Sabic Valox 357U DESCRIPTION
Sabic valox 357U is an unreinforced, UV stabilized, impact modified flame retardant Polybutylene Terephthalate/Polycarbonate (PBT) injection moldable grade. It has excellent chemical resistance and a UL94V0@0.64mm and 5VA@3.0mm flame rating. This is a good candidate for applications in the electrical industry including bobbins, switches, and enclosures.version of valox 357 is Nonblooming flame retardant.
Property
| MECHANICAL | Value | Unit | Standard |
| Tensile Stress, yld, Type I, 50 mm/min | 48 | MPa | ASTM D 638 |
| Tensile Stress, brk, Type I, 50 mm/min | 48 | MPa | ASTM D 638 |
| Tensile Strain, brk, Type I, 50 mm/min | 110 | % | ASTM D 638 |
| Flexural Stress, yld, 1.3 mm/min, 50 mm span | 82 | MPa | ASTM D 790 |
| Flexural Stress, brk, 1.3 mm/min, 50 mm span | 82 | MPa | ASTM D 790 |
| Flexural Modulus, 1.3 mm/min, 50 mm span | 2060 | MPa | ASTM D 790 |
| Hardness, Rockwell R | 117 | – | ASTM D 785 |
| IMPACT | Value | Unit | Standard |
| Izod Impact, unnotched, 23°C | 3204 | J/m | ASTM D 4812 |
| Izod Impact, notched, 23°C | 534 | J/m | ASTM D 256 |
| Gardner, 23°C | 43 | J | ASTM D 3029 |
| Modified Gardner, 23°C | 43 | J | ASTM D 3029 |
| THERMAL | Value | Unit | Standard |
| HDT, 0.45 MPa, 6.4 mm, unannealed | 137 | °C | ASTM D 648 |
| HDT, 1.82 MPa, 6.4 mm, unannealed | 98 | °C | ASTM D 648 |
| CTE, -40°C to 40°C, flow | 9.18E-05 | 1/°C | ASTM E 831 |
| CTE, 60°C to 138°C, flow | 1.24E-04 | 1/°C | ASTM E 831 |
| 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 |
| Specific Gravity | 1.34 | – | ASTM D 792 |
| Specific Volume | 0.75 | cm³/g | ASTM D 792 |
| Water Absorption, 24 hours | 0.08 | % | ASTM D 570 |
| Mold Shrinkage, flow, 0.75-2.3 mm | 0.8 – 1.1 | % | SABIC Method |
| Mold Shrinkage, flow, 2.3-4.6 mm | 1 – 1.4 | % | SABIC Method |
| Mold Shrinkage, xflow, 0.75-2.3 mm | 0.9 – 1.3 | % | SABIC Method |
| Mold Shrinkage, xflow, 2.3-4.6 mm | 1.2 – 1.6 | % | SABIC Method |
| ELECTRICAL | Value | Unit | Standard |
| Volume Resistivity | >1.2E+16 | Ohm-cm | ASTM D 257 |
| Dielectric Strength, in air, 3.2 mm | 18.5 | kV/mm | ASTM D 149 |
| Dielectric Strength, in oil, 1.6 mm | 25.1 | kV/mm | ASTM D 149 |
| Dielectric Strength, in oil, 3.2 mm | 18.5 | kV/mm | ASTM D 149 |
| Relative Permittivity, 100 Hz | 3.2 | – | ASTM D 150 |
| Relative Permittivity, 1 MHz | 3.2 | – | ASTM D 150 |
| Dissipation Factor, 100 Hz | 0.003 | – | ASTM D 150 |
| Dissipation Factor, 1 MHz | 0.03 | – | ASTM D 150 |
| Arc Resistance, Tungsten {PLC} | 6 | PLC Code | ASTM D 495 |
| Hot Wire Ignition {PLC) | 2 | PLC Code | UL 746A |
| High Voltage Arc Track Rate {PLC} | 3 | PLC Code | UL 746A |
| High Ampere Arc Ign, surface {PLC} | 3 | PLC Code | UL 746A |
| Comparative Tracking Index (UL) {PLC} | 2 | PLC Code | UL 746A |
| FLAME CHARACTERISTICS | Value | Unit | Standard |
| UL Recognized, 94HB Flame Class Rating (3) | 0.45 | mm | UL 94 |
| UL Recognized, 94V-0 Flame Class Rating (3) | 0.63 | mm | UL 94 |
| UL Recognized, 94-5VA Rating (3) | 2.99 | mm | UL 94 |
| CSA (See File for complete listing) | LS88480 | File No. | CSA LISTED |
| Oxygen Index (LOI) | 30 | % | ASTM D 2863 |
| UV-light, water exposure/immersion | F2 | – | UL 746C |
| Source GMD, last updated:01/05/2000 | |||
Processing
| Parameter | ||
| Injection Molding | Value | Unit |
| Drying Temperature | 120 | °C |
| Drying Time | 3 – 4 | hrs |
| Drying Time (Cumulative) | 12 | hrs |
| Maximum Moisture Content | 0.02 | % |
| 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 | 50 – 75 | °C |
| Back Pressure | 0.3 – 0.7 | MPa |
| Screw Speed | 50 – 100 | rpm |
| Shot to Cylinder Size | 40 – 80 | % |
| Vent Depth | 0.025 – 0.038 | mm |
| Source GMD, last updated:01/05/2000 | ||
Hot-sale product(in stock)
PBT: 325,325FC,310,310SE0
PC+PBT: 357 357U,5220U,V3900WX
PBT + glass filled: DR51, DR48, 420 420se0, 553, 508, 420HP
For more information please download the datasheet
Company Profile
1.Professional focus
Professional engineer service team with more than 15 years of experience; Provide a complete set of solutions and services from material sales, quality appraisal, mold design, molding and processing.
2.Perfect service
We have served many high-quality and excellent domestic and foreign enterprises, and We understand the customers’purchasing, product and service needs; From response time, price advantage, problem handling, etc., we provide comprehensive services based on customer needs in multiple dimensions.
3. Inventory supporting
Abundant inventory supporting resources, which are located in Guangzhou, Dongguan, Shenzhen free trade zone and Hong Kong. It has set up warehouses to stock goods, with a standing stock of more than 1000 tons, which can meet the timely spot purchase demand of customers and ensure the reliability and stability of the customer’s material supply chain.
4.Logistics distribution
We have long-term and stable logistics partners. According to the needs of customers, we formulate efficient istribution plans and deliver high-quality products to customers in time.
5. Speed advantage
Professional engineer service team with more than 15 years of experience; Provide a complete set of solutions and services from material sales, quality appraisal, mold design, molding and processing.
6. Small batch type selection technical support
Accept small batch orders of 5kg at least; The rofessional engineer team can cooperate with customers to carry out material selection in the early stage of production, and provide corresponding material recommendations ccording to customer production and product requirements
7. Quality assurance
Our products are all from well-known manufacturers. Each batch of materials has various inspection reports and certificates including original factory certificate, MSDS, ROHS, SGS, reach,, EU, UL, COC / COA, etc.
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