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Stick electrode:codes, classification, and definition

 

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 materialP/Group NoFiller 
 

Preferred

Electrode

Alternate 

Electrode

Carbon steel (A53 A106)1ER70S‐2,S‐3, S5,
RG 60 , 65
E6010 Root
E7018
E 6013,E7015
E7028
Carbon steel(A333 Gr. 1/6)1ER 70S‐1BE7018 GE7018
Low and Intermediate
Alloy Steel
3/A335 P1ER 70S‐1BE7010‐A1
E7018‐1
E7015‐1
3/A335 P2        —E8018‐B1E8016‐B1
4/A335 P11ER515E6016‐B2E8018‐B2
4/A335 P12
5/A335 P22ER90S‐B3E9016‐B3E9018‐B3
5/A335 P5ER80S‐B6E8018‐B6  —
5/A335 P7ER80S‐B8E8018‐B7    —
5/A335 P9ER80S‐B8E8018‐B8   —
Stainless Steel6ER309E309E312
ER410E410  —
7ER309E309Eni Cr Fe‐3
ER430E430Eni Cr Fe‐3
8/A312 TP304ER308E308   —
8/A312 TP304LER308LE308L  —
8/A312 TP304HER16‐8‐2E16‐6‐2E308
8/A312 TP308ER309E309E310
8/A312 TP310ER310E310  —
8/A312 TP316ER316E316E16‐8‐2
8/A312 TP316LER316LE316LE308 Mo L
8/A312 TP316HE16‐8‐2E316ER16‐8‐2
8/A312 TP317ER317E317  —
8/A312 TP321ER347E347 —
8/A312 TP321HER16‐8‐2E16‐6‐2E347
8/A312 TP347Er347E347  —
8/A312 TP347HER16‐8‐2E16‐8‐2E347
8/A312 TP348ER348E347L To346E347
8/A312 TP348HER16‐8‐2E16‐8‐2E347

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

 

 

 

 

Table of the last digit of the electrode as per the American system

Down load full chart