Alumoweld

  • Corrosion resistance
  • High Conductivity
  • High ratio resistance weight
  • Fulfills the requirements of standards:
    • IEC-1232
    • EN-61.232 y
    • ASTM-B-415
NOMINAL DIAMETER TENSILE STRENGTH (MPA) MINIMUM STRESS AT 1% EXTENSION (MPA) MINIMUM ELONGATION ON 250 MM TORSION TEST MIN. TWISTS
20 SA 1.24 – 5.50 mm 1340 – 1070 1200 – 1100  1.5% 20
27 SA 2.50- 5.00 mm 1080 800  1.5%  20
30 SA 2.50- 5.00 mm 880 650 1.5% 20
40 SA 2.50- 5.00 mm 680 500 1.5% 20

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Product Description

NOMINAL DIAMETER TENSILE STRENGTH (MPA) MINIMUM STRESS AT 1% EXTENSION (MPA) MINIMUM ELONGATION ON 250 MM TORSION TEST MIN. TWISTS
20 SA 1.24 – 5.50 mm 1340 – 1070 1200 – 1100  1.5% 20
27 SA 2.50- 5.00 mm 1080 800  1.5%  20
30 SA 2.50- 5.00 mm 880 650 1.5% 20
40 SA 2.50- 5.00 mm 680 500 1.5% 20

The covered aluminum steel wire for compression, internationally known as Alumoweld or ACS, is a wire of high resistance whose cover is carried through an extrusion process, that adheres the aluminum by pressure and heat.

Once the covering process is finished, the wire is drawn until its final diameter without any alteration in the aluminum steel ratio.

Its’s main properties are:

  • CORROSION RESISTANCE

Due to the important thickness of present aluminum in the wire (minimum 10% of its radius), the ACS provides an excellent corrosion resistance, being equivalent to EC grade aluminium.

Also the use of ACS combined with aluminium wires in ACSR conductors allows to prevent the galvanic corrosion that can occur when placing in contact different metals.

  • HIGH CONDUCTIVITY

If compared to copper, the ACS presents a conductivity of 14%,20%, 27%, 30% or 40%, in accordance with the layer of aluminium which uses (5%,10%, 14%, 15%, 25% of the radius).

If compared to the galvanized steel, its conductivity is three times bigger.

For high frequency application, where the “skin effect” is an important factor (for example, lighting faults) the conductivity of the ACS is approaches 100% of aluminium because the highest electrical current density is concentrated in the external part of the conductor.

  • HIGH RATIO RESISTANCE WEIGHT

Among its different wires used in the electric lines, the ACS offer the best ratio resistance-weight between all. Its tensile strength is 8 times bigger than the aluminium wires of same diameter and little more than the double relating to the weight.

If compared to the galvanized steel wire of same diameter and same mechanical characteristics, the weight of the ACS is 15% less, and maintains its mechanical characteristics through the time due to the excellent protection offered by the aluminum layer.