What Fastener Coating Has The Best Degree Of Corrosion Resistance?
Used for assembling furniture, hanging pictures, and building structures, fasteners are an essential part of any toolbox. But a fastener can’t do its job effectively if corrosion gets in the way.
That’s why you need a fastener with a corrosion-resistant coating. With the right coating, you can ensure your fastener stays corrosion-free for years to come.
If you’ve ever needed to join two materials together, then you’ve probably used a fastener before. A few popular types of fasteners include:
- Screws
- Nails
- Rivets
- Bolts
- Anchors
Fasteners are available in a variety of coatings. Not sure which one is best for your project? We’ve put together this guide to compare the most popular coatings, from zinc to titanium:
Types of Corrosion-Resistant Fastener Coatings
Choosing the right coating is crucial. One that wears down too quickly can threaten the structural integrity of your project. In a construction project, this can be dangerous.
That’s why it’s so important to consider the corrosion resistance of the fasteners you use; without that, everything falls apart.
How can you measure the corrosion resistance of a material? Manufacturers use what’s called a salt spray test. In it, manufacturers will take a sample of the material and apply a corrosive agent to it. Then, they will measure how it holds up over time.
The results are measured in hours. For example, a material that’s resistant to corrosion can withstand a 500-hour salt spray test.
We’re going to cover the pros and cons of each coating, so you can choose one that’s right for your project:
Stainless Steel
Regular steel corrodes quite easily—but not stainless steel.
What makes steel stainless so resistant? It’s due to the addition of chromium, which boosts the corrosion resistance of the material. At least 10-11% of the material must contain chromium to be considered true stainless steel.
Its water resistance is further improved by adding nickel, copper, or titanium. Stainless steel fasteners offer excellent corrosion resistance; they won’t rust or rot. This alloy metal is known for its durability and endurance.
Stainless steel fasteners are frequently used in areas that are often exposed to water, including washing machines and docks.
Zinc Coatings (Hot-Dip Galvanized)
Zinc coatings can hold up even in the toughest conditions. This material offers corrosion resistance to sulfuric and hydrochloric acid. If you’re building something that needs to withstand acidic conditions, zinc coatings are your best bet.
They work well with treated lumber, making them a great pick for a variety of projects.
Another benefit: Zinc plating is aesthetically pleasing and won’t take away from the beauty of your project. Hot-dip galvanized coatings are typically clear, but you can also choose yellow zinc coatings, which are better suited for watery conditions.
Ceramic Coated Fasteners
With ceramic coated fasteners, you get excellent corrosion and rust resistance. At Star Building Materials, we carry tri-layered ceramic coated Brown Deck Screws in a variety of sizes. The materials of each layer synergize to produce very strong anti-corrosion properties.
Phosphate Coatings
These coatings are applied to steel or metal fasteners. The crystalline conversion coating helps improve lubrication between sliding pieces. Phosphate coatings offer great adhesive properties, along with superb corrosion resistance.
Inconel
This type of coating is particularly resistant to high pressure and extreme temperatures. Its anti-caustic properties make it a great pick for materials that are near corrosive liquids. Made of chromium, nickel, and molybdenum alloy, these fasteners offer corrosion protection in trying conditions.
Titanium
With a titanium coating, the oxide layer will create a barrier between the metal and the corrosive material. Over time, it becomes even stronger.
Titanium has a favourable strength-to-weight ratio. It’s resistant to cracking and corrosion.
One drawback to titanium coatings is that they aren’t suitable for extremely dry environments. Without adequate moisture, the oxide layer may weaken. It relies on oxygen and moisture for its strength. It can also break down in extremely high temperatures.
Which Coating Is Best?
The answer will depend on your specific product. Will the materials be exposed to water, corrosive liquids, or chemicals?
Depending on the conditions, some coatings will be more resilient than others. The best coating will depend on factors like:
- Your budget
- Potential hazards (such as corrosive chemicals, extreme temperatures, or water)
- The materials you’re working with
Get the Best Corrosion Protection at STAR Building Materials
Whether you’re looking for screws, nails, or washers, one thing stays the same: You need a fastener that will last.
Trying to choose the right fastener for your next project? It can be a difficult choice, especially when you know the longevity of your project depends on it.
If you’re asking yourself, “Where can I find building supplies near me?”, then you’ve come to the right place.
At STAR Building Materials, we’ll help you find the corrosion-resistant fasteners you require to make your project a success. Whether you’re building furniture or beginning a construction project, our team is here to help.
With our selection of high-quality lumber and building supplies, you’re sure to find what you need. Contact us today!