Alloys

About Alloys

There are a number of different alloys commonly used in cymbals. The easiest way to determine the alloy of an unknown cymbal is visually. However, the colour may be difficult to judge in digital photographs. It is recommended that when trying to identify a cymbal that it be done in person. Comparing to a cymbal of a known alloy is helpful if one is not familiar with the hues of the different alloys. Here are a few examples of the ways in which colours can present differently for cymbals made from the same alloy.

(images coming)

The major element in most cymbal alloys is copper, combined with one of three second components: tin (for bronze), nickel (nickel silver), and zinc (brass). Although there are very small amounts of other elements usually contained in cymbal alloys (for example, raw copper naturally contains a small amount of silver), the major components define the sonic properties. The shorthand way to refer to a bronze alloy is the amount of tin is mixed in with the main metal ingredient, copper. So B8 is 8% tin to 92% copper, and B20 is 20% tin to 80% copper.

Note that the proportion of tin can vary up or down a bit (1% or 2%) from the ideal ratio and the alloy still meets the specification. So B19, B20 and B21 are all within the B20 spec. B23 is different enough to rate a different name. B22 is in between, and we will come back to that when we get to some specific lab results.

The Brass and Nickel-Silver alloys do not fit into this shorthand naming Bxx for bronze because they don't use tin.

B20 Alloy

B20 (CuSn20) tends to have a silver or white colour hue. It is more pale than either the B15 and B8 alloys. The copper in the alloy will oxidize when exposed to excessive moisture.

Examples of B20 cymbals:

B23 Alloy

B23 (CuSn23) is an "entriched tin" alloy which is used in China, and in some Turkish brands.

Examples of B23 cymbals:

B25 Alloy

B25 (CuSn25) is another "enriched tin" alloy which is used in Turkey. Laboratory analysis has so far shown that B25 may have more like 23% tin rather than have 25%.

Examples of B25 cymbals:

B15 (Paiste Signature) Alloy

B15, or Proprietary Signature Bronze (PSB) alloy, can be identified by lusterous yellow colouration. Like all bronze, a blue/green oxide will be found when exposed to excessive moisture. This cupric oxide is what gives the Statue of Liberty it's characteristic colour. The patent for Paiste Signature Alloy (US patent number ) actually covers B13 to B18, narrowing down to B15 as giving the best results.

This alloy is now out of patent and Zildjian experimented with a series called [Project 391] in B15 in 2014.

Examples of B15 cymbals:

B8 Alloy

B8 bronze (CuSn8, aka 2002 alloy in Paiste terminology) has a noticeable orange hue to it. This is readily seen in clean cymbals, but is also present in cymbals that have developed a patina. B8 had been in wide industrial use for decades when in 1963 Paiste decided to make cymbals from it. The still lasting success of their 2002 series (and many other cymbal lines) justifies this decision. The sound character of B8 is less neutral and more focused than that of B20. This is why B8 cymbals feel louder and more cutting to some drummers.

Examples of B8 cymbals:

B12 Alloy

B12 bronze is an intermediate tin level between the more common B8 and B12.

Examples of B12 cymbals: Zildjian ZHT series (HT for High Tin)

Brass

Brass (MS63) cymbals have a colour similar to B15 although lacking the luster. They also feel lighter and warmer due to the density and thermal conductivity of the metal. Brass has a reputation for being a material which is not used for high quality cymbals, but there are some cymbalmakers like xx who create high quality hand hammered brass cymbals. So the material is not the sole determinant of sound. The material is just one factor in cymbal sound. How the material is worked is another, maybe even a more important factor. The host of different sounds found in B20 cymbals demonstrates how other factors can influence the how a cymbal sounds.

Examples of Brass cymbals:

Nickel Silver (NS12)

Cymbals made of nickel silver have a steely silver colour. This colour tends to be more sterile looking then B20 alloy, resembling steel in many cases. Nickel silver is known for not corroding easily and may only have a light surface patina, rendering them more of a grey colour. If exposed to moisture, they will not develop the blue/green oxide indicative of cupric alloys.

Examples of Nickel Silver cymbals:

Steel

Cymbals made from steel have been made by some of the smaller cymbal producers. They do not make up a large proportion of the cymbals made.\

Examples of Steel cymbals: