Grade reference

Westlake 2070

Suspension resin from Westlake Corporation, K-value 57.

All grades · sourced from Westlake Corporation · checked 19 August 2026

Producer
Westlake Corporation
Polymer
PVC
Type
Suspension resin
K-value
57
Inherent viscosity
0.69 dl/g
Producer lists it for
Injection and blow moulded products · Extruded sheet · Bottles · Fittings

What that means in practice

K57, IV 0.69 — effectively the 2000-series twin of 5265, with an identical application list. If both are offered, the difference is not in the published figures, so ask the seller what they actually have.

If K-values are not something you work with daily, our PVC grades and pricing guide explains what they measure and how prime, off-spec, regrind and regranulate differ.

What to check before buying Westlake 2070

  • Confirm the K-value on the batch, not just the grade name — low-K grades are chosen for flow, and a drift upward changes how it fills.
  • Ask what it was intended for. Low-K resin sold as general-purpose will disappoint in an application that needed mechanical strength.
  • For anything moulded, ask about colour consistency and regrind content if it is not prime.

Buying or selling this?

Browse the board to see what is listed today — public, no account needed. Nothing matching? Post a Wanted requirement with the grade and tonnage you need and sellers come to you. Selling it? List it — free, no commission.