One of the problems that happen in metal is corrosion. So, when you ask question, “metal matters: how to combat hydraulic fitting corrosion”, this article will give you the answer.
Refined materials and corrosion
Before we talk about the solution to overcome corrosion, let’s talk about what refined materials are and their corrosion. There are several materials that include in refined materials. They are including brass, stainless steel, and steel. Those materials do not form naturally. They will go through a phase called corrosion because they tend to revert over time into forms of more stable mineral. Corrosion means destruction happens in refined materials because of electrochemical or chemical reactions in their surroundings or environments. That destruction will happen gradually. Even though corrosion sometimes is considered as an inevitable, natural process, it is also considered to product and production development. Besides controlling the design and choosing the best material option of each fitting made, many of manufacturers of hydraulic fitting usually prevent corrosion in their materials by protecting them with coating.www.kp-lok.com
The comparisons of refined materials
In order to handle high pressure in environment safely, typical hydraulic system have to have the right corrosion resistance and right strength. Generally, metal fittings are used with many hydraulic systems because of their ratings of high-pressure. Even though plastics are also considered as higher resistance materials to corrosion as well, their durability and lower strength make them poorly material that can be suitable for hydraulic system.
In here, there are four conventional metal materials that are usually used for fittings. They are including:
- Stainless steel: it shows the same durability and strength as carbon steel while it also provides amazing resistance of corrosion. It’s considered as the best material that is suitable with hydraulic fitting applications.
- Carbon steel: it is strong and durable material with high resistance to heat. Due to its high strength and high pressure to its environment, it is used in many construction sector and agricultural industrial. It also has lower cost as well compare to stainless steel.
- Aluminum: it is corrosion resistant and light weight material. It can be alloyed with silicon, copper, zinc, and other materials to improve strength.
- Brass: it has a fair level of strength with moderate corrosion resistance when the pressure situations are low. It is not very recommended for high temperature that is more than 400 degrees because it will become softer and the strength will be gone.
Corrosion resistant plating and coatings
Now, let’s talk about how to combat hydraulic fitting corrosion. External coating or plating can be applied to refined materials to prevent corrosion especially to carbon steel hydraulic fittings. When it applies to carbon steel hydraulic fittings, it can make their life longer even in high corrosive surrounding or environment that use rough media like fertilizers or salt sprays. In some manufacturers, they usually offer three ultimate options of plating. They are including:
External plating or coating can be applied to carbon steel hydraulic fittings to extend their life in highly corrosive environments that use harsh medias such as salt sprays and fertilizers.
- Electrodeposited zinc
- Zinc nickel
- Electro less nickel
So, if you want to prove yourself the answer of metal matters: how to combat hydraulic fitting corrosion make sure you choose the best corrosion resistance coating for your steel fittings.