   | CuSn0,2 EN: - UNS: C14410 |    |
STOLBERG PNA 215
KME STOL 80
CuSn0,2 alloy is a tin bearing copper with low phosphorus as a deoxidizer. 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. Material has good formability at medium strength and good conductivity. Hot dip tinning, soldering and electroplating
Main applications are connected with heat and electric current transfer in electro-industry, electronics, automotive. Possible applications: heat exchangers, radiator fins, connectors and connector pins, high current capacity electrical wires, conductors and cables (especially automotive cables, super fine coaxial cables, busbars and other solid and multi-wire conductors), fuse/ relay boxes, punch screen, stamped and bent parts in electro industry, pins, electric terminals and micro-terminals, electric clamps, different carriers, electronic parts carriers, leadframes, electrical springs for lower loads, contacts and sliding contacts parts, electrical switches, semiconductor devices, different electro-automotive parts, chemical and medical equipment, wire electro discharge cutting systems.
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
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Chemical composition
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Value | Comments | |
| Cu [ wt.% ] | 99,515-99,895 | Calculated | |
| Fe [ wt.% ] | 0-0,05 | ||
| P [ wt.% ] | 0,005-0,02 | ||
| Pb [ wt.% ] | 0-0,015 | ||
| Sn [ wt.% ] | 0,10-0,20 | ||
| Zn [ wt.% ] | 0-0,1 | ||
| Others [ wt.% ] | 0-0,1 | ||
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Mechanical properties
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| UTS [MPa] | YS [MPa] | Elongation [%] | Hardness | Young’s modulus [GPa] | Kirchhoff’s modulus [GPa] | Poisson ratio |
| 220-460 | 98-410 | 2-25 | 60-1340 Comments: HV | 118-120 | 44 | 0,34 |
Material's mechanical and electrical properties in different tempers
Temper | Ultimate Tensile Strength UTS [MPa] | 0,2%Yield Strength YS [MPa] | Elongation at break during tensile test A50 [%] | Hardness [HV] | Literature |
|---|---|---|---|---|---|
R250 H60 | min250 | min. 140 | min 20 | 60-85 |
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R300 H85 | 300-370 | min.270 | min. 10 | 80-110 | |
R360 H105 | 360-430 | min. 310 | min. 7 | 110-130 | |
R420 H120 | 420-490 | min. 370 | min. 5 | 120-150 | |
R460 H135 | min. 460 | min. 410 | min. 4 | min. 135 |
Material's mechanical and electrical properties in different tempers (non European standards)
Temper | Ultimate Tensile Strength UTS [MPa] | 0,2%Yield Strength YS [MPa] | Elongation at break during tensile test A50 [%] | Hardness [HV] | Literature |
|---|---|---|---|---|---|
0 | max. 216 | - | min. 25 | max. 90 |
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1/4H | 216-294 | 98-196 | min 25 | 65-110 | |
1/2H | 255-333 | 216-304 | min.12 | 75-110 | |
H | 314-392 | 294-373 | min 5 | 95-130 | |
EH (spring) | 350-430 | min.333 | - | 200-140 |
Levels of electrical and mechanical properties of material in different temper
Elongation at break vs ultimate tensile strength at ambient temperature for material in different temper
Ultimate tensile strength of material as a function of cold working strain calculated via formula based on approximation of different experimental data
Vickers hardness as a function of heating temperature for 30 min heating time (hardness test at ambient temperature after heating), material in hard temper (H) and extra hard temper (EH)
Vickers hardness as a function of heating time at 300oC (hardness test at ambient temperature after heating), material temper R420
Literature for entire paragraph:
Softening temperature about 400-450oC
Material resistant to hydrogen embrittlement
Type of corrosion | Suitability | Literature |
|---|---|---|
Atmospheric | good |
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Marine environment | good |
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Stress crack | resistant |
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Hydrogen embrittlement | resistant | - |
Electrolytic | good |
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Other - oxidising acids | bad |
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Stress relaxation data for material in R460 temper. Remaining stress as a function of loading time (log scale) at temperatures 100oC, 150oC, 200oC, initial stress 50% YS and 80%YS, tests in parallel and transverse directions to rolling direction
The fatigue strength is dependent on the temper and it is approximately 1/3 of the tensile strength under bending load for 107 load cycles.
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Fabrication properties
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Value | Literature | Comments | |
| Soldering | excellent | | ||
| Brazing | excellent | | ||
| Hot dip tinning | excellent | | ||
| Electrolytic tinning | excellent | | ||
| Electrolytic silvering | good | | ||
| Laser welding | good | | ||
| Gas Shielded Arc Welding | excellent | | ||
| Capacity for Being Cold Worked | excellent | | ||
| Capacity for Being Hot Formed | excellent | | ||
Formability properties
Thickness t [mm] up to 0,5mm | Direction | Temper | ||||
|---|---|---|---|---|---|---|
R250 H60 | R300 H85 | R360 H105 | R420 H120 | R460 H135 | ||
90o | transverse | 0xt | 0xt | 0xt | 1xt | 1xt |
parallel | 0xt | 0xt | 0xt | 1xt | 1,5xt | |
180o | transverse | 0xt | 0xt | 0,5xt | 1xt | 1,5xt |
parallel | 0xt | 0xt | 1xt | 1,5xt | 2xt | |
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Technological properties
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| Melting temperature [°C] | Casting temperature [°C] | Castability | Annealling temperature [°C] | Homogenization temperature [°C] | Quenching temperature [°C] | Ageing temperature [°C] | Stress relievieng temperature [°C] | Hot working temperature [°C] |
| No data | No data | No data | 250-650 Comments: Annealling time: 1-3h | No data | No data | No data | 150-200 Comments: Stress relievieng time: 1-3h | 800-950 |
