Cu Zn 33 : hot-formed yellow brass


CUZN33 alloy, also known as C26800, is a yellow brass that is hot-formed. Cu Zn 33, as its designation indicates, is composed of 33% zinc and 67% copper. This brass is a stronger alloy than CuZn30. It has very good cold forming properties.

Laiton CUZN33

CUZN33 International Standards

At the international level, the standards are different and it is referred to in different ways: 
  • France (AFNOR): Cu Zn 33 (or CUZN33)
  • Germany (DIN): Cu Zn 33 (or CUZN33)
  • Europe (EN): CW506L
  • ASTM: C26800

Cu Zn 33 and its fields of application

Brass CuZn33 or C26800 has very good deep-drawing properties and good mechanical strength. It also has good resistance to water, water vapour and many organic liquids.
Concerning the main uses of CUZN33 brass, it is used in different sectors such as :
  • Automotive equipment: tanks, ...
  • Construction and building: handrails, ...
  • Marine equipment
  • Plumbing equipment: grilles, various accessories, ... 
  • Electrical products: lighting, lamps, socket casings, ...
  • Construction-related hardware: locks, plates, ...
  • Industrial equipment: chains, springs, ... 

Read the technical data sheet of brass CUZN33

Hot deformability Medium
Cold deformability Excellent
Cold reduction before annealing 85% 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) 8.5
Cu 66.0 - 68.0 Electrical conductivity (%IACS) 27
Pb 0.05 max Electrical resistivity (MS/m) 6.4
Sn 0.2 max Thermal conductivity (W/m.K) 121
Al 0.02 max Modulus of elasticity (Kn/mm²) 114
Fe 0.05 max Coef. of thermal expansion (10-6/K) 19
Ni 0.3 max Melting temperature (°C) 900 - 940
Total other impurities 0.1 max Shear modulus (kN/mm²) 40.5


Brass supplier CuZn33 C26800

Metal Rolling Services, a metal supplier, offers you the order of CuZn33 in the quantity you need and its delivery. You avoid superfluous stocks because you only order what you need, while benefiting from a tailor-made service. You choose the hardness, thickness, length and width you require.

To place your order for brass Cu Zn 33 C26800 or to obtain a quotation, you can contact us by e-mail or by telephone.

Other brass alloys available

We offer you several alloys of brass, copper and zinc, to be ordered without minimum purchase:

CuETP - CuDHP - CuDLP - CuPHC - CuOF - CUZN10 - CUZN15 - CUZN30 - CUZN36 - CUZN37 - Maillechort