Aluminum-Clad Steel Wire is used in products that require high corrosion resistance, such as CRGW (corrosion resistant ground wire) OPGW (optical ground wire) and others.
Cladding – is the method of applying a thin protective layer of aluminum on the surface of the steel wire, when due to a large compressive force occurs cold metal weld. The main feature of this method is the interdiffusion of molecules of two metals without heating to a depth of 5 microns. Diffusion occurs at high pressure inside a chamber where extruding aluminum is fed plastic heated to a temperature of 400C. Aluminum is heated only by the friction and the characteristic deformation.
Subsequently, the resulting product is subjected to sizing or drawn with the total reduction up to 95%. Steels, during drawing, acquires mechanical strength up to 1400 MPa in the finished product.
"Saranskkabel-Optika", Ltd produces Aluminum-Clad steel wire of following diameters: 2,1 mm; 2,2 mm; 2,25 mm; 2,3 mm; 2,6 mm; 2,7 mm; 2,8 mm; 2,9 mm; 3,0 mm: 3,1 mm; 3,25 mm; 3,3 mm; 3,8 mm; 4,0 mm; 4,1 mm.
|Wire mark||Operational requirements|
|20 SA||Minimum tensile strength||1070 MPa|
|Minimum voltage at 1% elongation||1000 MPa|
|Minimum thickness of aluminum||from 8%|
|Resistivity, not much than||0,08480 Om mm2|