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Welding
Data
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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.
- All positions
- 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.
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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
Welding
Data
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