scope:
This specification covers austenitic-steel arc welding electrodes for
use on steels of high hardenability (see 6.1).
The electrodes shall be furnished in the types, classes, and sizes
shown in tables IA and IB as specified.
TABLE IA. Types of Electrodes
Type 1/, 2/, 3/ Description
------------------------------------------------------------
MIL-307L-15 Lime covering DC, Electrode Positive.
MIL-307L-16 Lime covering AC-DC.
MIL-307T-15 Titania covering DC, Electrode Positive.
MIL-307T-16 Titania covering AC-DC.
MIL-308MoL-15 Lime covering DC, Electrode Positive.
MIL-308MoL-16 Lime covering AC-DC.
MIL-308MoT-15 Titania covering DC, Electrode Positive.
MIL-308MoT-16 Titania covering AC-DC.
1/ Electrodes designated-16 (qualified for use on both-AC and DC) shall
be considered as meeting all the requirements for electrodes
designated-15 (DC only) of the same composition and covering. For DC
welding applications-15 and -16 electrodes of the same composition
and covering are interchangeable.
2/ "L" types have lime coverings which contain less than 9 percent
TiO2 and consist chiefly of alkaline-earth elements and their
components.
3/ "T" types have titania coverings which contain more than 20 percent
TiO2.
Beneficial comments (recommendations, additions, deletions) and any
pertinent data which may be of use in improving this document should be
addressed to: Director, US Army Materials and Mechanics Research
Center, ATTN: DRXMR-SMS, Watertown, MA 02172 by using the
self-addressed Standardization Document Improvement Proposal (DD Form
1426) appearing at the end of this document or by letter.
TABLE IB. Classes and sizes with welding positions
Class Diameter: in.(mm) length: in.(mm) Welding positions
--------------------------------------------------------------------------
1 ⅛, 5/32 14 (356) All (overhead, vertical,
(3.2, 4.0) horizontal and flat).
2 3/16 (4.8) 14 or 18 Horizonal fillets and flat.
(356 or 457)
2 7/32, ¼ 18 (457) Horizontal fillets and flat.
(5.56, 6.4)
3 5/16, ⅜ 18 or 24 Flat.
(8.0, 9.5) (457 or 610)
intended Use:
This specification covers austenitic welding electrodes for the welding
of steels of high hardenability such as those used for armor.
(Chromium-nickel electrodes for the welding of corrosion-... View More
This specification covers austenitic welding electrodes for the welding
of steels of high hardenability such as those used for armor.
(Chromium-nickel electrodes for the welding of corrosion- and
heat-resisting steels are covered by MIL-E-22200/2.) The-MIL-307 and
MIL-308 types of electrodes are commonly designated as 19-9 Mn and 19-9
Mo, respectively.
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