D70x25 10ppi Zirconia Ceramic Foam Filters for Foundry

Foundrymax – Round Ø70×25mm / 10PPI Zirconia Ceramic Foam Filter for Foundry Applications

• Material: Zirconia (ZrO₂), max service temperature 1700°C

• Pore Density: 10 PPI

• Dimensions: 70 mm diameter × 25 mm thickness (round disc)

• Structure: Open‑cell reticulated foam

• Core Functions: Removes non‑metallic inclusions, oxides, slag, and refractory fragments; reduces turbulence and gas entrapment

• Primary Applications: Carbon steel, alloy steel, stainless steel, nickel‑based alloys, and other high‑temperature metals

Foundrymax Round Ø70×25mm / 10PPI Zirconia Ceramic Foam Filter for Foundry Applications

Foundrymax offers the Ø70×25mm zirconia ceramic foam filter with a 10 PPI pore structure, designed for foundries processing steel, stainless steel, and high‑temperature alloys. This round disc filter provides reliable high‑temperature performance and effective inclusion removal in a practical, standard format.

Purpose‑Built Format for Foundry Use

The 70mm diameter round format offers practical filtration coverage for a range of medium‑section castings, fitting neatly into round sprue wells, pouring cups, or runner systems. The 25mm thickness provides enhanced mechanical strength, providing additional erosion resistance under the static pressure of molten metal. This makes it a robust option for both gravity and low‑pressure casting processes.

The 10 PPI coarse‑pore structure is selected to balance flow capacity and inclusion capture for steel and alloy melts. Steel has higher density and surface tension than non‑ferrous metals, requiring good permeability to maintain fill rates. This pore grade effectively traps coarse slag, oxide films, and refractory debris while preserving the flow characteristics needed for stable mould filling. The open‑cell reticulated network creates tortuous paths that intercept non‑metallics through mechanical sieving and adhesion, delivering cleaner metal to the mould cavity.

Application Versatility

This filter is suitable for a wide range of foundry applications, including carbon steel, alloy steel, stainless steel, and nickel‑based superalloys such as Inconel and Hastelloy. It is particularly valuable for castings where inclusion‑related defects – such as porosity, slag entrapment, and surface blemishes – must be minimised to meet quality standards.

Why Foundrymax for This Zirconia Filter?

As a direct manufacturer, we produce this Ø70×25 size with consistent pore uniformity and dimensional precision. Alternative pore densities (10, 20, 30 PPI) and thickness variations (15mm, 20mm, 22mm) are available upon request. Our technical team can advise on the optimal specification for your specific alloy and casting conditions.

Contact Foundrymax to discuss your foundry filtration requirements or request a sample for evaluation.