EN 50189 Standard

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Table 1. Initial Settings for Determining Stress 1% Extension
Nominal Wire Diameter, mm Initial Stress, N/mm2 Initial setting of extensometer for a gauge length of 250mm2
1.24 2.25 100 0.125
2.25 3 200 0.25
3 4.75 300 0.375
4.75 5.5 400 0.5
For other gauge lengths, multiply the initial setting by the gauge length in mm divided by 250.
Table 2. Zinc Coating Requirements
Nominal Wire Diameter, mm Class A Class B Class C Class D Class E
Over Up to and incl. Min. mass of Zn g/m2 Min. no. of one minute dips Min. mass of Zn g/m2 Min. no. of one minute dips Min. mass of Zn g/m2 Min. no. of one minute dips Min. mass of Zn g/m2 Min. no. of one minute dips Min. mass of Zn g/m2 Min. no. of one minute dips
1.24 1.5 185 2 370 3.5 150 1 365 3 185 2
1.5 1.75 200 2 400 3.5 160 1.5 460 3.5 200 2
1.75 2 215 2.5 430 4 175 2 550 4 215 2.5
2 2.25 215 2.5 430 4 175 2 550 4 250 3.5
2.25 2.75 230 3 460 4 190 2.5 640 5 250 3.5
2.75 3 230 3 460 4 190 2.5 640 5 250 3.5
3 3.5 245 3.5 490 4 205 3 730 6 250 3.5
3.5 4.25 260 3.5 520 4 260 3.5 730 6 260 3.5
4.25 4.75 275 4 550 4 275 4 775 6 275 4
4.75 5 200 4 580 5 290 4 825 6 290 4
5 5.25 290 4 580 5 290 4 825 6 290 4
5.25 5.5 290 4 580 5 290 4 825 6 290 4
Table 3. Mechanical Properties of ST1A Wires
Nominal wire diameter mm Diameter tolerance Stress at 1% extension, MPa Tensile strength, MPa Elongation on 250mm Mandrel diameter for wrapping test No. of torsion twists
Over Up to and incl. mm N/MM2 N/MM2 %
Min. Min. Min. xd Min.
1.24 1.5 ±0.03 1170 1400 3 1 18
1.5 1.75 ±0.03 1170 1400 3 1 18
1.75 2.25 ±0.03 1170 1400 3 1 18
2.25 2.75 ±0.04 1140 1350 3 1 16
2.75 3 ±0.05 1140 1350 3.5 1 16
3 3.5 ±0.05 1100 1300 3.5 1 14
3.5 4.25 ±0.06 1100 1300 4 1 12
4.25 4.75 ±0.06 1100 1300 4 1 12
4.75 5.5 ±0.07 1100 1300 4 1 12
Table 4. Mechanical properties of ST2B Wires
Nominal wire diameter mm Diameter tolerance Stress at 1% extension, MPa Tensile strength, MPa Elongation on 250mm Mandrel diameter for wrapping test
Over Up to and incl. mm N/MM2 N/MM2
1.24 1.5 ±0.05 1100 1300 4 1
1.5 1.75 ±0.05 1100 1300 4 1
1.75 2.25 ±0.05 1100 1300 4 1
2.25 2.75 ±0.06 1070 1250 4 1
2.75 3 ±0.06 1070 1250 4 1
3 3.5 ±0.07 1000 1200 4 1
3.5 4.25 ±0.09 1000 1200 4 1
4.25 4.75 ±0.10 1000 1200 4 1
4.75 5.5 ±0.11 1000 1200 4 1
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