RWMA Class12
Tuncop is a copper alloy with tungsten.
Produced by powder metallurgy, this is a copper alloy containing 70% tungsten.
Tungsten has high resistance against arcs generated during welding.
The high electrical conductivity of copper allows it to be used as electrode.
Butt welding and spot welding of stainless steels; as an electrode
with high resistance to abrasion during sinking erosion operations.
Tungsten |
Copper |
W |
Cu |
80 |
20 |
75 |
25 |
70 |
30 |
Hardness |
230 – 200 – 170 |
HV |
Tensile Strength |
490 – 440 – 390 |
N/mm2 |
Moduls of Elasticity (20°C) |
230 – 225 – 225 |
kN/mm2 |
Electrical Conductivity |
17 – 19 – 20 |
%mohmm2 |
Ohmage |
0,06 – 0,053 – 0,05 |
ohmmm2/m |
Thermal Conductivity (20°C) |
130 – 140 – 150 |
W/mK |
Density |
15,3 – 14,6 – 14,00 |
g/cm3 |
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