Magnesium Alloy Sheet

£17.99 (£14.99 ex. VAT)

3 in stock (more can be ordered)

Product Code: 234-018A Category: Tags: , ,

Description

Magnesium Alloy sheet.

300mm x 200mm.

1.5mm thick.

Rigid sheet. Ideal for use in producing fuel cells / batteries.

One sheet can give you 150 pieces @ 20mm square.

Magnesium is a fascinating element and widely used in commercial products ranging from large car components to pencil sharpeners and printing It is not a rare material, but is surprisingly difficult to source as a useable sheet. Other than as an alloyed material (e.g., with aluminium).

The magnesium sheet supplied by MINDSETS is almost pure and hard rolled. On first handling its gives away the fact that it is extremely light in weight – considerably lighter in fact than aluminium (Mg density: 1.738; Al density: 2.7). This gives it a real advantage in products where high strength and stiffness, but low weight, are essential.

In the right conditions, magnesium is highly flammable and burns at a very high temperature. Historically, magnesium powder was used for flash photography and even today very thin magnesium ribbon is burnt in chemistry demonstrations. Both applications, however, rely on a very high surface area to mass ratio. In normal sheet or cast mass form, the material is quite safe unless heated overall to its ignition point by a powerful external source. Thus car wheels can burn in an intense fire, and swarf produced by machining can ignite if friction-heated under adverse circumstances. Indeed, in the US, small magnesium blocks are available as campfire lighters, but these only ignite when brought up to temperature.

There are many uses for the sheet – including for example, fabrication of very light structures such as containers or components of containers (smart phone case backs), structural components (model aircraft and drone parts), and even DIY batteries and fuel cells. A simple battery comprising a sandwich of magnesium thick paper soaked in weak acid and copper sheet will give an output of about 1.2 volts. Two in series will light up an LED.

The sheet can be cut with a guillotine, drilled or punched – and worked with all normal hand tools – but care should be taken if (under unusual circumstances) a larger quantity of powder or fine shavings/swarf is likely to be produced.