MIL-DTL-13080E
4.6.4.4 Welding procedures and conditions.
4.6.4.4.1 Layering of welds. Deposit welds in layers as shown on figure 3.
4.6.4.4.1.1 For checking physical properties of welds. Deposit the welds with the number of
layers specified below, and in such a manner that the final layer is a reinforcement of standard
proportions.
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Electrode size: in. (mm)
Number of layers
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5/32 (4.0)
9 or 10
3/16 (4.8
9 or 10
7/32 (5.6
8 or 9
1/4 (6.4)
8 or 9
5/16 (8.0)
8 or 9 *
3/8 (9.5)
7 or 8 *
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* See 4.6.4.5.2
4.6.4.4.2 Width of pass. Deposit the weld, except for the two root layers, using the 2-1/2
diameter (split weave) build-up sequence shown on figure 3.
4.6.4.4.3 Crater cracks. If cracks in any root pass extend beyond to craters into the deposited
metal or if there are cracks longer than 1/2 in. (12.7 mm) in any succeeding pass or weld metal,
discontinue tests of the electrode involved. Report any cracking encountered in an electrode.
4.6.4.4.4 Plate temperature. Do not start the initial root pass on any groove weld until the
temperature of the test plate is between 60°F and 86°F (16°C and 30°C). When starting the
deposition of additional passes, the plate temperature in the immediate vicinity of the weld shall not
exceed 225°F (107°C).
4.6.4.5 Preparation of test joints.
4.6.4.5.1 For 5/32 in. (4.0 mm) electrodes. Weld one joint on rolled, homogeneous armor plate in
the vertical position for checking physical properties. The procuring activity shall specify the
necessary details (see 6.2).
4.6.4.5.2 For 3/16, 7/32, 1/4, 5/16, and 3/8 in. (4.8, 5.6, 6.4, 8.0, and 9.5 mm) electrodes. Weld
one joint in the flat position on rolled, homogeneous armor plate, for checking physical properties, as
specified by the procuring activity. In addition, prepare welds for tests of 5/16 and 3/8 in. (8.0 and
9.5 mm) electrodes by depositing the three layers immediately above the root layer with 3/16 in.
(4.76 mm) electrodes, then complete the weld with 5/16 or 3/8 in. (8.0 or 9.5 mm) electrodes. Use
electrodes of 5/32 in. (4.0 mm) diameter for depositing root passes and also for passes A and B as
shown on figure 3 for each size of electrode being tested.
4.6.4.6 Post welding treatment of welds.
4.6.4.6.1 Peening. Peening of welds shall not be permitted.
4.6.4.6.2 Chipping of crater cracks. Chipping of crater cracks shall be permitted only in the root
passes.
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