Pom properties data sheet _ gehr
- 1. Technical Data Sheet Polyoxymethylene POM-C I. Physical Properties Test method Unit Value 1. Specific gravity (ρ) ISO 1183 g/cm³ 1,39 2. Water absorption DIN 53495 % 0,2 3. Maximum permissible service temp - - - (no stronger mechanical stress involved) Upper temperature limit - °C 110 Lower temperature limit - °C -50 II. Mechanical Properties Test method Unit Value 1. Tensile strength at yield ISO 527 MPa 63 2. Elongation at yield. (εS) ISO 527 % 10 3. Tensile strength at break (σR) ISO 527 MPa - 4. Elongation at break (εR) ISO 527 % 31 5. Impact strength (an) ISO 179 kJ/m2 no break 6. Notch impact strength (ak) ISO 179 kJ/m2 6 7. Ball indentation / Rockwell hardness ISO 2039-1 MPa 135 8. Shore-D DIN 53505 85 9. Flexural strength (σB 3,5 %) ISO 178 MPa - 10. Modulus of elasticity (Et) ISO 527 MPa 2600 III. Thermal Properties Test method Unit Value 1. Vicat-softening point VST/B/50 ISO 306 °C 150 VST/A/50 ISO 306 °C - 2. Heat deflection temperature HDT/B ISO 75 °C 155 HDT/A ISO 75 °C 95 3. Coefficient of linear thermal expansion α DIN 53752 K-1∗10-4 1,1 4. Thermal conductivity at 20 °C (λ) DIN 52612 W/(m∗K) 0,31 IV. Electrical Properties Test method Unit Value 1. Volume resistivity VDE 0303 Ω∗cm ≥1013 2. Surface resistivity (Ro) VDE 0303 Ω ≥1013 3. Dielectric constant at 1MHz (εr) DIN 53483 - 3,8 4. Dielectric loss factor at 1 MHz (tanδ) DIN 53483 - 0,005 5. Dielectric strength VDE 0303 kV/mm 40 6. Tracking resistance DIN 53480 - CTI 600 V. Additional Data Test method Unit Value 1. Bond ability - - fair 2. Friction coefficient DIN 53375 - 0,35 3. Flammability UL 94 - HB 4. UV stabilisation - - fair All values are attributes of the used raw materials. The physical data contained in this table are typical values. They are obtained on test specimens under specific conditions and represent average values of a large number of tests. The results obtained on this tests specimens cannot be applied to finished parts without reservations, as behaviour is influenced by processing and shaping. Reproduction only with our definite permis- sion. Subject to change without notice. Page 1 of 1 Date: 11/04