S-Plastics Valox HR426 resin is AUTOMOTIVE. 30% GR, hydrolytically stable PBT. Excellent strength, stiffness and dimensional stability
| MECHANICAL | Value | Unit | Standard |
| Tensile Stress, brk, Type I, 5 mm/min | 117 | MPa | ASTM D 638 |
| Tensile Strain, brk, Type I, 5 mm/min | 3 | % | ASTM D 638 |
| Flexural Modulus, 1.3 mm/min, 50 mm span | 6890 | MPa | ASTM D 790 |
| Hardness, Rockwell R | 118 | - | ASTM D 785 |
| IMPACT | Value | Unit | Standard |
| Izod Impact, unnotched, 23°C | 801 | J/m | ASTM D 4812 |
| Izod Impact, notched, 23°C | 90 | J/m | ASTM D 256 |
| THERMAL | Value | Unit | Standard |
| HDT, 0.45 MPa, 6.4 mm, unannealed | 218 | °C | ASTM D 648 |
| HDT, 1.82 MPa, 6.4 mm, unannealed | 207 | °C | ASTM D 648 |
| Relative Temp Index, Elec | 140 | °C | UL 746B |
| Relative Temp Index, Mech w/impact | 140 | °C | UL 746B |
| Relative Temp Index, Mech w/o impact | 140 | °C | UL 746B |
| PHYSICAL | Value | Unit | Standard |
| Specific Gravity | 1.53 | - | ASTM D 792 |
| Specific Volume | 0.65 | cm³/g | ASTM D 792 |
| Mold Shrinkage, flow, 1.5-3.2 mm | 0.3 - 0.5 | % | S-Plastics Method |
| Mold Shrinkage, flow, 3.2-4.6 mm | 0.5 - 0.8 | % | S-Plastics Method |
| Mold Shrinkage, xflow, 1.5-3.2 mm | 0.4 - 0.6 | % | S-Plastics Method |
| Mold Shrinkage, xflow, 3.2-4.6 mm | 0.6 - 0.9 | % | S-Plastics Method |
| ELECTRICAL | Value | Unit | Standard |
| Volume Resistivity | 1.9E+16 | Ohm-cm | ASTM D 257 |
| Dielectric Strength, in oil, 3.2 mm | 19.1 | kV/mm | ASTM D 149 |
| Relative Permittivity, 50/60 Hz | 3.24 | - | ASTM D 150 |
| Relative Permittivity, 1 MHz | 3.13 | - | ASTM D 150 |
| Dissipation Factor, 50/60 Hz | 0.003 | - | ASTM D 150 |
| Dissipation Factor, 1 MHz | 0.014 | - | ASTM D 150 |
| Arc Resistance, Tungsten {PLC} | 5 | PLC Code | ASTM D 495 |
| Hot Wire Ignition {PLC) | 0 | PLC Code | UL 746A |
| High Voltage Arc Track Rate {PLC} | 2 | PLC Code | UL 746A |
| High Ampere Arc Ign, surface {PLC} | 3 | PLC Code | UL 746A |
| Comparative Tracking Index (UL) {PLC} | 1 | PLC Code | UL 746A |
| FLAME CHARACTERISTICS | Value | Unit | Standard |
| UL Recognized, 94HB Flame Class Rating (3) | 0.76 | mm | UL 94 |
| HYDROLYTIC STABILITY | Value | Unit | Standard |
| 50% Loss of TS at 120°C/100% RH | 0 | days | S-Plastics Method |
| 50% Loss of TS at 85°C/94% RH | 200 | Days (>) | S-Plastics Method |
| Source GMD, last updated:12/29/1999 | |||
| Parameter | ||
| Injection Molding | Value | Unit |
| Drying Temperature | 60 - 75 | °C |
| Drying Time | 4 - 5 | hrs |
| Drying Time (Cumulative) | 8 | hrs |
| Maximum Moisture Content | 0.05 | % |
| Melt Temperature | 250 - 265 | °C |
| Nozzle Temperature | 245 - 260 | °C |
| Front - Zone 3 Temperature | 250 - 265 | °C |
| Middle - Zone 2 Temperature | 245 - 260 | °C |
| Rear - Zone 1 Temperature | 240 - 255 | °C |
| Mold Temperature | 65 - 90 | °C |
| Back Pressure | 0.3 - 0.7 | MPa |
| Screw Speed | 50 - 80 | rpm |
| Shot to Cylinder Size | 40 - 80 | % |
| Vent Depth | 0.025 - 0.038 | mm |
| Source GMD, last updated:12/29/1999 | ||
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For more information please download the datasheet |
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S-Plastics Valox HR426.pdf |
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