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Engineered metals
for precision industries

Data sheet - CuSn3Zn9

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CuSn3Zn9
CHRYSOCALE

Cu reste Sn1.5-3 Zn7.5-10 Pb0.03 max

Chemical composition

CuBAL

Zn7.5-10

Pb0.03 max

P0.35 max

Sn1.5-3.0

Fe0.05 max

Alloy name
RLSA no.520
EN standardCW454K
DIN standard
UNS no.*C42500

*Unified Numbering System (USA)

Characteristics and main uses

Le CuSn3Zn9 possède d'excellentes propriétés de formage à froid, une bonne conductivité combinée à une résistance et une dureté élevées. La résistance à la corrosion, en particulier "l'eau de mer" et l'atmosphère industrielle, est bonne.

Les propriétés ressort sont bonnes.

Physical properties Units
Density (20°C) 8,75 Kg/dm³
Melting point 1010-1030 °C
Longitudinal elasticity modulus 112 GPa
Thermal conductivity W/m·K
Electrical conductivity >11.76 m/Ω·mm²
Electrical resistivity <0.085 µΩ·m
Linear expansion Coefficient 18,3 10⁻⁶·K⁻¹
IACS (International Annealed Copper Standard) 28 %
Poisson's ratio 0,34
Capabilities
Corrosion resistance2
Hot deformation1
Cold deformation4
Electrodepositing4
Diamond cutting4
Nitriding
Mechanical polishing4
Welding without filler3
Brazing4

1 poor | 2 average | 3 good | 4 very good | - no info

Heat Treatment / Hardening
Annealing temperature 400-600 °C
Temperature for stress relief treatment 200-300 °C
Hardening temperature °C
Hardening treatment time hour(s)

Alloy mechanical properties

CuSn3Zn9
Possible hardness range 80 - 225 HV
Possible Rm range 300 - 660 MPa

Non-exhaustive list of grades

Grade According to standard Hardness
(HV: Vickers)
min - max
Rm
(MPa)
min - max
Rp 0.2
(MPa)
min - max
Elongation
(%) where L0 = 100mm
min - max
L0 Grain size
(µm)
min - max
H080 80 - 110
H110 110 - 140
H140 140 - 170
H160 160 - 190
H180 180 - 210
H200 ≥ 200
R320 320 - 380 ≤ 230 ≥ 25 50
R380 380 - 430 ≥ 200 ≥ 16 50
R430 430 - 520 ≥ 330 ≥ 6 50
R510 510 - 600 ≥ 430 ≥ 3 50
R560 ≥ 560 ≥ 510
R660 ≥ 660 ≥ 610

Do not hesitate to ask us for your specific grades and parameters. We can make productions according to your needs.

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