Weld Condition for Mild Steel Sheets

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Weld Condition for Mild Steel Sheets Electrode


Material Thickness  Electrode Min. Weld Spacing Min.Overlap Class A (Best Condition)
Time Electrode Force  Weld Current  Diameter or Fused Zone  Tension Shear Strength
mm mm mm kgf A mm kgf
0.25 3.20 10   6 10 4 90 4000 3.30 105
0.40 3.20 10   6 10 5 115 5200 4.00 180
0.50 3.50 10   9 11 6 135 6000 4.30 240
0.60 4.00 10   10 11 7 150 6600 4.70 300
0.80 4.50 13   12 11 8 190 7800 5.30 440
1.00 5.00 13   18 12 10 225 8800 5.80 610
1.20 5.50 13   20 14 12 270 9800 6.20 780
1.40 6.00 13   23 15 14 305 10600 6.60 930
1.60 6.30 13   27 16 16 360 11500 6.90 1060
1.80 6.70 16   31 17 18 410 12500 7.40 1300
2.00 7.00 16   35 18 20 470 13300 7.90 1450
2.40 7.80 16   40 20 24 580 15000 8.60 1850
2,80 8.50 16   45 21 28 700 16200 9.40 2380
3.20 9.00 16 75 50 22 30 820 17500 10.2 3130
3.60 10.3 22 100 57 29 41 930 18200 11.2 3880
4.00 11.1 22 100 67 32 50 1030 18900 11.9 4450
4.30 11.1 22 100 76 38 61 1120 19600 12.9 5250
4.70 11.9 22 100 83 41 73 1260 20200 13.7 6000
5.10 12.7 22 100 89 45 84 1320 20900 14.7 6690
5.50 13.5 22 150 98 48 95 1460 21800 15.5 7300
5.90 13.5 22 150 108 54 106 1560 22300 16.5 7980
6.40 15.1 25 150 114 57 116 1710 23000 17.3 8570
6.60 15.1 25 250 121 60 127 1850 23600 18.0 9200
7.00 15.1 25 250 133 67 140 1960 24400 19.1 9850
7.90 15.9 25 250 146 73 162 2200 25700 20.2 10900

 

Material Thickness

 
 Class B (Medium Condition) Class C (Ordinary Condition)
 Time  Electrode Pressure Weld Current Diameter of Fused Zone Tension Shear Strength  Time  Electrode Force Weld Current  Diameter of Fused Zone Tension Shear Strength
mm kgf A mm kgf kgf A mm kgf
0.25 5 60 3700 3.00 90 15 30 3000 2.80 70
0.40 8 75 4500 3,60 160 20 40 3500 3.30 125
0.50 10 90 5000 4.00 210 24 45 4000 3.60 175
0.60 12 100 5500 4.30 280 26 50 4300 4.00 225
0.80 15 125 6500 4.80 400 30 60 5000 4.60 355
1.00 20 150 7200 5.40 540 36 75 5600 5.30 530
1.20 23 175 7800 5.80 680 40 85 6100 5.50 650
1.40 26 210 8500 6.30 850 46 100 6600 5.90 780
1.60 30 240 9100 6.70 1000 50 115 7000 6.30 920
1.80 33 275 9700 7.10 1180 54 130 7500 6.70 1100
2.00 36 300 10300 7.60 1370 58 150 8000 7.10 1305
2.40 44 370 11300 8.40 1770 65 180 8600 7.90 1665
2.80 52 430 12100 9.20 2300 72 220 9400 8.90 2180
3.20 60 520 12900 9.90 2940 78 260 10000 9.40 2790
3.60 72 560 13600 10.7 3600 102 280 10500 10.2 3380
4.00 88 640 14100 11.4 4200 125 320 11000 10.7 3900
4.30 107 720 14700 12.2 4780 152 360 11400 11.4 4420
4.70 128 800 15300 12.9 5460 182 400 11750 11.9 5030
5.10 147 880 15900 13.7 6080 210 440 12200 12.7 5600
5.50 166 970 16450 14.5 6680 237 490 12500 13.2 6120
5.90 186 1040 17000 15.2 7350 265 520 12900 14.0 6700
6.40 204 1140 17600 16.0 7940 290 570 13200 14.5 7240
6.60 222 1230 18100 16.8 8500 318 620 13600 15.0 7780
7.00 245 1300 18700 17.5 9250 350 660 14000 15.7 8370
7.90 284 1480 19800 18.8 10400 405 740 14800 17.0 9440

 

Table Deviation Rate of Tension Shear Strength

 Material Thickness   Class A   Class B   Class C 
3.2mm ±14% ±17% ±20%
3.6mm ±15% ±15% ±17%

 

Welding Case


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