   | CuSn0,15Te EN: - UNS: C14420 |    |
LUVATA: SM0701
CuSn0,15 alloy is a tin bearing tellurium copper with higher than pure copper softening temperature and good thermal conductivity. The alloy permits good corrosion resistance and has no stress cracking corrosion. Material has good formability at medium strength and good thermal and electrical conductivity.
Main applications are connected with heat transfer in electro industry, electronics, automotive. Possible applications: heat exchangers, radiator fins, boiler pressure vessels, connectors. Literature: 
Rolled plates, sheets, strips and folis
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Chemical composition
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Value | Comments | |
| Cu [ wt.% ] | 99,7-99,955 | Calculated | |
| Sn [ wt.% ] | 0,04-0,15 | ||
| Te [ wt.% ] | 0,005-0,05 | ||
| 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 |
| 200-400 | No data | 2-30 | 50-140 Comments: HV | 118 | 44 | 0,34 |
Material's mechanical and electrical properties in different tempers
Temper | Ultimate Tensile Strength UTS, [MPa] | Hardness [HRF] | Hardness superficial 30-THR | Hardness[HV] | Elongaton at break during tensile test A[%] | Literature |
|---|---|---|---|---|---|---|
O 25 | 205-260 | max.65 | max. 31 | 50-70 | min.15 |
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M25 | 205-260 | max. 75 | max. 41 |
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1/8H | 220-275 | 54-82 | max 49 |
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1/4H | 235-295 | 60-84 | 18-51 | 65-85 | min.9 | |
1/2H | 255-315 | 77-89 | 43-57 |
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3/4H | 285-345 | 82-91 | 47-59 |
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H | 295-360 | 86-93 | 54-62 |
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EH | 325-385 | 88-95 | 56-64 | min.100 |
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Spring | 345-400 | 91-97 | 60-66 |
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extra spring | min 360 | min.92 | min.61 |
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Material's grain sizes for different tempers
Temper | Grain size [mm] | Hardness [HRF] | Literature |
|---|---|---|---|
O60 (soft anneal) | max 0,50 | max 65 |
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O68 (deep drawing anneal) | max 0,50 | 30-75 |
Levels of electrical and mechanical properties of material in different tempers
Ultimate tensile strength of material as a function of cold working strain calculated via formula based on approximation of different experimental data
Variation of electrical conductivity and hardness with annealing temperature of material (conductivity and hardness tests at ambient temperature after heating)
Half softening temperature about 350-400°C
Material resistant to hydrogen embrittlement
Type of corrosion | Suitability | Literature |
|---|---|---|
Atmospheric | no data | - |
Marine environment | no data | - |
Stress crack | Resistant |
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Hydrogen embrittlement | Resistant |
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Electrolytic | no data | - |
Other - oxidising acids | no data | - |
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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 | 430-530 | No data | No data | No data | No data | No data |
