Metal Processes Archives - Metal by the Metre

What is White Rust?

What is White Rust?

by | Mar 27, 2019 | Metal Processes

White rust, also known as wet storage stain or storage stain, is the white powdery substance that can form on the surface of a galvanised metal. This powder is a form of natural corrosion. This corrosion is damaging to both the aesthetic and the anti-corrosion layer...
What is Galvanisation and Why is it Used?

What is Galvanisation and Why is it Used?

by | Mar 26, 2019 | Metal Processes

Galvanisation is the process where a zinc coating is applied to steel or iron, in order to give it a protective layer, resistant to corrosion. The most common method of galvanisation is dipping the steel or iron into a pool of molten zinc. This method is called...
Annealing – Making Metal Ductile

Annealing – Making Metal Ductile

by | Feb 20, 2019 | Metal Processes

What is Annealing? Annealing is a heat treatment which alters the physical and often chemical properties of a metal to see it increase in ductility and decrease in hardness. Annealing involves heating the metal to a certain point and then slowly cooling. It is often...
Tempering – Making Metal Tough

Tempering – Making Metal Tough

by | Feb 11, 2019 | Metal Processes

What is Tempering? Tempering is a heat-treating process used to increase the ‘toughness’ of iron-based alloys so they are able to resist fracture. Typically, this process is done after the hardening process so some of the hardness can be reduced. Less hardness in a...