S-Plastics Valox 325MRresin is an unreinforced general purpose injection moulding PBT resin with medium flow characteristics and internal mouldrelease. Applications : key buttons for business machines. This grade is a 325 with release.
| MECHANICAL | Value | Unit | Standard |
| Taber Abrasion, CS-17, 1 kg | 9 | mg/1000cy | S-Plastics Method |
| Tensile Stress, yield, 50 mm/min | 55 | MPa | ISO 527 |
| Tensile Stress, break, 50 mm/min | 50 | MPa | ISO 527 |
| Tensile Strain, yield, 50 mm/min | 6 | % | ISO 527 |
| Tensile Strain, break, 50 mm/min | 25 | % | ISO 527 |
| Tensile Modulus, 1 mm/min | 2400 | MPa | ISO 527 |
| Flexural Stress, yield, 2 mm/min | 80 | MPa | ISO 178 |
| Flexural Modulus, 2 mm/min | 2300 | MPa | ISO 178 |
| Hardness, H358/30 | 85 | MPa | ISO 2039-1 |
| Hardness, Rockwell R | 117 | - | ISO 2039-2 |
| IMPACT | Value | Unit | Standard |
| Izod Impact, unnotched 80*10*4 +23°C | NB | kJ/m² | ISO 180/1U |
| Izod Impact, unnotched 80*10*4 -30°C | NB | kJ/m² | ISO 180/1U |
| Izod Impact, notched 80*10*4 +23°C | 6 | kJ/m² | ISO 180/1A |
| Izod Impact, notched 80*10*4 -30°C | 6 | kJ/m² | ISO 180/1A |
| Charpy 23°C, V-notch Edgew 80*10*4 sp=62mm | 6 | kJ/m² | ISO 179/1eA |
| Charpy Impact, notched, 23°C | 3 | kJ/m² | ISO 179/2C |
| Charpy -30°C, V-notch Edgew 80*10*4 sp=62mm | 3 | kJ/m² | ISO 179/1eA |
| Charpy 23°C, Unnotch Edgew 80*10*4 sp=62mm | NB | kJ/m² | ISO 179/1eU |
| Charpy -30°C, Unnotch Edgew 80*10*4 sp=62mm | NB | kJ/m² | ISO 179/1eU |
| THERMAL | Value | Unit | Standard |
| Thermal Conductivity | 0.16 | W/m-°C | ISO 8302 |
| CTE, 23°C to 80°C, flow | 1.3E-04 | 1/°C | ISO 11359-2 |
| CTE, 23°C to 80°C, xflow | 1.3E-04 | 1/°C | ISO 11359-2 |
| Ball Pressure Test, 125°C +/- 2°C | PASSES | - | IEC 60695-10-2 |
| Vicat Softening Temp, Rate B/50 | 175 | °C | ISO 306 |
| Vicat Softening Temp, Rate B/120 | 175 | °C | ISO 306 |
| HDT/Be, 0.45MPa Edgew 120*10*4 sp=100mm | 110 | °C | ISO 75/Be |
| HDT/Ae, 1.8 MPa Edgew 120*10*4 sp=100mm | 50 | °C | ISO 75/Ae |
| Relative Temp Index, Elec | 120 | °C | UL 746B |
| Relative Temp Index, Mech w/impact | 120 | °C | UL 746B |
| Relative Temp Index, Mech w/o impact | 140 | °C | UL 746B |
| PHYSICAL | Value | Unit | Standard |
| Mold Shrinkage on Tensile Bar, flow (2) | 1.1 - 1.8 | % | S-Plastics Method |
| Mold Shrinkage on Tensile Bar, xflow (2) | 0.9 - 1.8 | % | S-Plastics Method |
| Density | 1.31 | g/cm³ | ISO 1183 |
| Water Absorption, (23°C/sat) | 0.34 | % | ISO 62 |
| Moisture Absorption (23°C / 50% RH) | 0.08 | % | ISO 62 |
| Melt Volume Rate, MVR at 250°C/2.16 kg | 15 | cm³/10 min | ISO 1133 |
| ELECTRICAL | Value | Unit | Standard |
| Volume Resistivity | >1.E+14 | Ohm-cm | IEC 60093 |
| Surface Resistivity, ROA | >1.E+15 | Ohm | IEC 60093 |
| Dielectric Strength, in oil, 3.2 mm | 18 | kV/mm | IEC 60243-1 |
| Relative Permittivity, 50/60 Hz | 3.3 | - | IEC 60250 |
| Relative Permittivity, 1 MHz | 3.1 | - | IEC 60250 |
| Dissipation Factor, 50/60 Hz | 0.002 | - | IEC 60250 |
| Dissipation Factor, 1 MHz | 0.02 | - | IEC 60250 |
| Comparative Tracking Index | 600 | V | IEC 60112 |
| FLAME CHARACTERISTICS | Value | Unit | Standard |
| UL Recognized, 94HB Flame Class Rating (3) | 1.5 | mm | UL 94 |
| UL Recognized, 94HB Flame Class Rating 2nd value (3) | 3 | mm | UL 94 |
| Oxygen Index (LOI) | 20 | % | ISO 4589 |
| Source GMD, last updated:07/29/1999 | |||
| Parameter | ||
| Injection Molding | Value | Unit |
| Drying Temperature | 110 - 120 | °C |
| Drying Time | 2 - 4 | hrs |
| Maximum Moisture Content | 0.02 | % |
| Melt Temperature | 250 - 270 | °C |
| Nozzle Temperature | 240 - 260 | °C |
| Front - Zone 3 Temperature | 245 - 265 | °C |
| Middle - Zone 2 Temperature | 240 - 255 | °C |
| Rear - Zone 1 Temperature | 230 - 245 | °C |
| Hopper Temperature | 40 - 60 | °C |
| Mold Temperature | 40 - 100 | °C |
| Source GMD, last updated:07/29/1999 | ||
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For more information please download the datasheet |
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S-Plastics Valox 325MR.pdf |
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