Surface finishes
Passivation services
Improve the corrosion resistance of stainless steel parts by removing surface contaminants through passivation.
| Surface roughness | Applicable materials | Cosmetic availability | Visual appearance |
|---|---|---|---|
| Ra 3.2μm (As Machined) | Stainless Steel | Not cosmetic | Machining marks are visible |
Example of a Passivation finished part
Passivation applications
Passivation is a widely used post-processing treatment for stainless steel components. This process removes free iron and surface contaminants from the material, which helps to improve the natural corrosion resistance of stainless steel. This makes it particularly valuable for parts operating in challenging environments where cleanliness and corrosion protection are essential. Typical applications include:
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Medical devices and equipment
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Food processing equipment
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Precision stainless steel components
FAQs
What is passivation?
Passivation is a post-processing treatment for stainless steel that removes surface contaminants and helps improve the material's natural corrosion resistance.
When should I choose passivation?
Passivation is recommended for stainless steel components used in environments where corrosion resistance, cleanliness, and long-term durability are essential.
Does passivation prevent stainless steel from rusting?
Passivation improves the natural corrosion resistance of stainless steel by removing free iron and surface contaminants. However, it does not make stainless steel completely immune to corrosion.
Does passivation affect part dimensions or tolerances?
Passivation removes surface contaminants rather than applying a thick coating. For parts ordered through Protolabs Network, specified tolerances are maintained after passivation.
Does passivation change the appearance of stainless steel parts?
Passivation typically causes little to no visible change to the surface. Machining marks may remain visible, so the finish is considered non-cosmetic.
What are the benefits of passivation?
Passivation helps improve corrosion resistance and surface cleanliness without adding a thick coating, making it suitable for precision stainless steel components.
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