MIL-DTL-25995D
4.5.5 First article samples. If requested by the contracting officer the manufacturer shall supply test
ingots and/or sample pipes. The quantity and the pipe lengths for the samples shall be specified on the
contract or purchase order. The samples shall be representative of the construction, workmanship,
components, and materials to be used during production. When a manufacturer is in continuous
production of pipes from one contract to another, submission of additional first article samples for a new
contract may be waived at the discretion of the acquiring activity (see 6.2). The following details shall
apply:
a. Heat treatment. Samples for heat treatment an inspection lot shall consist of an identifiable
quantity of material of the same mill form, alloy, temper, and nominal dimensions traceable to a
heat-treat lot or lots, and subjected to inspection at one time.
b. Chemical composition. The pipe shall conform to the chemical composition limits prescribed in
taken at the time the ingots are poured, or samples taken from the finished or semi-finished
product. Samples for chemical composition shall be as specified below:
(1) When samples are taken at the time the ingots are poured, at least one sample shall be
taken for each group of ingots poured simultaneously from the same source of molten metal.
(2) When samples are taken from the finished or semi-finished product, a sample shall be taken
to represent each 4000 lb (1814 kg) or fraction thereof of material in the shipment, except
that no more than one sample shall be required per lot.
Note: It is standard practice in the United States aluminum industry to determine conformance to the
chemical composition limits prior to further processing of ingots into wrought products. Due to the
continuous nature of the process, it is not practical to keep a specific ingot analysis identified with a
specific quantity of finished material.
c. Tensile strength.
(1) For pipes having a nominal weight of less than 1 lb/linear ft (0.45 kg/0.30 m), one tension
test specimen shall be taken for each 1000 lb (453.59 kg), or fraction thereof, in a lot.
(2) For pipes having a nominal weight of 1 lb or more/linear ft (0.45 kg/0.30 m), one tension test
specimen shall be taken for each 1000 ft (304.80 m), or fraction thereof, in a lot.
(3) If the shipment contains pipes of more than one alloy, temper, or size, only those pipes of
the same alloy, temper, and size shall be grouped for the purpose of selecting tension test
specimens. Other procedures for selecting samples may be employed if agreed upon by the
producer and the purchaser.
4.5.5.1 Disposition of samples. First article samples shall be furnished to the Government as
directed by the contracting officer (see 6.2).
4.5.6 First article information. Upon completion of first article inspection, the Government activity
responsible for conducting the inspection program (see 6.2), shall report the results of the inspection, with
appropriate recommendation, to the contracting officer. Approval of the first article samples or the
waiving of first article inspection does not preclude the requirements for performing conformance
inspection.
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