The average as-cast permanent mold surface finish is 200 to 420 RMS. This is smoother than sand casting, but rougher than die casting. Special ceramic permanent mold coatings can help achieve an even smoother surface!

However, permanent mold castings typically have lower-porosity than sand or die castings. This means you can easily machine or polish castings without the risk of opening up porosity and inclusion defects.

For an even smoother surface, consider polishing or finishing. Readily available aluminum casting finishes include:
• Grit number finishes
• Satin
• Stainless steel shot blast
• Powder coating or painting
• Anodizing

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This is a clip from a webinar walking though our 2024 casting design guide.
Full Webinar: [ Ссылка ]
Read Design Guide: [ Ссылка ]

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Batesville Products is an aluminum permanent mold casting, machining, and polishing foundry in Lawrenceburg, IN.

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