Challenge
A thin-wall electronics housing required flame retardant performance, surface appearance, enough flow length and reduced risk of sink marks, warpage and stress cracking during production validation.
Material Solution
The material review compared flame retardant ABS and PC/ABS directions, with attention to UL94 target thickness, flow behavior, heat resistance, impact requirement, color and injection molding process risk.
Key Engineering Controls
- UL94 target should be checked at the actual part thickness, not only a generic catalog value.
- FR ABS can be suitable for cost-sensitive housings, while FR PC/ABS may support tougher or higher heat applications.
- Thin-wall flow, gate freeze, packing pressure and cooling balance should be reviewed together.
- TDS, sample testing and application-specific validation are needed before final grade approval.
Outcome
The customer gained a practical material comparison path before sampling, including when to consider PC/ABS instead of ABS and which molding issues should be validated during trial production.