CUZN30 : yellow brass

CUZN30 brass, also known as C26000, is an alloy of copper and zinc. Its copper content is 70% copper and 30% zinc. This yellow brass has the highest ductility of all yellow brass. It is very easily polished, nickel-plated or chromium-plated and is therefore widely used. It is mostly cold-formed.


Cu Zn 30 standards

At the international level, the names are different and CU ZN30 is referred to in different ways:
  • France (AFNOR): Cu Zn 30 (or CUZN30)
  • Germany (DIN): Cu Zn 30 (or CUZN30)
  • Europe (EN): CW505L
  • ASTM : C26000


Uses of CUZN30

Brass CuZn30 has good cold working properties. With excellent mechanical properties, very good flexural strength and low conductivity, its main areas of application are :
  • Plumbing equipment: bathroom equipment, siphons, fittings, ...
  • Automotive equipment: thermostats, designers, tanks, ...
  • Electrical products : lighting, lamps, reflectors, ...
  • Everyday consumer products: animal cages, jewellery, electrical outlets, rivets, screws, etc.
  • Industrial equipment: chains, tubes, springs, ...
  • Military equipment: ammunition, ...
  • Household appliances

Read the detailed technical data sheet of brass Cu Zn 30

Hot deformability Medium
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 Medium
Arc welding with coated wire electrode Not recommended
Electric resistance welding :
Per point Medium
Placed end to end Good
Corrosion resistance :
Nitric acid Bad
Sulphuric and acetic acids Bad
Sea water Medium
60% hydrochloric and sulphuric acids Bad
Marine Atmosphere Good


Chemical composition in % Physical characteristics (at 20°C)
Zn Remains Density (kg/dm3) 8.55
Cu 69.0 - 71.0 Electrical conductivity (%IACS) 28
Pb 0.05 max Electrical resistivity (MS/m) 6.2
Sn 0.2 max Thermal conductivity (W/m.K) 121.4
Al 0.02 max Modulus of elasticity (Kn/mm²) 117
Fe 0.05 max Coef. of thermal expansion (10-6/K) 19
Ni 0.3 max Melting temperature (°C) 910 - 965
Total other impurities 0.1 max Shear modulus (kN/mm²) 41.5


Brass supplier CuZn30 C26000

In order to avoid unnecessary stock of CuZn30 brass, order enough CuZn30 brass to meet your needs. With Métal Rolling Services, there is no minimum quantity required to order your C26000. You also benefit from a custom-made product by choosing the length, width, thickness and hardness of your brass.

Contact us if you would like more information about our products or a quotation for brass CuZn30/C26000.

Other alloys available to order

In order to meet all requests, we offer you other brass and copper in the formats you require:


CuETP - CuDHP - CuDLP - CuPHC - CUZN10 - CUZN15 - CUZN33 - CUZN36 - CUZN37 - Maillechort