What is the difference between HDPE and PVDF?

HDPE is an economical thermoplastic with good chemical resistance to many acids and bases. Lightweight and easy to fabricate. PVDF offers superior chemical resistance, especially to solvents and halogens. Higher temperature rating and mechanical strength than HDPE.

When should I use HDPE instead of PVDF?

Use HDPE for: Chemical storage tanks, piping for mild chemicals, containers, general-purpose chemical handling on a budget. Use PVDF for: Aggressive solvents, high-purity applications, semiconductor manufacturing, pharmaceutical processing.

Which has better chemical resistance: HDPE or PVDF?

HDPE has 561 chemicals rated Excellent (A) at 20°C, while PVDF has 687. Including Good (B) ratings, HDPE is compatible with 585 chemicals and PVDF with 837.