MIL-DTL-46100E (MR)
4.6.2.3 For Charpy V-notch impact tests. A sample shall be taken from a plate representing
each lot for Charpy V-notch impact tests. The sample shall be the same thickness as the
plate it represents and large enough to obtain at least six specimens from the sample in
accordance with 4.8.3.
4.6.2.4 For ballistic acceptance testing. One (1) plate, of each thickness to be supplied on
the contract, shall be randomly taken from each lot for ballistic testing. In the event that
plates of the same heat rolled to the same nominal thickness but with overlapping thickness
tolerance ranges can be represented by one ballistic test plate, then only one of the ordered
thicknesses need be submitted for acceptance testing. The other ordered thickness,
however, shall be included on the applicable reporting form with the words indicating that
it is represented by the sample to be tested. However, if the two ordered thicknesses are
such that each thickness requires testing with a different type projectile as shown in Table
IV, then each of the ordered thicknesses shall be ballistically tested. Unless otherwise
specified in the contract or purchase order (see 6.2), the plates shall be 12 inches by 36
inches. Test projectiles shall be as specified in Table V.
4.6.2.5 Bend test samples. Unless otherwise specified in the contract or purchase order (see
6.2), two (2) samples shall be randomly taken from each lot for these tests representing the
entire lot of material; however, when an entire heat represents only one lot the samples
shall be taken from the first and last usable portion of the heat. Testing shall be conducted
in accordance with 4.8.4 and shall meet the requirements of 3.2.6.
4.7 Examination.
4.7.1 Visual. All steel plate shall be subject to visual inspection for compliance with the
requirements for identification marking (see 3.2.9) and for workmanship (see 3.2.10).
4.7.2 Dimensional. All steel plate shall be subject to inspection for compliance with
dimensional and tolerance requirements (see 3.2.8).
4.7.3 Preparation for shipment. Examination shall be made to determine compliance with
the requirements for preparation for shipment (see section 5).
4.8 Tests.
4.8.1 Chemical analysis. Chemical analysis shall be conducted in accordance with the
applicable method specified in ASTM A751 (see 6.5). The analysis shall comply with the
declared composition established in accordance with the requirements of Table I (see
3.2.1).
4.8.2 Hardness tests. Brinell hardness tests (HB) shall be conducted in accordance with
ASTM E10 or ASTM E110 (for portable testing), using a 10 mm carbide ball and a 3000
kilogram load. Surface scale and decarburization shall be removed from the areas where
the tests are to be made. However, no more that 0.060 inches shall be removed from the
test area.
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