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Rulon Bearings

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GEHR Plastics PP Polypropylene, Natural  (discontinued **)
Categories: Polymer; Thermoplastic; Polypropylene (PP)

Material Notes: Polypropylene shows a high mechanical strength and a tensile strength, but a low notched impact strength. PP resists stress cracking and it is easy to weld. The chemical and electrical properties are very good. The continuous operating temperatures range between 5°C and 100°C.

Properties

  • low density
  • high heat resistance
  • high tensile strength
  • high surface strength
  • high chemical resistance
  • low oxidation resistance
  • low abrasion resistance
  • brittle in the coldness
  • HF-welding not possible
  • natural color is not weather resistant
Applications
  • pumps
  • valves
  • gaskets
  • supporting stands
  • spacer for the plating
  • particles for toys

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesOriginal ValueComments
Specific Gravity 0.900 g/ccISO 1183
Moisture Absorption at Equilibrium 0.010 %ISO 62
Water Absorption at Saturation 0.20 %ISO 62
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 76ISO 868
Tensile Strength, Yield 36.0 MPaISO 527
Elongation at Break >= 70 %ISO 527
Elongation at Yield 9.0 %ISO 527
Modulus of Elasticity 1.725 GPaISO 527
Charpy Impact Unnotched NBISO 179
Charpy Impact, Notched 9.00 kJ/m²ISO 179
 
Electrical PropertiesOriginal ValueComments
Surface Resistance >= 1.00e+13 ohmIEC 60093
Dielectric Strength 40.0 kV/mmIEC 60243-1
 
Thermal PropertiesOriginal ValueComments
CTE, linear 150 µm/m-°CISO 11359
Melting Point 165 °CDIN EN ISO 3146
Maximum Service Temperature, Air 100 °CUL 746B
Deflection Temperature at 0.46 MPa (66 psi) 90.0 °CISO 75
Deflection Temperature at 1.8 MPa (264 psi) 54.0 °CISO 75
Vicat Softening Point 90.0 °CVST/B/50; ISO 306
 150 °CVST/A/50; ISO 306
Minimum Service Temperature, Air 5.00 °CUL 746B
Glass Transition Temp, Tg 10.0 °CDIN EN ISO 3146
Flammability, UL94 HBUL 94
Oxygen Index 18 %ASTM D2863
 
Compliance PropertiesOriginal ValueComments
FDA YesPhysiological indifference
 
Descriptive Properties
Acid Resistanceyes
Aromatic Resistanceno
Bondabilityyes
ColorNatural
Hydrocarbonate Resistanceyes
Hydroxide Resistanceyes
Ketone Resistanceyes
Physiological indifferenceyes, EEC
Resistance Against Hot Wateryes

**
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