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|  MIL-E-22200G
Percentage of mean
dimension
Electrode size (inch)
3/32 and smaller
7
1/8 and 5/32
5
4
3/16 and larger
3.5.3 Uniformity.
Core wire and coverings shall be free of defects which
would interfere with uniform performance of the electrodes.
3.5.4 Dielectric strength. The coverings of electrodes at room temperature
and in the dry condition, that is, as removed from freshly opened containers,
shall have a dielectric strength that shall insulate against a difference
potential of 110 volts (V), 60 hertz (Hz), alternating current (at). Any
permissible exception to this requirement shall be as specified (see 3.1).
3.5.5 Flaking and cracking of covering. The sum of the surface area of the
core wire exposed by flaking and cracking of the covering shall not exceed that
permitted for arc ends specified in 3.5.9.1 (see 4.6.4).
3.5.6 Fumes. Covering constituents which, as welding fumes, are poten-
tially harmful to personnel, shall be minimized,
3.5.7 Slag removal. The slags deposited by the coverings shall be remov-
able with hand tools (not air or power operated) from the weld deposits. Grinding
during test plate preparation shall not be used for slag removal and shall be
limited to that specified in 3.9.
3.5.8 Stability. The stability of the coverings shall be such that elec-
trodes after receipt from the manufacturer will comply with this specification
after storage in original unopened containers under roof and on dry platforms for
the following periods (see 6.5):
Type of unit container
Time Period
Class 5 of MIL-W-1043O
Up to 6 months
Classes 1 and 2 of MIL-W-1043O
Up to 1 year
3.5.9 Extent of coverings.
3.5.9.1 Arc ends. The arc end of each electrode shall be sufficiently bare
and the covering tapered a minimum amount to permit striking of the electrode.
The core wire shall not protrude more than 1/32 inch beyond the covering at the
arc end. Chipping of the covering at the arc end may accidentally occur, but
when it does occur such chipping shall not exceed one-quarter the circumference
of the core wire and one-quarter of the circumference of the core wire transverse
to the arc end.
3.5.9.2 Grip ends. The grip portion of the electrode for making contact
with the electrode holder shall be as follows:
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