MIL-DTL-8971F
TABLE III. Qualification inspections.
Requirement
Verification
Quantity of disk
Quantity of rod
Inspections
paragraph
paragraph
electrodes
electrodes
Group A: Material 1
-
-
Workmanship
20
20
Cleanliness
20
20
Group B: Dimensions
20
20
Mass
20
20
Density2
20
20
Resistivity2
-
-
Group C: Flexural strength2
-
-
Impurities
40
40
Accuracy and
repeatability
500
50
1
The Group A material inspection consists of an examination of the purity certification for the raw stock material
used to manufacture the electrodes (see 3.2).
2
Designates inspections that may have a non-electrode test specimen requirement (see 4.3.1). When choosing to
use a non-electrode test specimen, include a quantity of non-electrode test specimens that matches the electrode
quantity.
4.4 Qualification inspections. Qualification inspections shall be performed on sample
electrodes and non-electrode test specimens, which were produced with equipment, materials,
procedures and processes normally used in production and which were processed as a single
qualification lot. A qualification lot is defined as an indefinite quantity of electrodes and non-
electrode test specimens, which were manufactured at the same location, from the same mix of
graphite material, and in accordance with the same manufacturing procedures and processes, and
which were subjected to the manufacturer's purification process at the same time. The
qualification samples shall be subjected to the inspections shown in table III in accordance with
the procedures in 4.6. One or more failures shall be cause for denial of qualification. The
qualification inspection samples for each examination and test shall consist of the quantities of
electrodes and non-electrode test specimens as are indicated in table III. Inspection samples that
are not damaged or contaminated in earlier inspections may be used in later inspection tests.
4.4.1 Qualification inspection responsibility. The manufacturer shall be responsible for
the performance of all qualification inspections. Electrode accuracy and repeatability tests and
calculations shall be performed at a laboratory approved by the qualifying activity. The
manufacturer may use his own or other suitable facilities for the performance of all other
qualification inspections, unless disapproved by the qualifying activity. When practical, the
inspections shall be performed in the order shown in table III. Units passing group A and B
inspections may be reused in subsequent inspections of the same qualification, provided they
have not been broken or contaminated. Group C inspections are considered destructive testing
and the units tested shall not be reused.
9
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business