MIL-DTL-46035C(MR)
3.4.1.1.1 Maximum yield strength. The specified yield strength range may be exceeded providing
the percent elongation, percent reduction in area, and V-notch Charpy impact resistance do not fall
below values specified in table II for the upper limit of the specified yield strength range.
TABLE II. Minimum mechanical property requirements.
Transverse direction
V-notch
Yield strength
Average
Charpy impact
increments
Average
reduction
resistance
(0.2% offset)
(at -40 °F)
elongation
in area
(ft.lb)
(psi)
(percent)
(percent)
120,000 - 129,999
13
25
13
130,000 - 139,999
11
23
11
140,000 - 149,999
10
21
10
150,000 - 159,999
10
21
10
160,000 - 169,999
8
15
8
170,000 - 179,999
6
13
6
180,000 - 189,999
6
13
6
190,000 - 199,999
5
12
5
200,000 - 210,000
5
12
5
3.4.1.1.2 Elevated temperature properties. For applications requiring elevated temperature
properties, the contractor shall demonstrate, by presenting published data or conducting special tests
that the proposed alloy will meet a minimum transverse yield strength (0.2% offset) requirement of
140,000 psi at 300°F. In addition, the elongation, reduction in area, and V-notch Charpy impact
resistance shall be equal to or greater than the values shown in table II opposite the 170,000-179,999
psi strength range.
3.4.1.2 Ductility. The reduction in area and elongation requirements shall be as specified in table
II for the applicable yield strength range.
3.4.2 Impact resistance. The V-notch Charpy impact resistance shall be as specified in table II
for the applicable yield strength range.
3.5 Density. The maximum density of titanium alloy shall be 4.70 grams per cubic centimeter.
Certification of the density shall be provided by the contractor.
3.6 Dimensions. Dimensions and dimensional tolerances shall be as specified on the applicable
drawing or contract, plus any prolongation (see 6.3.2) which is an integral part of the piece as heat
treated.
3.7 Identification marking. Unless otherwise specified (see 6.2), each piece shall be legibly and
indelibly marked with the piece number, heat number, or designation, the number of this specification,
and the manufacturer's identification.
3.8 Workmanship. The titanium alloys shall be uniform in quality and condition; free from seams,
injurious segregations, cracks and other defects which, due to their nature, degree or extent, would
detrimentally affect the suitability of the material for the intended use.
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