3 reasons to use stainless steel fittings
- Jan 15, 2018 -
Steel is one of the most commonly used materials in the world. That said, people often forget that there many types of steels, each with their own differing properties and uses.
According to the World Steel Association, there are more than 3,500 different grades of steel with vastly different properties.
With all of these varieties of steel available for purchase on the market, it’s important to remember that not all types of steel are considered equal.
Carbon steel contains anywhere from 0.04% to 1.50% carbon. It can be broken into 3 main subcategories, based on the level of carbon present:
Stainless steel is a metal alloy containing iron, and must contain at least 10.5% chromium (although it may contain much more)
These seemingly-subtle differences in chemistry have plenty of significant real-world effects, especially when it comes to manufacturing and using steel fittings in production settings.
Now that we’ve discussed the fundamental physical differences between these two types of steel, here are three reasons you should be using stainless steel for all of your fittings:
1. Stainless steel is more rust-resistant.
Rust can cause a lot of problems in manufacturing environments, including wearing down of the metal material. Fortunately, stainless steel does not easily corrode, rust, or become stained by water.
Since stainless steel is composed of at least 10.5% chromium, the chromium is able to form a protective layer of chromium oxide on the surface of the metal, which blocks the corrosion from occurring.
Conversely, unprotected carbon steel rusts and corrodes easily when exposed to air and moisture, and is therefore not ideal in these types of environments.
2. Stainless steel is more acid-resistant.
Stainless steel is generally very resistant to corrosion and damage from acids.
This usually varies based on the type of stainless steel as well as the type of acid, but all types of stainless steel are corrosion-resistant when faced with phosphoric acid.
3. Stainless steel is less brittle.
Stainless steel fittings are less likely to split and crack than other types of steel, ensuring pressure containment.
The carbon used in regular carbon steel causes it to become more brittle than stainless steel. Therefore, it’s much easier to snap, split, and break (basically everything you do NOT want to happen in a manufacturing setting!)
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