On the other hand, bronze has a reddish-brown appearance. Bronze vs. Brass. I would doubt very much that the figure is cast iron. Step 1 Take a look at the color of the coin. You can also tell the difference between bronze and brass because bronze will have faint rings on its surface. Both can have other things added too, though bronze is much more augmented in this regard. Brass tends to be a dull gold color, while brass looks more brownish. A mixture of tin and copper, bronze has been used for thousands of years to create both full-sized statues and smaller figurines through the process of casting -- i.e., pouring the molten alloy into a mould. Bronze is used in the construction of sculptures, musical instruments and medals, and in industrial applications such as bushings and bearings, where its low metal on metal friction is an advantage. It will detect the presence of zinc in the metal. But with a few simple tools, one can easily tell the difference. Written by: Graham Rix. Brittle, not malleable; breaks if bent. Actually, antique brass has been fetching some pretty good value in the market as well. Those looking to separate them from the more valuable copper pipes (reddish) in color, toss the “yellow” metals together and call it brass. If you are searching for the best way to identify between brass and bronze, you only have to take a closer look at their color. In addition, brass is more malleable than bronze. Brass. These tests, including magnetism and chemical reaction tests, will also help you identify whether your item’s makeup is solid brass or simply has a brass coating. Bronze is a metal alloy containing copper as the main constituent and tin about 12%. Usually 88% copper and 12% tin. Sparks indicate ferrous metal. Many people find it really difficult to differentiate between Bronze, Brass, and Copper. 1. 04-23-2015, 04:20 PM #22. fciron. The oxidation is a dark brown. Composition. Brass Bronze; Composition: Brass is an alloy of copper and zinc. Lesser grades of bronze can also have some zinc in the alloy, resulting in properties closer to brass. Copper, by itself, is too soft, and Tin on its own is too brittle; it breaks too easily. To tell if it's cast iron or any other ferrous metal, you can use a grinding wheel on it and look for sparks. How to identify between brass and bronze? Originally Posted by Tank. Brass is great for making items like musical instruments or furniture. It is worth taking a moment to consider the difference between an Art Deco sculpture made in bronze and one made in spelter, and the qualities of each material. The two metals are generally copper (90%) and tin (10%). New brass is shiny bright, without any hint of the copper. How to Tell Authentic Bronze. (Yeah, I know, taking a grinding wheel (even a Dremel) to a case is probably a no-no.) Both will weather to the fine verdigris patina without maintenance. Bronze forms a patina or corrosion "skin" as it ages. Dates to about 3500 BC. How do you tell the difference between brass and bronze? Before you can determine whether the lamp or piece of hardware you want to restore is made of aged brass, however, you need to be aware of some of brass’s properties. Most bronze is an alloy of copper and tin, but architectural bronze actually has a small amount of lead in it. Yellow brass is sometimes called gold brass, but it's not the same thing. In ancient times ‘bronze’ was a term that could denote copper or the far more durable alloy fusion of copper and tin. Bronze vibrates like a bell when hit. Most metal statues that have a dark blue-green or brownish patina are going to be bronze. Difference between Brass and Bronze, differencebetween.info, Why is brass more malleable than bronze?, quora.com, Rotax Metals There is what is called red brass. Use a magnet. So, what exactly make it possible for them to tell the type of the materials? It can easily be made molten at around 1600F and poured into whatever shape you want. Now it could be plated brass on steel, which would make a magnet stick. Copper and brass may look alike on the outside, but further scrutiny will tell you another side of the story. Brass is an alloy of copper and zinc and to me seems very malleable, shapeable, and fileable. Therefore, brass is cheaper than bronze. Bronze is an alloy made by melting two different metals and mixing them. Alloy of copper and tin, may include phosphorus, manganese, aluminum, or silicon. BRONZE. Copper is an unusual metal in that, like silver, gold, and tin, it can appear in ``native" form -- that is, as a fairly pure metal, just lying around. Muted yellow, similar to dull gold. Bronze has a dark coppery color and gets a green oxide over a period of time. Comparing Copper and Brass. Take the piece to be chemically tested. bronze's melting point is 850-1000°C (1562-1832°F) depending on how much of each metal is in it. I assume the seller is not sure. Some figures vary between different types of bronze/brass, so do your research if you plan on testing the limits of your valve. If it's a fake, it's quite possible you'll spot small differences from the original. Any way to tell them apart? Unfortunately, many metals resemble brass, which can make it difficult to identify a brass item. Solid brass is non-magnetic. On the other hand, some people easily point out the difference, just by looking at the material in front of them. Learn More → If you enjoy collecting antiques or found artifacts and restoring them, you may be interested in learning to identify old brass. 2. If clean and not oxidized, the brass is a golden yellow color and the copper is reddish brown color we call copper color. The reason I want to know is that I bought a beautiful pair of andirons at a great price. It’s light red and turns greenish with oxidation. It’s often mixed with other metals to … Bronze. How to identify authentic Antique Bronze Sculpture. I have a non-critical part I'd like to make out of bronze. Bronze, brass, and copper can be difficult to tell apart if you don’t know what factors to look for. For more info on bronze and brass in valves and on their own, check out this article from ValveMan.com and this one from HenssgenHardware.com. Some other metals and nonmetals or metalloids are also added, depending on the requirements, to obtain desired properties. Copper. View Profile View Forum Posts Stainless Join Date Oct 2009 Location Louisville, KY, USA Posts 1,000 Post Thanks / Like Likes (Given) 215 Likes (Received) 222. Discovered s. Dates to about 500 BC. Brass is corrosion-resistant, so if it shiny metallic yellow and isn't Gold, it is probably Brass. The answer is simple. Brass is comprised of copper and different ratios of zinc. They differ in the amont of metals used in the amalgam. Difficult to cast. It can be polished to a shiny lustre with little effort. Properties. Color. I see alot of e-bay listings for items stating brass/bronze. I cleaned them and the color is not yellow brassy but not quite "bronzey" either. Bronze: An alloy of copper and tin. Below is a Comparison Chart that will clearly highlight the similarities and differences between the two metals: Brass vs Bronze. Difference Between Bronze, Brass and Copper. However, if you have an understanding of the different materials, it can actually be simple to tell the difference between them when items are placed in front of you. The first one is to scratch the metal with a file, brass is easier to but cut. But I honestly don't know whether I have brass or bronze. Its a threaded flange. The key difference between brass and bronze is that brass contains copper and zinc whereas bronze contains copper and tin. Bronze. Bronze is the familiar brownish color whereas brass is the more greyish greenish, bluish. Let’s start with some handy definitions… Bronze. A hand crank will rotate a threaded steel shaft and the shafting thread will push/pull this threaded flange. How to Tell the Difference Between a Bronze Coin and a Gold Coin By Egon Schiele A gold American Eagle bullion coin. Brass is worth more money due to it being made up almost entirely of copper, which is worth more than zinc. Weighs 4.71 ounces per cubic inch. However, various methods can determine whether you have found a brass antique or an antique composed of another metal. You can also heat the metal in a furnace, brass will melt faster. That would make it very heavy. What is Bronze? Bronze is a metal alloy consisting primarily of copper, usually with tin as the main additive, but sometimes with other elements such as phosphorus, manganese, aluminum, or silicon. Cast iron is a dull cement colour and bronze looks more copper-coloured. Both brass and bronze can be often found with piping and plumbing fixtures. 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