CuZn20

INTERNATIONAL REFERENCES

Egm

OT80

En

CuZn20

DIN CEN

CW503L

ASTM(CDA)

C24000

AFNOR

CuZn20

BS

CZ103

JIS

C2400


MAIN CHARACTERISTICS 

CuZn20 has excellent cold forming, good hot forming properties and is well suited for e.g. coinage, beating, embossing. This alloy has a higher strength than pure copper. It is principally used in jewellery, metal goods, watch industry and in electronic industry for installation parts.

It has a good resistance to fresh water, neutral or alkaline saline solutions, organic compounds as well as land, sea, and industrial atmosphere. Not particularly resistant to acids, hydrous sulphur compounds, hydrous ammonia in the non-stress-relieved condition. Low sensitivity to stress corrosion cracking. CuZn20 is not sensitive to dezincification, that could occur in water with high clorine content and low carbonat-hardness. Not resistant to oxidizing acids, hydrous sulphur components.


CHEMICAL COMPOSITION

Cu
[%]

79 ,0 - 81,0

Al
[%]

≤ 0,02

Fe
[%]

≤ 0,05

Ni
[%]

≤ 0,3

P
[%]

-

Pb
[%]

≤ 0,05

Sn
[%]

≤ 0,1

Zn
[%]

Rest

Σ other
[%]

≤ 0,1


FABRICATION PROPERTIES
Cold Forming Properties
Hot Forming Properties
Electroplating Properties
Hot Tinning Properties
Soft Soldering
Brazing

COMPLIANCE
2000/53/CE ELV
2011/65/CE ROHS
2015/863/CE
2017/2102/CE
2018/741/CE
2002/96/CE RAEE

PHYSICAL PROPERTIES
Density 8.67 g/cm3
Electrical Conducivity 19 MS/m
Electrical Conducivity 33 IACS %
Thermal Conducivity 142 W/mK

MECHANICAL PROPERTIES
Temper Tensile Strength
Rm [N/mm2]
Yeld Strength
Rp0.2 [N/mm2]
Elongation
A50 [%]
Hardness
HV10
Grain size [mm]
R270 270-320 ≤ 150 ≥ 38 - -
H055 - - - 55-85 -
G010 - - - ≤ 105 ≤ 0.015
G020 - - - ≤ 85 0.015-0,030
G035 - - - ≤ 75 0,025-0,050
R320 320-400 ≥ 200 ≥ 20 - -
H085 - - - 85-120 -
R400 400-480 ≥ 320 ≥ 5 - -
H120 - - - 120-155 -
R480 ≥ 480 ≥ 440 - - -
H155 - - - ≥ 155 -

Please note: the above values are to be considered in compliance with UNI-EN 1652.


TYPES AND FORMAT AVAILABILITY
Horizontal axis
Thickness da 0,2 a 3,00 mm
Widht da 340 a 1050 mm
Internal diameter 300 / 400 / 500 mm
External diameter  <1500 mm
Vertical axis
Thickness da 0,2 a 3,00 mm
Widht da 4 a 500 mm
Internal diameter 100 / 140 /300 / 400 / 500 mm
External diameter  <1500 mm
Drums
Thickness da 0,2 a 2,00 mm
Widht da 4 a 60 mm
Internal diameter 300 / 400 / 500 mm
External diameter  <1000 mm
Multistrips
Thickness da 0,2 a 1,5 mm
Widht da 4 a 60 mm
Internal diameter 300 / 400 / 500 mm
External diameter  <1500 mm

Please note: The dimensions indicated are to be considered purely indicative. Specific requirements regarding width, thickness, internal and / or external diameter, must be evaluated and agreed upon when ordering.


OTHER SERVICES

Our Company offers a wide range of additional services, helping to satisfy the most varied needs. Surface treatments, like galvanic tinning, silvering, gold plating, as well selective plating, in order to improve the electrical and surface behavior in critical component conditions.