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CuSn0,5
EN: CW129C
UNS: C18835
MANUFACTURERS LIST

CuSn (CuSn0,2 - CuSn0,5) material with 0,2-0,55% is tin addition id single phase copper alloy with good  mechanical and high electrical properties  connected with high wearing resistance. Material has higher than pure copper softening temperature and good creep, stress relaxation fatigue resistance. The alloy permits good corrosion resistance and has no stress cracking corrosion.

Applications

Main applications are connected with electric current transfer in electro-industry. Possible applications: trolley wires, wiring harnesses, connectors and connector pins, sliding contacts, electric springs, automotive electric parts, electromechanical components, forged parts.

Literature:

Rolled strips, rolled tinned strips,  rolled profiles with different height, extruded round or polygonal  rods, extruded sections, extruded tubes, drawn round or polygonal wires, drawn tubes.

Chemical composition

Chemical composition
Value Comments
Cu [ wt.% ]99,35-99,85
Calculated
Sn [ wt.% ]0,15-0,55

Others [ wt.% ]0-0,10

Chemical composition, wt%

Sn

Fe

P

Pb

Zn

Others

Cu

0,15-0,55

max. 0,10

max. 0,01

max. 0,05

max. 0,3

max. 0,5

Cu+Fe+Pb+P+Zn min. 99,5

Literature:

Mechanical properties

Mechanical properties
UTS
[MPa]
YS
[MPa]
Elongation
[%]
HardnessYoung’s modulus
[GPa]
Kirchhoff’s modulus
[GPa]
Poisson ratio
270-620
No data 3-30
No data 120-125
No data No data

Material's mechanical and electrical properties in different tempers/ diameters -wires

Temper /diameter

Ultimate Tensile Strength UTS [MPa]

Electrical conductivity

Elongation at break during tensile test A50  [%]

Hardness [HV]

 Literature:

annealed

max. 300

min. 68

 -

-

3,5

min. 485

min. 68

 -

 -

3,0

min. 510

min. 68

 -

 -

2,5

min. 540

min. 68

 -

 -

2,0

min. 570

min. 68

 -

 -

1,5

min. 610

min. 68

 -

 -

1,3

min. 620

min. 68

 -

 -

Material's mechanical and electrical properties in different cross sections - trolley wires

Cross section [mm]

Ultimate Tensile Strength UTS [MPa]

0,2%Yield strength YS [MPa]

Elongation at break during tensile test A50  [%]

Electrical conductivity [%IACS]

 Literature

80

min. 460

min.370

3-8

min. 72

100

min. 450

min. 370

3-8

min. 72

107

min. 430

min. 370

3-8

min. 72

120

min. 420

min. 370

3-8

min. 72

150

min. 420

min. 370

3-8

min. 72

Material's mechanical and electrical properties in different tempers (non european standards)

Temper

Ultimate Tensile Strength UTS [MPa]

Electrical conductivity [MS/m]

Elongation at break during tensile test A50  [%]

Hardness [HV]

 Literature

Soft O 10

max 303

min. 70

 -

 -

1/2H

typical 358

min. 70

 -

 -

H

typical 434

min. 70

 -

 -

Spring

typical 496

min. 70

 -

 -

Extra spring

min. 531

min. 70

 -

 -

Automotive cable electrical and mechanical properties

Alloying element concentration in copper

Ultimate Tensile Strength UTS [MPa]

Electrical conductivity [MS/m]

Elongation at break during tensile test A50 [%]

Hardness [HV]

Literature

0,25-0,35%Sn

min. 620

max. 43,5

min.1

-

Levels of electrical and mechanical properties of material in different tempers

Elongation at break vs ultimate tensile strength at ambient temperature for material in different temper (0,42%Sn)

Ultimate tensile strength of material as a function of cold working strain measured ambient temperature, (0,42%Sn)

Yield Strength as a function of strain (cold rolling), temperature 22oC (0,5%Sn)

Relation between yield strength and material grain size (Hall-Petch relationship, 0,3%Sn)

Relation between Hall-Petch relationship constant and tin content

Changes in mechanical behaviours of wire specimens processed and changes in grain size after final annealing and non-conventional processing by draw bending, material: Cu 0,27%Sn

Sample name

Final annealing condition

Temperature

Time

Fully annealed specimen (εWD=0,0)

673 K

600s

1/2EL specimen

623 K

600s

1/4EL specimen

623 K

360s

1/2TS specimen

623 K

60s

3/4TS specimen

573 K

240s

WD specimen (εWD=7,2)

-

-

Ultimate tensile stress vs total elongation for specimens in table

Mean grain size for specimens in table

Tin content effect on electrical conductivity of copper at ambient temperature

Tin content effect on Young’s modulus of material at ambient temperature (values calculated from approximation of experimental data)

Exploitation properties

Yield strength vs testing temperature relation for material in annealed temper (0,3%Sn)

Annealing temperatures for materials with different grain sizes, time of heating 0,5h (0,3%Sn)

Half softening temperature: 340-370 °C (0,4%Sn)

Type of corrosion

Suitability

Literature

Atmospheric

no data

 -

Marine environment

no data

-

Stress crack

no data

-

Hydrogen embrittlement

no data

Electrolytic

no data

 -

Other - oxidising acids

no data

 -

NO DATA AVAILABLE
NO DATA AVAILABLE

Cooper -tin alloy CuSn0,4 shows 60% better wearing resistance due to pure ETP copper (materials in hard tempers)

Wear rate data for trolley wire made from Cu (reference) and CuSn alloy and copper contact strip with and without electric current flow and with different friction conditions

Material bending fatigue life for different surface strains, material grain size 10µm (0,3%Sn)

NO DATA AVAILABLE
Fabrication properties

Fabrication properties
Value Comments
Solderingexcellent

Brazingexcellent

Oxyacetylene Weldingfair

Gas Shielded Arc Weldingfair

Capacity for Being Cold Workedexcellent

Capacity for Being Hot Formedexcellent

Forgeability Rating65

Technological properties

NO DATA AVAILABLE
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