Data Sheet

Material Datasheet CuSn6
CuSn6
Description
Cu Sn P Zn Fe
[%] [%] [%] [%] [%]
rem 5.5-7.0 0.01-0.4 max 0.2 0.1 max
Physical
properties
Melting
point
Density
c
p
@ 20°C
Electrical
cond.
Thermal
cond.
[°C] [g/cm³] [kJ/kgK] [%IACS] [W/mK]
1040 8.8 0.377 ≥16 75
Mechanical
properties
Tensile
Strength
Yield
Strength
Elongation
A
50
Hardness
HV
[MPa] [MPa] [%] [-] GW BW GW BW
R350 350-420 ≤300 ≥45 80-110 0 0 0 0
R420 420-520 ≥360 ≥17 125-165 0 0 0 0
R500 500-590 ≥460 ≥8 160-190 0 0 1 2
R560 560-650 ≥530 ≥5 180-210 0.5 1 2 3
R640 640-730 ≥610 ≥3 200-230 1 3.5 3 4
R720 ≥720 ≥690 - ≥220 - - - -
Electrical
conductivity
r=x*t(thicknesst≤0.5mm)
GW bend axis transverse to rolling
direction. BW bend axis parallel to
rolling direction.
Resistance welding
good
Machinability
not recommended
Comparable standards:
Aurubis designations:
UNSC51900•ENCW452K•JISC5191
C519•PNA282
[%]
CuSn6 is a solid solution strengthened copper alloy (bronze) with 6% tin. The alloy has high
strength and good springiness at an adequate conductivity and is well suited for cold
forming operations. The alloy is wear-resistant, has very good corrosion resistance and can
be readily soldered.
Fields of application are stamped parts, connectors, spring contacts, springs, metal hose,
the paper industry, ship and apparatus manufacturing as well as electrical and mechanical
engineering.
This alloy is in accordance with RoHS 2002/96/CE for electric & electronic components and 2002/53/CE for the
automotive industry.
0.2 max
Bend ratio
90° [r]
Bend ratio
180° [r]
Brazing
excellent
Hot formability
not recommended
Cold formability
excellent
Soldering
excellent
[GPa]
[10
-6
/K]
118
Composition
Ni
Pb
[%]
0.02 max
The electrical conductivity depends on chemical composition, the level of cold deformation
and the grain size. A high level of deformation as well as a small grain size decrease the
conductivity.
Young's
modulus
α
@ 20°C
18.5
Note: The specified conductivity applies to the
soft condition only.
c
p
specific heat capacity
αcoefficientofthermalexpansion
Other tempers are available upon request.
Oxyacetylene welding
fair
Gas shielded arc welding
good
Fabrication
properties
Aurubis.com
1 - 2