Brass CUZN10 : copper and zinc alloy

CUZN10 brass, also known as C22000, is an alloy of copper and zinc. As its name indicates, it is composed of 10% zinc and 90% copper. The CUZN10 alloy has a red/gold colour and can also be defined as half-red brass. It is very efficient for cold forming, embossing, pressing or hammering.

Cu Zn 10 : standards 

At the international level, the standards are different and CU ZN 10 is referred to in different ways: 

CUZn10 - CW501L

Properties and applications of CUZN10

The characteristics of the Cu Zn10 alloy include excellent mechanical properties, very good flexural strength and low conductivity. It also has good corrosion resistance, comparable to that of copper. Thanks to its 90% copper content, C22000 brass is not susceptible to seasonal cracking (intercrystalline cracking due to sudden temperature changes).
In terms of its applications, copper alloy CuZN10 is used in many sectors such as the automotive industry (fuel injectors, etc.), decoration, household appliances (resistance wires, etc.), the manufacture of strings for musical instruments such as guitars, heating applications, etc.

View CUZN10 brass technical data sheet

Hot deformability Good
Cold deformability Excellent
Cold reduction before annealing 90% max
Machinability (Basic reference: brass from
bar turning CuZn39Pb2 =100)
Soft soldering Excellent
Hard soldering Excellent
Arc welding in a gaseous atmosphere Good
Arc welding with coated wire electrode Not recommended
Electric resistance welding :
Per point Not recommended
Placed end to end Good
Corrosion resistance :
Nitric acid Bad
Sulphuric and acetic acids Good
Sea water Good
60% hydrochloric and sulphuric acids Medium
Marine Atmosphere Good


Chemical composition in % Physical characteristics (at 20°C)
Zn Remains Density (kg/dm3) 8.8
Cu 89.0 - 91.0 Electrical conductivity (%IACS) 44
Pb 0.05 max Electrical resistivity (MS/m) 3.9
Sn 0.2 max Thermal conductivity (W/m.K) 188
Al 0.02 max Modulus of elasticity (Kn/mm²) 127
Fe 0.05 max Coef. of thermal expansion (10-6/K) 18.2
Ni 0.3 max Melting temperature (°C) 1025 - 1045
Total other impurities 0.1 max Shear modulus (kN/mm²) 46.5


Brass supplier CuZn10 C22000

Metal Rolling Services, supplier of ferrous and non-ferrous metals, offers the ordering and delivery of C22000/CuZn10 in sufficient quantities according to your needs. This way you avoid unnecessary stock of product and conserve your cash flow. As a tailor-made service, you order your Cu Zn 10 in the thickness, width, length and hardness you require.
Contact us by e-mail or by phone to obtain your quotation or to place your order for CuZn10/C22000.

Our other alloys to order

We also offer you other copper and zinc alloys with different chemical compositions, to be ordered without minimum quantities:

CuETP - CuDHP - CuDLP - CuPHC - CUZN15 - CUZN30 - CUZN33 - CUZN36 - CUZN37 - Maillechort