Dia 120×30-10ppi/20ppi/30ppi Zirconia Ceramic Foam Filter for Steel Foundry

Foundrymax – Round Ø120×30mm / 10/20/30PPI Zirconia Ceramic Foam Filter

• Material: Zirconia (ZrO₂) | Max Temp: 1700°C

• Pore Density: 10 PPI, 20 PPI, or 30 PPI

• Dimensions: 120 mm diameter × 30 mm thick

• Structure: Open‑cell foam

• Function: Inclusion/slag/oxide removal for steel and high‑alloy melts

• Foundrymax Advantage: Three PPI grades in one footprint, in‑house production, factory pricing

Foundrymax’s Ø120×30mm zirconia foam filter gives you a choice—not a compromise. Available in 10, 20, and 30 PPI, this round disc allows you to select the exact pore density your steel grade and casting geometry require, while keeping the same 120mm footprint across your gating system.

Which PPI Should You Choose?

• 10 PPI – Coarse pores. High flow, low back‑pressure. Recommended for larger castings, heavy sections, and grades where fill speed is the priority—carbon steels, structural alloys, and thick‑wall components.

• 20 PPI – Medium pores. Balanced flow and filtration. Suitable for most alloy and stainless steel applications where both cleanliness and throughput matter.

• 30 PPI – Finer pores. Enhanced inclusion capture. Ideal for thinner sections, investment castings, and critical components requiring superior surface finish and pressure tightness—such as valve bodies, turbine parts, and aerospace‑grade steel.

All three PPI grades are manufactured from the same high‑purity zirconia, rated to 1700°C. The material maintains its integrity at steel pouring temperatures (1550–1650°C), resists slag attack, and does not contaminate the melt. 

Why Foundrymax?

We manufacture all three PPI grades in‑house, ensuring consistent quality across every batch. Alternative thicknesses available upon request.

Contact Foundrymax to discuss your requirements or request samples of multiple PPI grades for evaluation.