Stick electrode
Stick electrode (used in manual metal arc / shielded metal arc welding) is a core wire in various sizes and thicknesses, over which the flux coating is coated.
Stick Welding
The stick welding process is usually defined as Manual Metal Arc Welding. In this method, stick electrodes are used to combine metals. Therefore, it is also called “stick welding”.
Stick Electrodes
For different metals, different grades of electrodes are manufactured according to their chemical composition such as: –
| Base material | P/Group No | Filler | ||
|
Preferred Electrode |
Alternate Electrode |
|||
| Carbon steel (A53 A106) | 1 | ER70S‐2,S‐3, S5, RG 60 , 65 |
E6010 Root E7018 |
E 6013,E7015 E7028 |
| Carbon steel(A333 Gr. 1/6) | 1 | ER 70S‐1B | E7018 G | E7018 |
| Low and Intermediate Alloy Steel |
3/A335 P1 | ER 70S‐1B | E7010‐A1 E7018‐1 |
E7015‐1 |
| 3/A335 P2 | — | E8018‐B1 | E8016‐B1 | |
| 4/A335 P11 | ER515 | E6016‐B2 | E8018‐B2 | |
| 4/A335 P12 | ||||
| 5/A335 P22 | ER90S‐B3 | E9016‐B3 | E9018‐B3 | |
| 5/A335 P5 | ER80S‐B6 | E8018‐B6 | — | |
| 5/A335 P7 | ER80S‐B8 | E8018‐B7 | — | |
| 5/A335 P9 | ER80S‐B8 | E8018‐B8 | — | |
| Stainless Steel | 6 | ER309 | E309 | E312 |
| ER410 | E410 | — | ||
| 7 | ER309 | E309 | Eni Cr Fe‐3 | |
| ER430 | E430 | Eni Cr Fe‐3 | ||
| 8/A312 TP304 | ER308 | E308 | — | |
| 8/A312 TP304L | ER308L | E308L | — | |
| 8/A312 TP304H | ER16‐8‐2 | E16‐6‐2 | E308 | |
| 8/A312 TP308 | ER309 | E309 | E310 | |
| 8/A312 TP310 | ER310 | E310 | — | |
| 8/A312 TP316 | ER316 | E316 | E16‐8‐2 | |
| 8/A312 TP316L | ER316L | E316L | E308 Mo L | |
| 8/A312 TP316H | E16‐8‐2 | E316 | ER16‐8‐2 | |
| 8/A312 TP317 | ER317 | E317 | — | |
| 8/A312 TP321 | ER347 | E347 | — | |
| 8/A312 TP321H | ER16‐8‐2 | E16‐6‐2 | E347 | |
| 8/A312 TP347 | Er347 | E347 | — | |
| 8/A312 TP347H | ER16‐8‐2 | E16‐8‐2 | E347 | |
| 8/A312 TP348 | ER348 | E347L To346 | E347 | |
| 8/A312 TP348H | ER16‐8‐2 | E16‐8‐2 | E347 | |
Full chart about material composition and codes with p number/Group number and electrodes may be downloaded here:
Stick Electrode coding |
 |
The coding of electrodes provides information about the strength, constituents of flux coating, nature of slag, current, polarity, weld position, etc.
As per AWS-ASTM, the coding of electrodes are as follows:
E XX XX Example E 60 10
E –> Electrode
XX–> The first two digits indicate the minimum tensile strength of weld metal in thousands of pounds per sq. Inch. such as 60*1000=60000 lbs./sq. Inch.
X–>Last but on digit indicates the welding position. It can be represented by numbers like 1,2, and 3 which indicates that welding can be performed in any position, flat and horizontal positions, and flat position respectively.
X–>The last digit tells about the power supply, type of cover, type of arc, penetration characteristics, etc, it maybe 0,1,2,3,5 or 6
