BASF · Ultradur B4330 G6 HR
Ultradur B4330 G6 HR is a polybutylene terephthalate with 30 percent glass fibre and explicit hydrolysis resistance. PBT is the standard material for electrical connectors – dimensionally stable, tracking resistant and largely insensitive to moisture.
Rated 1 to 5 relative to the other materials in our range. This is an experience-based orientation aid, not a measured value – the hard numbers are in the table below.
| Property | Value | Source |
|---|---|---|
| Material class | Polybutylene terephthalate, impact modified (PBT-I) | grade designation |
| Reinforcement | 30 % glass fibre | grade designation |
| Special property | hydrolysis resistant (HR) | grade designation |
| Density (ISO 1183) | 1.49 g/cm³ | BASF ISO datasheet |
| Tensile strength (ISO 527) | 120 MPa | BASF ISO datasheet |
| Tensile modulus (ISO 527) | 8,500 MPa | BASF ISO datasheet |
| Elongation at break (ISO 527) | 3.4 % | BASF ISO datasheet |
| Charpy unnotched, 23 °C (ISO 179/1eU) | 74 kJ/m² | BASF ISO datasheet |
| Charpy notched, 23 °C (ISO 179/1eA) | 14 kJ/m² | BASF ISO datasheet |
| HDT A, 1.8 MPa (ISO 75) | 205 °C | BASF ISO datasheet |
| HDT B, 0.45 MPa (ISO 75) | 220 °C | BASF ISO datasheet |
| Melting temperature (ISO 11357) | 223 °C | BASF ISO datasheet |
| Fire behaviour (UL 94, 1.5 mm) | HB | BASF ISO datasheet |
| Water absorption (ISO 62) | 0.4 % | BASF ISO datasheet |
These values are taken from the manufacturer datasheet and apply to the material, not to the printed part. In 3D printing the achievable properties depend on part orientation, layer height and process parameters – in the Z direction in particular they are lower. Please talk to us before relying on them for design.
“Qualified for functional parts” is a general classification. A functional part can be a simple clip or a main load-bearing member – the forces and load cases differ fundamentally. We therefore always assess in each individual case whether a material is suitable for your part.
Source: BASF SE, ISO datasheet Ultradur® B 4330 G6 HR (via Albis) · retrieved 2026-09-21
Produced on: Bosch pellet printer — More about this machine
We are happy to advise on material selection and to review your part for manufacturability.
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