MIL-DTL-46035C(MR)
4.6.2 Test procedures.
4.6.2.1 Preparation of samples.
4.6.2.2 Tension tests. Tension tests shall be conducted in accordance with ASTM E8. The yield
strength shall be determined by the offset method by plotting a stress-strain diagram. The limiting offset
shall be 0.10 percent (0.001 inch per inch of gage length). The strain rate shall not exceed 0.005
in./in./min. up to the yield strength at 0.2 percent offset.
4.6.2.2.1 Elevated temperature tensile tests. Tensile tests at elevated temperature shall be
conducted in accordance with ASTM E21, except that the test temperature and time at temperature
shall be as follows:
Test temperature: 300°F
Time at temperature: 30 minutes
Strain rate: 0.005 in./in./min., maximum
4.6.2.2.2 Yield strength. If the average yield strength for each sample is above the minimum yield
strength requirements of the drawing, the piece will be accepted as having met the yield strength
requirements.
4.6.2.2.3 Ductility. The average reduction-in-area and elongation shall be determined for each
sample. If each average is equal to, or above the average set out in table II for the upper limit of the
required yield strength range, the piece will be accepted as having met the reduction-in-area and
elongation requirements.
4.6.2.3 Impact tests. Charpy V-notch impact tests shall be conducted in accordance with ASTM
E23. Standard reference specimens are available from the National Institute of Standards and
Technology (see 6.4). Any comparison of specimens shall be done within one year prior to the time of
inspection testings.
4.6.2.3.1 Impact resistance. If the average value for each sample is equal to or above the value
given in table II opposite the upper limit of the required yield strength range, the piece will be accepted
as having met the requirements for impact resistance.
4.6.2.4 Density tests. Density tests shall be performed in accordance with ASTM B311.
4.7 Rejection.
4.7.1 Examination. A lot shall be subject to rejection for failure to meet the visual and dimensional
requirements when examined in accordance with 4.5.
4.7.2 Tests. Unless otherwise specified (see 6.2), where one or more test specimens fail to meet
the requirements of the specification the lot represented by the specimen or specimens shall be subject
to rejection.
4.8 Retests. When no sampling plan is provided or approved by the procuring agency and where
there is evidence that indicates that the specimen was not representative of the lot of material, and when
the detail specification does not otherwise specify, at least two specimens shall be selected to replace
each test specimen which failed. All specimens so selected for retest shall meet the requirements of the
specification or the lot shall be subject to rejection.
6
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business