40*22mm DIA SiC Ceramic Foam Filter

Foundrymax – Round 40mm Dia × 22mm Thick / Silicon Carbide Ceramic Foam Filter

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

• Shape: Round disc – designed for sprue bottom or pour basin placement

• Size: 40mm diameter × 22mm thickness

• Pore Density: 10 PPI, 15PPI, 20PPI, 25PPI, 30PPI, 40PPI

• Features: 3D reticulated structure, porosity >85%, excellent thermal shock resistance; effectively removes slag, dross, and sand inclusions

• Applications: Gray iron, ductile iron, aluminum, copper – small to medium castings, precision casting, and investment casting

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

Foundrymax Round 40mm Dia × 22mm Thick Silicon Carbide Ceramic Foam Filter – Precision Disc for Sprue and Pour Basin Filtration

Foundrymax offers the 40mm diameter × 22mm thick Round Silicon Carbide (SiC) Ceramic Foam Filter – a purpose‑designed disc filter for foundries requiring reliable molten metal filtration at the sprue base or within the pour basin–. Unlike square or rectangular filters that are typically placed in runners, this round format fits seamlessly into cylindrical gating components, making it a preferred choice for investment casting, precision casting, and small‑to‑medium production runs.

The 40mm diameter provides an ideal cross‑section for sprue sizes commonly found in jobbing foundries and precision casting shops, while the 22mm thickness delivers robust mechanical strength and exceptional thermal shock resistance up to 1500°C. The filter features a three‑dimensional reticulated structure with over 85% open porosity, creating tortuous flow paths that mechanically trap non‑metallic inclusions – including slag, dross, and refractory particles – without restricting metal flow.

Key advantages for foundry operations:

• The round disc shape allows direct placement at the sprue bottom or pour basin outlet, capturing inclusions at the earliest entry point into the gating system.

• Effectively reduces turbulence during mold filling, minimizing gas entrapment and surface defects in the final casting.

• Improves casting density, mechanical properties, and surface finish by delivering cleaner metal to the mold cavity.

• High chemical stability ensures no reaction with molten metal – the filter does not alter the alloy composition.

Why Foundrymax for this round filter?
As a direct manufacturer, we produce round filters in standard diameters from 40mm up to 500mm, with thicknesses ranging from 11mm to 50mm. We offer flexible PPI options (10, 15, 20, 30) and can customize non‑standard diameters to match your specific sprue dimensions. Every batch is sintered under controlled conditions to ensure consistent pore uniformity and dimensional accuracy–. We also provide competitive factory‑direct pricing, bulk order discounts, and secure worldwide shipping.

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