MIL-DTL-12560K (MR)
c) Translate NDT codes, standards, specifications and procedures into NDT instructions
adapted to the actual working conditions,
d) Set up and verify equipment settings,
e) Perform and supervise tests,
f) Interpret and evaluate results according to applicable codes, standards, specifications or
procedures,
g) Prepare NDT instructions,
h) Carry out and supervise all tasks at or below Level II,
i) Provide guidance for personnel at or below Level II, and
j) Report the results of non-destructive tests.
6.4 Chemical analysis. Suggested ASTM instrumental methods that can be used for chemical
analysis are E322 and E415. ASTM A751 should be consulted for a complete list of methods.
6.4.1 Changes in composition. Changes in composition may not necessarily be cause for
retesting but should be subject to review by the procuring activity to determine whether
additional first article testing is required.
6.4.2 Changes from prior chemical analysis requirements. The compositions of elements
antimony, arsenic, lead, or zirconium are not required in the chemical composition report.
6.5 Special first article ballistic test. Special first article ballistic tests are required when the
manufacturer changes either the melting procedure or heat treatment or the declared chemistry of
the armor.
6.6 Production plates. Material made to this specification has a tendency to develop stress
cracks if not tempered as soon as possible after austenitizing treatment. To avoid this situation
all plates should be left in the hot rolled or tempered condition while waiting for the ballistic test
results.
6.7 Potential suppliers. Potential suppliers who have not previously supplied armor plate to MIL-
DTL-12560 and wish to have their material ballistic tested may do so at their own expense. It is
recommended that inquiries for such testing be directed to Commander, USA ATC, ATTN:
TEDT-AT-SL-V, Building 358, 400 Colleran Road, APG, MD 21005-5059. The armor
manufacturing process should be inspected by a cognizant government representative to ensure
compliance with the details of this specification.
6.8 New contracts sponsored by Government agencies. At the time that a new contract is
initiated for the production of combat vehicles, the contractor's supplier is to estimate the
number, size and delivery schedule of the ballistic test plates which are to be submitted for first
article or acceptance testing. A lead time of 60 days after the contract has been signed is to be
allowed prior to shipment of the first ballistic test plate(s) to APG to insure that all administrative
functions for the establishment of a new ATC project have been completed in preparation for the
test. The contracting government agency is to initiate the new project through a letter to
Commander, USA ATC, ATTN: TEDT-AT-SL-V, Building 358, 400 Colleran Road, APG, MD
21005-5059 requesting a cost estimate for the ballistic testing of the applicable number of sizes
of plates. In the case of increases in scope of existing projects, similar correspondence is needed.
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