Arnitel® UM551

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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.
Product
Due to limited hydrolysis resistance, this material should only be used in dry environments.
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
Yellow Card
Processing technology
Extrusion, Injection Molding
Applications
Have a question? Contact us

Rheological properties

Melt volume-flow rate
13.8
cm³/10min
Temperature
230
°C
Load
2.16
kg
Melt flow index MFI
14
g/10min
MFI test temperature
230
°C
MFI test load
2.16
kg
Molding shrinkage (parallel)
1.45
%
Molding shrinkage (normal)
1.35
%

Mechanical properties

Yield stress
15
MPa
Yield strain
22
%
Nominal strain at break
>50
%
Charpy impact strength (-30°C)
6
kJ/m²
Charpy notched impact strength (+23°C)
N
kJ/m²
Charpy notched impact strength (-30°C)
6
kJ/m²

Thermal properties

Melting temperature (10°C/min)
200
°C
Temp. of deflection under load (0.45 MPa)
80
°C
Vicat softening temperature (50°C/h 50N)
85
°C
Coeff. of linear therm. expansion (parallel)
1.6
E-4/°C
Burning Behav. at 0.75 mm nom. thickn.
HB
class
Thickness tested
0.75
mm
Burning Behav. at 1.5 mm nom. thickn.
HB
class
Thickness tested
1.5
mm
UL recognition
Yes
-
Burning Behav. at 3.0 mm nom. thickn.
HB
class
Thickness tested
3
mm
UL recognition
Yes
-
Relative Temperature Index - electrical
160
°C
RTI electrical (Thickness (1) tested)
0.75
mm
Relative Temperature Index - electrical
160
°C
RTI electrical (Thickness (2) tested)
3
mm
Relative Temperature Index - with impact
120
°C
RTI with impact (Thickness (1) tested)
0.75
mm
Relative Temperature Index - with impact
120
°C
RTI with impact (Thickness (2) tested)
3
mm
Relative Temperature Index - without impact
150
°C
RTI without impact (Thickness (1) tested)
0.75
mm
Relative Temperature Index - without impact
150
°C
RTI without impact (Thickness (2) tested)
3
mm

Electrical properties

Comparative tracking index
600
V

Other properties

Water absorption
0.6
%
Humidity absorption
0.25
%
Density
1260
kg/m³

Mechanical properties (TPE)

Tensile modulus
158
MPa
Stress at 10% strain
10.8
MPa
Stress at 50% strain
14.3
MPa
Stress at 100% strain
14.1
MPa
Stress at 300% strain
21
MPa
Stress at break
36
MPa
Strain at break
>300
%
Nominal strain at break
656
%
Tear strength
165
kN/m
Shore D Hardness (3s)
55
-
Shore D Hardness (15s)
55
-

Diagrams

Applications

Convoluted Tubes

Industry
Automotive
Material
Arnitel convoluted tubing is used in class-D and class-E cable trees. The primary purpose is usage in high temperature areas of the car.}
More information

Support Springs

Industry
Consumer goods
Material
Low creep flexing solution for slats and mattresses, creating ultimate sleep comfort by changing durometer per section of your bed.}
More information

Wire and Cable Insulation

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