Stainless Steel vs Galvanized

Posted by bolt_admin

Posted on November 5, 2017

When considering the choice between stainless steel and galvanised it can be difficult to know what the differences are, and of them, which is the most suitable for your needs. Here is a breakdown of the major differences in these two steels, to help you select the best one for the job.

1. The Materials

To begin with, you need to know what they are made of. Galvanised steel is a regular steel sheet that has been coated in zinc to make it resistant to corrosion. Stainless steel is an alloy containing a minimum of 10.5% chromium. This chromium produces a thin layer of oxide on the surface of the steel in order to prevent corrosion. The higher the chromium percent the greater its resistance to corrosion.

Stainless Steel vs Galvanized

2. The Cost

The biggest appeal for galvanised steel is that – on average – it is a cheaper option than stainless steel, and with its zinc coating provides the same oxidisation resistance benefits as stainless steel. Providing the same function at a lower price is what galvanised steel was designed for.

3. The Strength

In terms of water, both steels have a relatively equal resistance to corrosion, except however when it comes to salt water. Stainless steel has the best resistance to salt water, which is why it is so commonly used in marine environments. Around pools – where there is exposure to chlorine – galvanised steel is the better option. The same is true when there is any chance of two or more pieces rubbing together, as under friction stainless steel can wear and in some cases weld together.

If you’re still unsure about which is the better steel choice for your fasteners, bolts or tools, Bolt In is the Gold Coast’s leading specialty supplier of all trade fasteners and tools for building, construction, home hardware, marine and engineering industries. Contact us or visit our Gold Coast shop to have all of your questions answered by our expert team.