PBT BASF B4300G6
PBT BASF B4300G6
PBT BASF B4300G6 is a 30 % glass‑fiber‑reinforced PBT engineering plastic. It is widely used in various industrial fields for excellent rigidity, strength, dimensional stability and good processing flowability.
Main Applications
Automotive industry: radiator grilles, body panels, wheel covers, door‑window components, high‑voltage connectors, sensor housings, wind‑wiper arms.
Electrical & electronics: connectors, switches, motor housings, fuse boxes, keyboard keys, PCB‑related parts, enclosures, consoles, contact brackets, covers.
Household appliances: food‑processing blades, vacuum‑cleaner components, electric fans, hair‑dryer housings, coffee‑maker parts.
Industrial parts: bearings, gears, office‑equipment components.
Other fields: medical‑device parts, building materials, precision machinery.
Physical‑Mechanical‑Thermal‑Electrical Properties
| Property Category | Property Item | Test Standard / Condition | Test Data / Range | Unit |
|---|---|---|---|---|
| Physical Properties | Density | ISO 1183 | 1.53 | g/cm³ |
| Water absorption (23 ℃/24h, saturated) | ISO 62 | 0.40 | % | |
| Water absorption (23 ℃,50 %RH, equilibrium) | ISO 62 | 0.20 | % | |
| MVR | ISO 1133 | 11 | cm³/10min | |
| Viscosity number | ISO 307 | 102 | cm³/g | |
| Molding shrinkage (flow direction) | — | 0.2 | % | |
| Molding shrinkage (transverse direction) | — | 1.1 | % | |
| Mechanical Properties | Tensile modulus | ISO 527‑1/-2 | 10000 | MPa |
| Tensile strength | ISO 527‑1/-2 | 135 | MPa | |
| Elongation at break | ISO 527‑1/-2 | 2.5 | % | |
| Flexural strength | ISO 178 | 200 | MPa | |
| Tensile creep modulus | ISO 899‑1 | 7500 | MPa | |
| Charpy un‑notched impact (23 ℃) | ISO 179/1eU | 67 | kJ/m² | |
| Charpy notched impact (23 ℃) | ISO 179/1eA | 11 | kJ/m² | |
| Thermal Properties | HDT @1.8 MPa | ISO 75‑1/-2 | 215 | ℃ |
| HDT @0.45 MPa | ISO 75‑1/-2 | 220 | ℃ | |
| Melting point | ISO 11357‑1,-2,-3 | 223 | ℃ | |
| CLTE | ISO 11359‑2 | 0.2‑0.3×10⁻⁴ | /℃ | |
| UL94 rating | UL94 | HB | class | |
| Electrical Properties | Volume resistivity | IEC 60093 | 1×10¹⁶ | Ω·m |
| CTI‑A | IEC 60112 | 375 | V | |
| CTI‑B | IEC 60112 | 125 | V | |
| Relative permittivity (100 Hz) | IEC 60250 | 4.0 | — | |
| Relative permittivity (1 MHz) | IEC 60250 | 3.8 | — | |
| Dissipation factor (100 Hz) | IEC 60250 | 25×10⁻⁴ | — | |
| Dissipation factor (1 MHz) | IEC 60250 | 170×10⁻⁴ | — |
Injection‑Molding Parameters
| Process Stage | Parameter Item | Reference Range / Recommendation | Unit / Remarks |
|---|---|---|---|
| Pre‑treatment | Drying temperature (air‑dry) | 120 ℃ (6‑8h) / 150 ℃ (2‑4h) | ℃ |
| Drying temperature (desiccant dryer) | 150 ℃ (2.5 h) | ℃ | |
| Target moisture content | ＜0.03 | % | |
| Drying equipment | Desiccant dryer recommended | — | |
| Injection molding | Melt temperature range | 225‑275 | ℃ |
| Recommended melt temperature | 250 | ℃ | |
| Mold temperature | 40‑60; higher optional for reinforced grade | ℃ | |
| Injection pressure | Medium; max 1500 bar | bar | |
| Injection speed | As fast as possible; PBT solidifies rapidly | — | |
| Back pressure | Set by melt condition, generally low | MPa | |
| Screw speed | Adjust by equipment & cycle; avoid excessive shear heat | rpm | |
| Mold | Runner type | Round runner recommended(D = part thickness + 1.5 mm) | — |
| Gate type | Various types available; hot‑runner applicable (prevent leakage & degradation) | — | |
| Gate dimension | 0.8‑1.0 × t (t = part thickness) | mm | |
| Mold cooling | Well‑designed cooling channels(Φ12 mm recommended); fast & uniform heat dissipation to reduce warpage | — | |
| Post‑processing | Annealing (if required) | Reduce residual stress & improve dimensional stability | ℃ |
| Annealing time | Adjust according to wall thickness | h |
Note: All data above is for reference only.
