Material Comparison
Product Info
Product Name
Brand Name
Usages
Properties
Certificates
PC/PBT KU2-7912/4 BK COVESTRO GERMANY
Makroblend®
shoes、film、Stationery
wear resistant、High elasticity、Fast forming cycle
UL
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Plastic Datasheets
| Impact resistance | Test Condition | Test Method | COVESTRO GERMANY/KU2-7912/4 BK |
|---|---|---|---|
| Charpy Notched Impact Strength | 23°C | ISO 179/1eA | 60 kJ/m² |
| Impact strength of simply supported beam without notch | -30°C | ISO 179/1eU | NoBreak |
| Charpy Notched Impact Strength | -30°C | ISO 179/1eA | 45 kJ/m² |
| Impact strength of simply supported beam without notch | 23°C | ISO 179/1eU | NoBreak |
| Suspended wall beam without notch impact strength | -30°C | ISO 180 | NoBreak |
| 23°C | ISO 180 | NoBreak | |
| Impact strength of cantilever beam gap | 23°C | ISO 180/A | 60 kJ/m² |
| -30°C | ISO 180/A | 45 kJ/m² | |
| -20°C | ISO 180/A | 52 kJ/m² |
| hardness | Test Condition | Test Method | COVESTRO GERMANY/KU2-7912/4 BK |
|---|---|---|---|
| ball-indentation hardness | ISO 2039-1 | 100 Mpa |
| Supplementary Information | Test Condition | Test Method | COVESTRO GERMANY/KU2-7912/4 BK |
|---|---|---|---|
| GottfertMeltViscosity | 260°C | 内部方法 | 670 Pa·s |
| electrolytic corrosion | 23°C | IEC 60426 | A1 |
| Electrical performance | Test Condition | Test Method | COVESTRO GERMANY/KU2-7912/4 BK |
|---|---|---|---|
| dielectric strength | 23°C,1.00mm | IEC 60243-1 | 35 KV/mm |
| relative permittivity | 23°C,1MHz | IEC 60250 | 3.10 |
| Volume resistivity | 23°C | IEC 60093 | >1.0E+17 ohms·cm |
| relative permittivity | 23°C,100Hz | IEC 60250 | 3.20 |
| Surface Resistivity | IEC 60093 | >1.0E+17 ohms | |
| Compared to the Leakage Tracking Index (CTI) | 解决方案A | IEC 60112 | PLC 1 |
| Dissipation Factor | 23°C,100Hz | IEC 60250 | 1.5E-03 |
| 23°C,1MHz | IEC 60250 | 0.013 | |
| Compared to the Leakage Tracking Index (CTI) | 解决方案B | IEC 60112 | PLC 4 |
| Mechanical properties | Test Condition | Test Method | COVESTRO GERMANY/KU2-7912/4 BK |
|---|---|---|---|
| bending strength | 3.5%Strain,23°C | ISO 178 | 66.0 Mpa |
| Bending Strain | 23°C | ISO 178 | 5.5 % |
| tensile strength | 屈服,23°C | ISO 527-2/50 | 50.0 Mpa |
| bending strength | 23°C | ISO 178 | 75.0 Mpa |
| tensile strength | 断裂,23°C | ISO 527-2/50 | 45.0 Mpa |
| Tensile strain | 屈服,23°C | ISO 527-2/50 | 4.0 % |
| Flexural modulus | 23°C | ISO 178 | 2100 Mpa |
| Tensile modulus | 23°C | ISO 527-2/1 | 2150 Mpa |
| Nominal tensile fracture strain | 23°C | ISO 527-2/50 | >50 % |
| flammability | Test Condition | Test Method | COVESTRO GERMANY/KU2-7912/4 BK |
|---|---|---|---|
| Burning rate - US-FMVSS | >1.00mm | ISO 3795 | passed |
| Burning wire flammability index | 2.0mm | IEC 60695-2-12 | 700 °C |
| Limiting Oxygen Index | ISO 4589-2 | 21 % | |
| UL flame retardant rating | 1.6mm | UL 94 | HB |
| physical property | Test Condition | Test Method | COVESTRO GERMANY/KU2-7912/4 BK |
|---|---|---|---|
| density | 23°C | ISO 1183 | 1.20 g/cm³ |
| Apparent density | ISO 60 | 0.70 g/cm³ | |
| Water absorption rate | 平衡,23°C,50%RH | ISO 62 | 0.20 % |
| 饱和,23°C | ISO 62 | 0.50 % | |
| Melt volume flow rate | 260°C/5.0kg | ISO 1133 | 16.0 cm3/10min |
| Thermal performance | Test Condition | Test Method | COVESTRO GERMANY/KU2-7912/4 BK |
|---|---|---|---|
| melting temperature | ISO 11357-3 | 223 °C | |
| vicat | ISO 306/B120 | 125 °C | |
| Linear coefficient of thermal expansion | MD：23到55°C | ISO 11359-2 | 9E-05 cm/cm/°C |
| Heat distortion temperature | 0.45MPa,未退火，HDT | ISO 75-2/B | 106 °C |
| thermal conductivity | 23°C | ISO 8302 | 0.20 W/m/K |
| Linear coefficient of thermal expansion | TD：23to55°C | ISO 11359-2 | 9E-05 cm/cm/°C |
| Heat distortion temperature | 1.8MPa,未退火，HDT | ISO 75-2/A | 82.0 °C |
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