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
25
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)

Tensile modulus
160
MPa
Stress at 5% strain
8.4
MPa
Stress at 10% strain
12
MPa
Stress at 50% strain
16
MPa
Stress at 100% strain
16
MPa
Stress at break
34
MPa
Strain at break
>300
%
Nominal strain at break
450
%
Compression Set under constant strain at 23 °C
18
%
Compression Set under constant strain at 70 °C
42
%
Shore D Hardness (3s)
51
-
Shore D Hardness (15s)
51
-

JSON SPT

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

Diagrams

Applications

Wire and Cable Insulation

Industry
Automotive
Material
Arnitel® UM551 in use for convoluted tubes or cable protection under-the-bonnet.}
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