MIL-DTL-46192C(MR)
4.5.2.2 Mechanical properties. From each lot samples for tensile tests shall be
selected in accordance with table IV. Each sample shall be selected from a
different plate in the lot. If a lot consists of only one plate, only one
tensile test sample shall be taken. One tensile specimen shall be fabricated
from each sample.
4.5.2.3 Stress corrosion. One plate, approximately 12 inches by 12 inches by
the ordered thickness shall be selected from the lot for stress corrosion tests.
At the discretion of the procuring activity, reduced sampling may be instituted,
i.e., not every lot need be sampled (see 4.9.2.3.2).
TABLE IV. Number of tensile test samples.
__________________________________________
Minimum number
Lot size, pounds
of samples
To 8,000, incl.
2
8,001-12,000, incl.
3
12,001-20,000, incl
4
Over 20,000, incl.
5____
4.5.2.4 Ballistic testing. One plate approximately 12 inches by 36 inches by
the ordered thickness shall be selected from the lot for ballistic testing. The
orientation of this plate with respect to the rolling direction shall be at the
option of the manufacturer.
4.6
Test specimens.
4.6.1 Chemical analysis. Specimens for chemical analysis shall be prepared in
accordance with the applicable method specified in 4.7.1.
4.6.2 Mechanical properties. Tension test specimens shall conform to the
dimensions of the round 0.50 inch diameter or proportional subsized standard
specimens of ASTM B557. They shall be taken in the long transverse direction.
From plate in nominal thickness 0.50 to 1.50 inches inclusive, tensile test
specimens shall be taken with the axis midway between the two plate surfaces;
from plate in nominal thicknesses greater than 1.50 inches, the axis of the
tensile test specimen shall be three-fourths of the distance from one surface to
the other.
4.6.3 Stress corrosion. The stress corrosion specimens shall be stressed at
75% of the specified yield strength. The location of the specimens taken from
the plate shall be specified in the drawing (see 6.2).
4.7
Test procedures.
4.7.1 Chemical composition. The determination of the chemical composition
shall be made in accordance with one or more of the following test methods:
ASTM E34, E716, E227, E607, and E1251.
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