产品展厅
产品展厅
特性：
1、优良的机械性能，机械强度高，耐疲劳性和尺寸稳定性好，蠕变也小，这些性能在高温条件下也极少有变化。
2、耐热老化性优异，增强后的UL温度指数达120°-140°，此外，户外长期老化性也很好
3，耐溶剂性好，无应力开裂。
4、PBT遇水易分解，在高温、高湿环境下使用需谨慎。
5、优良的电气性能，体积电阻率及介电强度高，耐电弧性优异，吸湿性极小，在潮湿及高温环境下，也能保持电性能稳定，是制造电子、电气零件的理想材料。、
6、易成型加工和二次加工，易用普通设备注塑或挤塑。由于结晶速度快，流动性好，模具温度也比其他工程塑料要求低，在加工薄壁制件时，仅需几秒钟，对大部件也只要40-60秒即可。
PBT Crastin B4300G4
Product Description:
Ultradur B 4300 G4 is an easy flowing injection molding PBT with 20% glass fiber reinforcement for rigid, tough, and dimensionally stable parts.
Applications
Typical applications include car door handles, housings for small electric motors, headlight retainers and drum controllers.
| Physical | Nominal Value | Unit | Test Method |
Density / Specific Gravity | 1.45 | g/cm3 | ASTM D792, ISO 1183 |
Melt Volume-Flow Rate (MVR) (250°C/2.16 kg) | 14 | cm3/10min | ISO 1133 |
Molding Shrinkage | |||
Flow : 3.18 mm | 0.40 | % | |
Across Flow | 1.2 | % | ISO 294-4 |
Flow | 0.43 | % | ISO 294-4 |
Water Absorption | |||
Saturation | 0.40 | % | ASTM D570 |
Saturation, 23°C | 0.40 | % | ISO 62 |
Equilibrium, 50% RH | 0.20 | % | ASTM D570 |
Equilibrium, 23°C, 50% RH | 0.20 | % | ISO 62 |
Viscosity Number (Reduced Viscosity) | 109.0 | ml/g | ISO 1628 |
| Mechanical | Nominal Value | Unit | Test Method |
Tensile Modulus (23°C) | 7100 | MPa | ISO 527-2 |
Tensile Strength | |||
Break, 23°C | 120 | MPa | ASTM D638, ISO 527-2 |
Break, -40°C | 173 | MPa | ISO 527-2 |
Tensile Elongation | |||
Break, 23°C | 3.0 | % | ASTM D638, ISO 527-2 |
Break, -40°C | 2.9 | % | ISO 527-2 |
Flexural Modulus | |||
23°C | 6140 | MPa | ASTM D790 |
23°C | 6300 | MPa | ISO 178 |
| Impact | Nominal Value | Unit | Test Method |
Charpy Notched Impact Strength (23°C) | 8.0 | kJ/m2 | ISO 179 |
Charpy Unnotched Impact Strength | ISO 179 | ||
-30°C | 54 | kJ/m2 | |
23°C | 58 | kJ/m2 |
