MIL-DTL-22200/1H(SH)
package is expected to influence results, another sample may be taken from the same lot and/or production run.
e. Retests of product (e.g., diffusible hydrogen, moisture, and chem. pads) shall be from the same sampling as
the original test, if feasible. If sufficient material is not available from the original sampling or storage of an opened
package is expected to influence results, another sample may be taken from the same lot and/or production run.
f. If the results of the testing/preparation error retest do not satisfy the applicable requirements, then a
conformance retest shall be performed per 4.5.3.2.1.3.
4.5.3.2.1.3 Conformance retest requirements. Retests for failure to meet test requirements shall be as follows:
a. For each original test that failed due to conditions other than those listed in 4.5.3.2.1.1, only one
conformance retest is permitted.
b. A conformance retest shall consist of repeating the test that failed two times (i.e., two-for-one). Note that a
mechanical property test such as tensile or impact toughness involves a set of test specimens and therefore two full
sets of specimens for each test that failed are required under this two-for-one rule. Results of all retests and reasons
for all retests shall be reported on the certification of conformance.
c. Retests of weld metal shall be from the same weld used for the original test, if feasible. If replacement test
welds are needed, they shall be fabricated using consumables from the original sampling, if feasible. If sufficient
material is not available from the original sampling or storage of an opened package is expected to influence results,
another sample may be taken from the same lot and/or production run.
d. Retests of product shall be from the same sampling as the original test, if feasible. If sufficient material is
not available from the original sampling or storage of an opened package is expected to influence results, another
sample may be taken from the same lot and/or production run.
e. Unless the welding procedure was determined to be the root cause of the original test failure, any
replacement test weld should employ the same welding procedure as the original test weld. If a new procedure is
used to correct the root cause of the original test failure, the retest shall include all tests conducted for the original
weld. Two-for-one is only required for the test that failed. All future lots of the material shall use the new
procedure. The reason for changing procedure shall be justified to the customer and included on the certification.
f. If the results of any conformance retest do not satisfy the applicable requirements, then the lot shall be
rejected.
4.5.3.3 Check mechanical testing tolerances. Unless otherwise specified (see 6.2), retest as part of receipt
inspection by a shipyard or other user of a product supplied in conformance with this specification will use the
following mechanical property tolerances to verify acceptability of the product. If these mechanical property
tolerances will not be used to verify acceptability of the product in retest as part of receipt inspection, this shall be
specified in the order as indicated in section 6.2.
a. Yield strength test results (round off to nearest 1000 psi) may be 3 percent higher than the specified
maximum or 3 percent lower than the specified minimum requirements of table III.
b. Ultimate tensile strength test results (when required) may be lower than the specified requirement of table
III by 3 percent (rounded off to nearest 1000 psi).
Elongation test results shall not be lower than 93 percent of the minimum requirement specified in table III.
c.
d. Charpy V-notch test results (both the average and the individual minimum value) may be lower than the
requirements specified in table II by 10 percent.
e. No tolerance for the maximum yield strength requirement is allowed for the 3/32-inch diameter MIL-7018-M
electrode.
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