Zircon 325 Flour

Zircon 325 Flour is a zircon, high-quality flour for precision investment casting use.

This ultra-fine zircon mesh flour, screened to pass through a 325-mesh sieve (approximately ≤45 microns), is ideal for primary slurry coats where maximum surface detail and smoothness are critical. Its high specific gravity and thermal conductivity help dissipate heat during pouring, minimizing metal-mold reactions and surface defects like burn-in or roughness. Ziron 325 flour offers exceptional refractoriness, with a melting point over 2200 °C and strong resistance to thermal shock, making it highly effective in demanding casting environments. Its consistent particle size supports even slurry suspension and stable viscosity in both colloidal silica and ethyl silicate binder systems. Foundries casting aerospace, stainless steel, and precision industrial components rely on Ziron 325 for sharp pattern replication, shell durability, and a high-quality finish.

Ships in Bags. Larger orders available in Super Sacks.