Dia 70×22-10PPI Silicone Carbide Ceramic Filters for Iron

Foundrymax – Round 70mm Dia × 22mm Thick / 10PPI Silicon Carbide Ceramic Foam Filter for Iron

• Material: Silicon Carbide (SiC), max working temp 1500°C

• Pore Density: 10 PPI

• Size: 70mm diameter × 22mm thickness

• Shape: Round disc – suitable for sprue bases, pouring basins, or runner systems

• Features: 3D reticulated structure, excellent thermal shock resistance; effectively removes slag, dross, and sand inclusions from molten iron

• Applications: Gray iron, ductile iron (SGI), and other ferrous castings – ideal for medium‑sized sprue cups and gating systems

• Manufacturer Advantage: Foundrymax – in‑house production, standard round sizes in stock, custom diameters/thicknesses/PPI available, factory pricing

Foundrymax Round 70mm Dia × 22mm Thick / 10PPI Silicon Carbide Ceramic Filters for Iron Castings

Foundrymax offers the 70mm diameter × 22mm thick Round Silicon Carbide (SiC) Ceramic Foam Filter, specifically designed for foundries filtering molten gray iron, ductile iron, and other ferrous alloys. The 70mm disc provides a practical cross‑section that fits comfortably into medium‑sized sprue bases, pouring basins, and runner systems, offering reliable filtration without requiring excessive space in the gating layout.

Manufactured from high‑purity silicon carbide, this filter withstands operating temperatures up to 1500°C, ensuring stable performance under the thermal demands of iron casting. The 10 PPI coarse‑pore structure delivers high melt permeability with minimal flow resistance, allowing foundries to maintain good pouring rates while effectively capturing coarse slag, dross, and refractory particles.

The three‑dimensional reticulated network ensures uniform pore distribution across the entire disc, delivering consistent filtration efficiency pour after pour. By removing non‑metallic inclusions early in the filling process, this filter helps improve casting density, reduce scrap rates, and enhance surface finish on finished components.

Key operational benefits:

• The round shape allows direct placement at the base of pouring cups or sprue wells, capturing contaminants at the earliest entry point into the gating system.

• High open porosity (>85%) maintains low back‑pressure, supporting stable mold filling and reducing turbulence.

• Excellent thermal shock resistance ensures the filter remains intact despite rapid temperature changes during pouring.

• Chemically stable – the filter does not react with molten iron or alter alloy composition.

Why Foundrymax for this round filter?
As a direct manufacturer, we produce this 70mm diameter size in regular batches, ensuring consistent quality and dimensional accuracy. We offer the same diameter in alternative thicknesses (15mm, 22mm, 25mm) and different PPI values (15, 20, 30, 40) upon request, allowing you to tailor the filter to your specific casting weight and gating design. Our technical team can advise on the optimal thickness and pore density for your iron alloy and production conditions.

Free samples are available for shop‑floor trials. Contact Foundrymax today to discuss your round filter requirements for iron castings.