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ELECTRODE CLASSIFICATION


Welding Data >> ELECTRODE CLASSIFICATION

ELECTRODE CLASSIFICATION

  • The preffix "E" designates arc welding elsctrodes.
  • The first two digits of 4 digit Nos. and first 3 digits of 5 digit Nos. indicate minium Tensile strength.
E- 60xx indicates minimum tensile strength 60,000 p.s.i.
E- 70xx indicates minimum tensile strength 70,000 p.s.i.
E- 80xx indicates minimum tensile strength 80,000 p.s.i.
E- 90xx indicates minimum tensile strength 90,000 p.s.i.
E- 100xx indicates minimum tensile strength 1,00,000 p.s.i.
E- 110xx indicates minimum tensile strength 1,10,000 p.s.i.
  • Second last digit indicates the welding position.
  1. All positions
  2. Flat position and horizontal fillets.
  • The last two digits together indicate the welding position giving coating type, current & polarity.
10.
Suitable for all welding positions. Coating contains much cellulose. Fierce arc giving deep penetration. Thin, brittle slag. Can be used with DC(+) only.
11.
Similar type but specially for use on Ac. Can also be used with DC(+) but at the expense of good weldability.
12.
Suitable for all welding positions but in practice used mainly in flat and horixontal position. Coating contains large amount of titanium oxide. Can be used with AC and DC(-).
13.
Similar type giving satisfactory operation at lower OCV. Suitable for all welding positions. Can be used with AC and DC(-).
14.
Similar type with increased efficiency. Coating contains iron powder. Can be used with AC, DC(+) and DC(-)
15.
Suitable for all welding positions. Basic coating. Can be used with DC(+) only.
16.
Similar type but can be used with AC and DC(+).
18.
Similar type but can be used with AC and DC(+)
20.
Suitable for use in flat position and for standing fillets. Coating contains large amount of iron oxide. Acid type, Brittle, porous slag deraches easily. Can be used with AC, DC(+) and DC(-)
24.
Suitable for use in flat position and for standing fillets. Rutile type with higher efficiency (more iron powder) than type Exx 14. Can be used with AC and DC(+).
27.
Suitable for use in flat position and for standing fillets.Acid type
contact electrode.can be used with AC and DC(-)
28.
Suitable for use in flat position and for standing fillets.Efficiency
higher than for type EXX 18. Can be used with AC and DC (+)
  • The (EXXXX-'') indicates the approximate alloy in the weld deposits.

A1-0.5%Mo
B1 -0.5%Cr 0.5%Mo
B2 -1.25%Cr 0.5%Mo
B3 -2.25%Cr 1%Mo
B4 -2%Cr 0.5Mo
B5 -0.5%Cr 1%Mo
C1 -2.5%Ni
C2 -3.5%Ni
C3 -1%Ni 0.35Mo 0.15%Cr
D1, D2-0.25 - 0.45%Mo, 1.75%Mn
G -1%minMn, 0.5%minNi, 0.3%minCr, 0.2%minMo, 0.1%minV


 
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