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Stainless Steel FAQ Guide

Jun 02, 2021

Wanjuan is a professional steel provider. We provide a wide range of steel products and steel services to customers in a variety of industries. Stainless steel is one of the most popular steels and one of the most widely used steels in daily life. For the common problems of stainless steel, we will list them in detail in several articles:


Why does stainless steel rust?

The corrosion resistance of stainless steel varies with the chemical composition, intergranular structure, service conditions and type of environmental media of the steel itself. Not any kind of stainless steel, corrosion-resistant and rust-free in any environment. There is a layer of chromium-rich oxide film (protective film) on the surface of stainless steel to prevent the infiltration and oxidation of oxygen atoms, so as to obtain the ability to resist rust. Once for some reason, the film is continuously damaged, oxygen atoms in the air or liquid will continue to infiltrate or iron atoms in the metal will continue to separate out, forming loose iron oxide, and the metal surface will be continuously corroded.


Matters needing attention in the machining process of stainless steel?

Processing area: The processing area of ​​stainless steel parts should be relatively fixed. The platform of the stainless steel parts processing area should take isolation measures, such as laying rubber pads. The stainless steel parts processing area should avoid damage and pollution to the stainless steel parts.

Cutting: The cutting of stainless steel parts adopts shearing or plasma cutting, sawing, etc.

Machining: Stainless steel parts should also be protected during machining such as turning and milling. After the work is completed, the oil stains, iron filings and other debris on the surface of the workpiece should be cleaned up.

Forming: In the process of rolling and bending, effective measures should be taken to avoid scratches and creases on the surface of stainless steel parts.


How to tell if something is stainless steel

Since stainless steel and aluminum are very similar in appearance. Many people wonder how to know which is which. There are many ways to tell if something is stainless steel:

Use magnets. If the material is magnetic, it's stainless steel, as aluminum is not.

Stainless steel is heavier than aluminum.

Break a small piece with a hammer, if the inside of the material is light gray or shiny, it's most likely stainless steel.


Is stainless steel waterproof?

In general, most stainless steels are fairly waterproof, making them a popular material for jewelry making. Stainless steel can be damaged in high salinity water with poor air circulation, which can lead to rust. Also, swimming pools treated with chlorine can damage stainless steel.


Can stainless steel be recycled?

Steel is one of the most recycled metals on the planet. Cheaper stainless steel alternatives, such as fiberglass or polyethylene, are not recyclable and can have devastating consequences for the environment. Stainless steel is usually recycled and melted. Most of the stainless steel manufactured today comes from previously recycled materials.


We offer custom steel products that are machined and finished to the exact specifications of our customers. We supply cold rolled steel, galvanized steel, galvanized aluminum steel and color steel.

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