Machinery's Handbook, 31st Edition
1594
Shielded Metal Arc Welding Table 13. Current Ranges for AWS E60XX SMAW Electrodes
Electrode Diameter
E6010/E6011
E6012 (amps) 25–50 40–100 85–140 115–185 145–240 250–390 290–480
E6013 (amps) 20–40 50–100 75–135 110–185 150–235 240–340 310–425
E6027 (amps)
in.
(mm) (1.6) (2.5) (3.2)
(amps)
…
… …
1 ∕ 3 ∕
16 32
40–75
75–130 90–170 135–220 205–325
120–180 155–245 200–300 300–410
1 ∕
8
(4) (5)
5 ∕ 3 ∕
32 16
(6.4)
1 ∕
4
5 ∕ 370–480 AWS E70XX Electrodes.— Information on the most commonly used AWS E70XX elec trodes is given in Table 15. For critical welding applications, low-hydrogen electrodes are typically used. It is most important that manufacturers’ instructions regarding storage requirements for keeping low-hydrogen electrodes free from moisture are followed. Cur rent ranges for welding low-carbon steel sheet metal with E70XX electrodes of diameters from 3 ∕ 32 to 3 ∕ 16 in. (2.5 to 5 mm) are shown in Table 14. The optimum starting point is in the middle of the current range indicated. Table 14. Current Ranges for SMAW E70XX Welding Electrodes Electrode Diameter E7014 E7018 E7024 in. (mm) (amps) (amps) (amps) 3 ∕ 32 (2.5) 75–120 70–105 85–135 1 ∕ 8 (3.2) 110–155 110–160 130–180 5 ∕ 32 (4) 145–210 150–215 175–240 3 ∕ 16 (5) 190–280 180–275 230–315 7 ∕ 32 (5.5) 255–335 255–350 280–370 1 ∕ 4 (6.4) 330–415 295–360 325–450 5 ∕ 16 (8) 380–490 370–480 390–530 In using AWS E7018 electrodes for vertical up welding of plate thicknesses of 3 ∕ 16 to 5 ∕ 16 in. (5 to 8 mm), try a 1 ∕ 8 -in. (3.2-mm) diameter electrode. For vertical up welding of thicknesses greater than 5 ∕ 16 in. (8 mm), try a 5 ∕ 32 -in. (4-mm) electrode. With AWS E7018 electrodes, to make horizontal fillet welds in plate thicknesses of 10 swg (0.135 in., 3.4 mm), try a 3 ∕ 16 -in. (5-mm) electrode, for 1 ∕ 4 -in. (6.4-mm) plate, try the 7 ∕ 32 -in. (5.5-mm) electrode, and for steel plate thicker than 1 ∕ 4 in., try the 1 ∕ 4 -in. (6.4-mm) diameter electrode. Table 15. Characteristics of AWS Electrodes for SMAW Welding Standard Description 16 (8) 260–420
AWS E7014 CSA E48014 BS E5121RR11011 DIN E5121RR8 JIS D4313
An iron-powder, all-position electrode for shallow penetration. Excellent for vertical down and applications with poor fit. Similar to AWS E6012-E6013 with added iron powder. For welding mild and low-alloy steels. Polarity AC or DC, + or − .
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