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Galvanized Steel Core Wire

Galvanized Steel Core Wire is used for Bare ACSR Conductor ,also named High Tensile Galvanized steel wire,can be supplied in single wire or stranded wires. The common structure is 1x7, 1x19 and 1x37.

Product Description

Product Description

Galvanized Steel Core Wire is used for Bare ACSR Conductor, also named High Tensile Galvanized steel wire, can be supplied in single wire or stranded wires. The common structure is 1x7, 1x19 and 1x37.

Physical Properties of Galvanized Steel Core Wire as per ASTM B 498

Wire Diamater (mm)Diamater Tolerance (mm)Weight of Zinc-coating (g/m2)Stress at 1% Extension, Min (Mpa)Tensile StrengthMin.(Mpa)Elongation in 250mm, Min (%)
1.57-1.90+0.04, -0.03210131014503.0
Over 1.9-2.3+0.04, -0.03220131014503.0
Over 2.3-2.7+0.05, -0.05230128014103.5
Over 2.7-3.1+0.05, -0.05240128014103.5
Over3.1-3.5+0.08, -0.05260124014104.0
Over 3.5-3.9+0.08, -0.05270124014104.0
Over 3.9-4.5+0.1, -0.08275117013804.0
Over 4.5-4.8+0.1, -0.08300117013804.0


Table 1. Initial Settings for Determining Stress 1% Extension
Nominal Wire DiameterInitial StressInitial setting of extensometer for a gauge length of 250mm2
mmN/mm2
1.242.251000.125
2.2532000.25
34.753000.375
4.755.54000.5
For other gauge lengths, multiply the initial setting by the gauge length in mm divided by 250
Table 2. Zinc Coating Requirements
Nominal Wire DiameterClass AClass BClass CClass DClass E
mmMin. mass of Zn g / m2Min. no. of one minute dipsMin. mass of Zn g / m2Min. no. of one minute dipsMin. mass of Zn g / m2Min. no. of one minute dipsMin. mass of Zn g / m2Min. no. of one minute dipsMin. mass of Zn g / m2Min. no. of one minute dips
OverUp to and incl.
1.241.518523703.5150136531852
1.51.7520024003.51601.54603.52002
1.7522152.54304175255042152.5
22.252152.54304175255042503.5
2.252.75230346041902.564052503.5
2.753230346041902.564052503.5
33.52453.54904205373062503.5
3.54.252603.552042603.573062603.5
4.254.7527545504275477562754
4.75520045805290482562904


Table 3. Mechanical Properties of ST1A Wires
Nominal wire diameterDiameter toleranceStress at 1% extensionTensile strengthElongation on 250mmMandrel diameter for wrapping testNo. of torsion twists
mmmmMpa (N / mm2)Mpa (N/mm2)---
overUp to and incl.
1.241.5±0.03117014003118
1.51.75±0.03117014003118
1.752.25±0.03117014003118
2.252.75±0.04114013503116
2.753±0.05114013503.5116
33.5±0.05110013003.5114
3.54.25±0.06110013004112
4.254.75±0.06110013004112
4.755.5±0.07110013004112

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