At SilcoTek, customers frequently ask: "Which coating should I use to protect my parts from corrosion?" The answer depends on several factors, including acid type, concentration, temperature, and even industry-specific requirements. While we’ve published plenty of individual case studies and test results, we wanted to provide a simple, side-by-side guideline to help you navigate corrosion resistance across our major coatings.
Below, we break down the strengths and ideal use cases for our top three corrosion-resistant coatings: Dursan®, Silcolloy® 2000, and Siltride®.
| Coating | pH Range | Best For | SilcoTek Certificate of Compliance | 3rd Party Certifications | Key Advantages |
|---|---|---|---|---|---|
| Dursan | 0–14 | Broad chemical resistance, biopharma, food-grade needs | Yes | NSF, USP Class VI | Corrosion resistance + hydrophobicity + inertness |
| Silcolloy 2000 | 0–8 | High-temperature gas applications | Yes | – | Excellent thermal stability |
| Siltride 1000 | 0–14 | High-concentration acids, harsh environments | Yes | – | Best overall corrosion resistance |
Start with your application conditions:
Low concentration acids or neutral pH environments at room temperature? All three coatings typically perform well.
Higher concentration mineral acids like 18% HCl or 80% H2SO4 or elevated temperature corrosive exposures? Siltride is your best option.
Very high temperature (600 - 800°C) applications or oxidation resistance? Silcolloy 2000 provides an exceptional barrier.
Biopharma or food processing equipment? Dursan is your go-to for applications requiring regulatory certifications.
Each coating brings its own strengths beyond corrosion:
Dursan offers superior hydrophobicity and low surface energy, making it ideal when you also need non-stick or inertness properties (e.g., for analytical sampling or sticky organics).
Siltride prioritizes maximum corrosion protection. It’s the most robust barrier we offer in aggressive chemical environments.
Silcolloy 2000 stands out for thermal durability. If your process sees sustained heat, it’s the best option.
Sometimes the choice comes down to part complexity or base metal. Our coatings can be applied to stainless steel, alloys, and even exotic metals, but certain chemistries perform better on specific substrates or in different geometries. Talk to our team early if you're designing new components - we can help you make the right call before fabrication.
While we’re working on compiling more side-by-side corrosion data in one place, we’re always happy to provide application-specific advice. If you’re unsure which coating is best for your needs, just reach out. We also offer coated coupons for testing multiple coatings. We could even coat your parts for little or no cost to you. Our coating experts are here to help!
There’s no one-size-fits-all solution to corrosion - just better tools for each situation. Whether you're battling sulfuric acid, salt water, or steam, SilcoTek has a coating that can extend the life of your parts and improve system performance.
Have a question about your specific application? Contact us to request a free sample to test in your own environment.