Iso 20457 Tg5 !!hot!! Jun 2026

: Ideally suited for housing parts , enclosures, and general technical moldings.

. This group is typically utilized for precision-moulded components that require tighter control than standard commercial parts but are less restrictive than high-precision Class A components. Iso 20457 Tg5

: Often considered the "Standard" or "Intermediate" accuracy group for many high-quality industrial and consumer plastic parts. TG6 and above : Ideally suited for housing parts , enclosures,

Talc is a common filler in automotive plastics (dashboards, interior trim). When recycled, talc particles can agglomerate or become too fine. provides the protocol for measuring the "mean particle size of mineral fillers" after recycling. If you are a buyer of recycled PP talc-filled 20%, you require a COA (Certificate of Analysis) that follows TG5. Without it, you risk nozzle blockages or surface defects (streaks). : Often considered the "Standard" or "Intermediate" accuracy

The assignment of a part to TG5 is not arbitrary; it depends on the interaction between material behavior and the molding process. Material Stiffness and Hardness

ISO 20457:2018 - Plastics Moulded Parts Tolerances and Acceptance

Third, TG5 addresses . A perennial fear in recycling is the presence of legacy hazardous substances (e.g., brominated flame retardants in e-waste plastics). TG5 does not set health limits—that is the realm of chemical safety regulations—but it specifies detection and reporting standards . If a batch exceeds a defined threshold for a restricted substance, TG5’s protocol triggers a clear pathway: rejection, downcycling into a non-sensitive use, or decontamination.