Wrought Copper-zinc and Copper-tin Binary Alloys—Compositions, Properties, Standards and Uses

These tables provide information on copper-zinc (brass) and copper-tin (phosphor bronze) wrought copper alloys. Compositions, characteristics and uses, typical mechanical properties and relevant standards are shown.

Complex brasses, those copper-zinc alloys with additional alloying elements are shown in wrought copper-zinc-lead (leaded brasses).

Information is split into two tables, both ordered by description and EN number.

The first table shows compositions—either a range or maximum—and typical uses. Note that not all elements listed as impurities are shown here. For the full chemical composition you should refer to the standard or the Copper and copper alloys. Compendium of compositions and products PD CEN/TS 13388.

The second table indicates typical mechanical properties, electrical conductivity and relevant BS EN standards. The material conditions defined by the standards are given and—where mandatory—this is indicated.

For more detail, the appropriate standard(s) should be consulted. Visit our page with details of standards and links to the BSI shop.

How to use these tables

  • Notes: please read these, at the foot of the table.
  • Column visibility button: click for drop down of column headings, and click on the column/s that you wish to hide.
  • Search: search just within a table.
  • Show entries: use this to change number of rows visible.
  • Print: this will print a portrait version of the table (use ‘Column Visibility’ to hide columns, as required). The notes at the foot of the table will not be printed.
  • Green + button: click to view more columns.

Wrought Copper-zinc and Copper-tin Binary Alloys—Compositions and Uses

DescriptionEN
Number
EN
Symbol
Nearest
Old BS
Equiv.
Cu
%
P
%
Pb
%
Sn
%
Zn
%
Others
%
Characteristics and Uses
Copper–zinc (Brass)CW500LCuZn5CZ12594.0-96.0-0.050.1Rem.0.3 NiVery good cold working properties. Conductivity 56% IACS. Used for ordnance, connectors, contacts, shell casings, detonator caps.
Copper–zinc (Brass)CW501LCuZn10CZ10189.0-91.0-0.050.1Rem.0.3 NiVery good cold working properties. Conductivity 44% IACS. Used for architecture, ordnance leadframes, wave guides, rotor bars, detonator caps, shell casings.
Copper–zinc (Brass)CW502LCuZn15CZ10284.0-86.0-0.050.1Rem.0.3 NiVery good cold working properties. Conductivity 37% IACS. Used for architecture (BS EN 1172), contacts, radiators, conduits, costume jewellery, heat exchangers.
Copper–zinc (Brass)CW503LCuZn20CZ10379.0-81.0-0.050.1Rem.0.3 NiVery good cold working properties. Conductivity 33% IACS. Used for architecture contacts, radiators, conduits, costume jewellery, heat exchangers.
Copper–zinc (Brass)CW504LCuZn28-71.0-73.0-0.050.1Rem.0.3 NiVery good cold working properties for extreme deep drawing and cold forging applications.
Copper–zinc (Brass)CW505LCuZn30CZ10669.0-71.0-0.050.1Rem.0.3 NiVery good cold working properties for extreme deep drawing and cold forging applications. Most ductile copper alloy.
Copper–zinc (Brass)CW506LCuZn33-66.0-68.0-0.050.1Rem.0.3 NiGood cold working properties for deep drawing and cold forging applications.
Copper–zinc (Brass)CW507LCuZn36CZ10763.5-65.5-0.050.1Rem.0.3 NiGood cold working, simple forming.
Copper–zinc (Brass)CW508LCuZn37CZ10862.0-64.0-0.10.1Rem.0.3 NiGood cold working, simple forming.
Copper–zinc (Brass)CW509LCuZn40CZ10959.0-61.5-0.20.2Rem.0.3 NiHot working, limited ductility at room temperature. Muntz metal. Available as hollow rod.
Copper–zinc (Brass)CW510LCuZn42-57.0-59.0-0.20.3Rem.0.3 NiLead free. Approved for drinking water contact under 4MS. Hot worked. 50% machining index. Available as hollow rod.
Copper–zinc (Brass)CW511LCuZn38As-61.5-63.5-0.20.1Rem.0.02-0.15 As
0.3 Ni
DZR. 40% machining index. Approved for drinking water contact under 4MS. Available as hollow rod.
Copper–tin (Phosphor Bronze)CW450KCuSn4PB101Rem.0.01-0.40.023.5-4.50.20.2 NiReadily cold worked. Good corrosion and corrosion fatigue properties. Conductivity 21% IACS. Used for architecture (BS EN 1172), springs, instrument components, wire cloth, mesh, condenser tube-plates and vessels, and electronic components.
Copper–tin (Phosphor Bronze)CW451KCuSn5PB102Rem.0.01-0.40.024.5-5.50.20.2 NiReadily cold worked. Good corrosion and corrosion fatigue properties. Conductivity 17% IACS. Used for springs, instrument components, wire cloth, mesh, condenser tube-plates and vessels, and electronic components.
Copper–tin (Phosphor Bronze)CW452KCuSn6PB103Rem.0.01-0.40.025.5-7.00.20.2 NiStrength increases as tin content increases. Readily cold worked. Good corrosion resistance and corrosion fatigue properties. Conductivity 16% IACS. Used for springs, instrument components, wire cloth, mesh, condenser tube plates and vessels and electronic components.
Copper–tin (Phosphor Bronze)CW453KCuSn8PB104Rem.0.01-0.40.027.5-8.50.20.2 NiHigh strength, excellent wear resistance. Used for switchgear, pump and valve components.
Copper–tin (Phosphor Bronze)CW454KCuSn3Zn9-Rem.0.20.11.5-3.57.5-10.00.2 NiGood formability, conductivity and corrosion resistance. Applications in building, electrical, industrial and consumer goods.
Copper–tin (Phosphor Bronze)CW455KCuSn4Pb2P-Rem.0.2-0.41.5-2.53.5-4.50.30.2 NiFree-machining phosphor bronze.
Copper–tin (Phosphor Bronze)CW456KCuSn4Pb4Zn4-Rem.0.01-0.43.5-4.53.5-4.53.5-4.50.2 NiGood conductivity, excellent machinability antigalling. Used for bushes, bearings, pinions, shafts and gears.
Copper–tin (Phosphor Bronze)CW457KCuSn4Te1P-Rem.0.1-0.4-4.0-5.00.30.5-1.0 Te
0.2 Ni
Free-machining phosphor bronze.
Copper–tin (Phosphor Bronze)CW458KCuSn5Pb1-Rem.0.01-0.40.5-1.53.5–5.50.30.2 NiFree-machining phosphor bronze.
Copper–tin (Phosphor Bronze)CW459KCuSn8P-Rem.0.2-0.40.057.5-8.50.30.3 NiExcellent wear resistance, bearings.
Copper–tin (Phosphor Bronze)CW460KCuSn8PbP-Rem.0.2-0.40.1-0.57.5-9.00.30.3 NiFree-machining phosphor bronze.
Wrought Copper-zinc and Copper-tin Binary Alloys—Compositions and Usescopperalliance.org.uk

Table Notes:
Compositions are given as either a range or a maximum.

Wrought Copper-zinc and Copper-tin Binary Alloys—Properties and Standards

DescriptionEN
Number
EN
Symbol
Nearest
Old BS
Equiv.
0.2%
Proof
Strength
(N/mm2)
Tensile
Strength
(N/mm2)
Elong-
ation
(%)
Hardness
(HV)
1652
Plate,
Strip,
Sheet,
Circles
For general purposes
1654
Strip for
Springs,
Connectors
12163
Rod
For general purposes
12164
Rod for
Free Mach-
ining
12165
Forging
Stock
12166
Wire
12167
Profiles,
Rectang-
ularBar
12168
Free
Machin-
ing
Hollow
Rod
12420
Forgings
12449
Tubes
For general purposes
Characteristics and Uses
Copper–zinc (Brass)CW500LCuZn5CZ12560-420240-420 45-450-125HRHMRVery good cold working properties. Electrical 56% IACS. Ordnance, connectors, contacts, shell casings, detonator caps.
Copper–zinc (Brass)CW501LCuZn10CZ101120-560240-600 45-260-165HRHMRGHMRHMRVery good cold working properties. Electrical 44% IACS. Architecture, ordnance leadframes, wave guides, rotor bars, detonator caps, shell casings.
Copper–zinc (Brass)CW502LCuZn15CZ102120-590260-630 50-265-170GHRHRYHMRGHMRHMRVery good cold working properties. Electrical 37% IACS. Architecture (BS EN 1172), contacts, radiators, conduits, costume jewellery, heat exchangers.
Copper–zinc (Brass)CW503LCuZn20CZ103120-590260-630 50-265-170GHRHMRGHMRHMRVery good cold working properties. Electrical 33% IACS. Architecture contacts, radiators, conduits, costume jewellery, heat exchangers.
Copper–zinc (Brass)CW504LCuZn28120-420310-500 30-290-160Very good cold working properties for extreme deep drawing and cold forging applications.
Copper–zinc (Brass)CW505LCuZn30CZ106130-430300-490 55-165-200GHRHRYHMRGHMRHMRVery good cold working properties for extreme deep drawing and cold forging applications. Most ductile copper alloy.
Copper–zinc (Brass)CW506LCuZn33120-420300-500 50-265-160GHRGood cold working properties for deep drawing and cold forging applications.
Copper–zinc (Brass)CW507LCuZn36CZ107130-500280-580 50-365-190GHRHRHMRGHMRHMRHMRGood cold working, simple forming.
Copper–zinc (Brass)CW508LCuZn37CZ108130-500280-580 50-365-190GHRHMRMHGHMRHMRHMHMRGood cold working, simple forming.
Copper–zinc (Brass)CW509LCuZn40CZ109200-420340-500 45-690-150HRHMRMHHMRHMRHMHMRHot working, limited ductility at room temperature. Muntz metal. Hollow rod.
Copper–zinc (Brass)CW510LCuZn42220-350360-500 20-295-170HMRHMRMHGHMRHMRHMRHMLead free. Approved for drinking water contact under 4MS. Hot worked. 50% machining index. Hollow rod.
Copper–zinc (Brass)CW511LCuZn38As200-250280-400 30-870-135HMRHMRMHHMRHMRHMDZR. 40% machining index. Approved for drinking water contact under 4MS. Hollow rod. .
Copper–tin (Phosphor Bronze)CW450KCuSn4PB101290-610190-850 50-575-230HRHRYGHMRReadily cold worked. Good corrosion and corrosion fatigue properties. Architecture (BS EN 1172). Springs, instrument components, wire cloth, mesh, condenser tube-plates and vessels, and electronic components. 21% IACS.
Copper–tin (Phosphor Bronze)CW451KCuSn5PB102240-670310-720 55-275-230HRHRYHMRReadily cold worked. Good corrosion and corrosion fatigue properties. Springs, instrument components, wire cloth, mesh, condenser tube-plates and vessels, and electronic components. 17% IACS.
Copper–tin (Phosphor Bronze)CW452KCuSn6PB103260-800350-900 55-380-250HRBHRYHMRGHMRHMRHMRStrength increases as tin content increased. As above 16% IACS.
Copper–tin (Phosphor Bronze)CW453KCuSn8PB104280-800390-920 40-485-270HRBHRYHMRGHMRHMRHMRHigh strength, excellent wear resistance, switchgear, pump and valve components.
Copper–tin (Phosphor Bronze)CW454KCuSn3Zn9200-620320-700 40-280-210HRHRGood formability, conductivity & corrosion resistance. Applications in building, electrical, industrial and consumer goods.
Copper–tin (Phosphor Bronze)CW455KCuSn4Pb2P400-500480-550 10-5150-210HMRFree-machining versions of above alloys.
Copper–tin (Phosphor Bronze)CW456KCuSn4Pb4Zn4350-680450-750 15-2150-210HMRGood conductivity, excellent machinability anti galling. Used for bushes, bearings, pinions, shafts, gears.
Copper–tin (Phosphor Bronze)CW457KCuSn4Te1P300-400380-480 15-2140-160 Free-machining versions of above alloys.
Copper–tin (Phosphor Bronze)CW458KCuSn5Pb1350-680450-750 15-2150-210HMRFree-machining versions of above alloys.
Copper–tin (Phosphor Bronze)CW459KCuSn8P220-680390-750 40-585-210HMRHMRExcellent wear resistance, bearings.
Copper–tin (Phosphor Bronze)CW460KCuSn8PbP280-550460-650 40-5125-180HMRFree-machining versions of above alloys.
Wrought Copper-zinc and Copper-tin Binary Alloys—Properties and Standardscopperalliance.org.uk

Table Notes:
1652, 12163 and 12449 are for general purposes.
1N/mm2= 1MPa

B – mandatory spring bending limit
G – mandatory grain size
H – mandatory hardness
M – as manufactured
R – mandatory tensile strength
Y – mandatory 0.2% proof strength