3mm Thick Pure Natural 99.9% Copper by the Sheet Metal Panels

3mm Copper by the Sheet

We offer a wide selection of copper by the sheet online from trusted mills within the UK. Providing high-quality, low-priced copper sheet products to UK businesses and the general public, Speciality Metals is a leading copper metals supplier.

If you’re in the market for top-quality copper by the sheet, Speciality Metals has you covered. These 3mm thick pure natural 99.9% copper sheet metal panels are a staple for anyone working with copper. The versatile and durable sheets come in various sizes, making them perfect for welding, soldering, fabrication and cold working. Not only do these sheets offer exceptional performance, but they also have hygienic properties. Whether you’re a professional metalworker or a DIY enthusiast, these copper sheets are an excellent investment that will last for years to come. And with UK supply from Speciality Metals, you can be sure you’re getting the best service available.

Quick product details:

• Metal – Pure Copper
• Coating – No
• Weigh Per M2 –  53.8kg
• Thickness – 3mm 

Sheet metal is also available in mild steel and stainless steel.

Why Choose Speciality Metals

• FREE UK delivery on all orders
• Order dispatch within 24 hours of order
• Located in Warrington, UK which is the UK home of mesh and metals
• Our experienced staff are experts in the mesh market and care personally about your customer experience

Furthermore we stock a vast range of plain sheet plate options that compliment our mesh range perfectly.

Available Copper Plate Options:

This page is to give a range of our best selling panels at the best prices.

Simply select the metal panel that suits your requirement from the below options:

• 0.55mm Thick Copper Sheet
• 0.7mm Thick Copper Sheet
• 0.9mm Thick Copper Sheet
• 1.2mm Thick Copper Sheet
• 1.5mm Thick Copper Sheet
• 2mm Thick Copper Sheet
• 2.5mm Thick Copper Sheet
• 3mm Thick Copper Sheet

Does a 3mm Thick Pure Copper Sheet Corrode or Rust?

Copper does not rust, because rust specifically refers to the oxidation of iron or iron alloys like steel. However, copper can corrode over time. When copper is exposed to the elements, it reacts with oxygen in the air to form a layer of copper oxide, which is a dull, dark brown. This copper oxide can further react with carbon dioxide in the air to form copper carbonate, which gives aged copper its characteristic green patina, like you see on the Statue of Liberty.

The rate at which copper corrodes can depend on a variety of factors including the exact environmental conditions (e.g. humidity, pollution levels, contact with certain chemicals) and the presence of protective coatings. But in general, this is a very slow process and can take many years, especially for a relatively thick sheet like 3mm.

Keep in mind that this green patina, unlike rust in iron, doesn’t necessarily mean the copper is getting damaged. In fact, the patina layer can protect the underlying copper from further corrosion.

How Does Copper Control Slugs and Snails?

The exact mechanism by which copper repels slugs and snails isn’t completely understood, but the common theory is that the copper causes an unpleasant reaction, possibly like a mild electric shock, when it comes in contact with the slimy mucus that the slugs and snails produce.

This reaction is thought to occur because the mucus that a slug or snail produces is somewhat conductive, and when it comes into contact with the copper, an exchange of ions might take place. This can create a small electric current, or galvanic reaction, that the slug or snail finds unpleasant. The electric current is not strong enough to harm the slug or snail physically; rather, it provides a deterrent, discouraging the slug or snail from crossing the copper barrier.

It should be noted that for the copper to be effective, it must be kept clean. If the surface becomes oxidized or covered in dirt, it may no longer repel slugs and snails, therefore, maintenance is important when using copper as a deterrent. Copper tape, mesh or sheet can be used as barriers around garden beds or individual plants.

How Should I use Copper Sheets for Slug Control?

To use copper sheets for slug control in your garden, first purchase copper sheets. Cut these sheets into strips at least two inches wide, which is a size generally sufficient to deter slugs and snails, creating a small ridge or wave along the length of the strip can provide an additional physical barrier. Next, position these strips in the soil to encircle the garden beds or individual plants you wish to protect, ensuring the copper forms a complete barrier with no gaps. Secure the strips by slightly burying the edges in the soil or using garden staples or weights. Over time, copper can oxidize or get dirty, which reduces its effectiveness as a deterrent, so regular cleaning with a mild vinegar solution or specific copper cleaner is advised. Remember that copper barriers are most effective when used as part of a comprehensive slug and snail control strategy that may include other methods such as removing hiding spots, hand-picking at night or using slug traps.

What is Green Patina in Copper?

Green patina is a layer that forms on the surface of copper as a result of oxidation and other chemical reactions. Over time and exposure to the elements, these metals react with oxygen, water and carbon dioxide in the environment to form various compounds, one of which is a greenish layer known as patina.

The patina is primarily composed of basic copper carbonate (Cu2(OH)2CO3), also known as verdigris. The Statue of Liberty, for example, is coated in this green patina. Notably, while patina forms as a result of the metal corroding, once the patina is formed, it actually serves to protect the underlying metal from further corrosion. So, in a way, it’s a protective layer that prevents more damage to the object.

This patina is often desired for its aesthetic quality in architecture, sculpture, and jewelry. In fact, many artists and manufacturers will purposely induce patina on their works to give them a certain look or to make new items appear antique.