MIL-DTL-46077G
time of his first order or contract and at any time that the supplier has not furnished wrought
armor in the applicable thickness range under this specification within a period of 18 months
(see 4.4).
3.2 Chemical composition.
3.2.1 Class compositions. The chemical composition of the plates shall be as specified in
Table 1 for classes 1, 2 and 3. If no class is specified on the contract, drawing or order, Class 1
shall be supplied. Chemical composition variances shall meet the requirements of SAE AMS
2249.
Table 1. Chemical Composition - Percent by Weight
Other3
H1
Class
Al
V
C
O
N
Fe
Ti
Each
Total
Rem2
0.10
0.40
5.50 -
3.50 -
0.04
0.14
0.02
0.0125
0.25
1
max
max
6.50
4.50
max
max
max
max
max
Rem2
0.10
0.40
5.50 -
3.50 -
0.08
0.20
0.05
0.0150
0.30
2
max
max
6.75
4.50
max
max
max
max
max
Rem2
0.10
0.40
5.50 -
3.50 -
0.08
0.30
0.05
0.0150
0.30
3
max
max
6.75
4.50
max
max
max
max
max
Rem2
0.08
0.30
0.05
0.0150
4
max
max
max
max
1 Hydrogen shall be determined on each lot of the product as shipped.
2 Titanium is determined by differences.
3 Other elements need not be analyzed nor reported unless otherwise specified.
3.2.1.1 Class 4.
3.2.1.1.1 Class 4 composition. Upon approval of the procuring activity, an alternate
composition of titanium alloy may be authorized. In addition to the solute composition limits
specified in Table 1, suppliers must submit to the procuring activity established limits for each
intentionally added element as well as maximum limits for others.
3.2.1.1.2 Class 4 density. The density shall be 0.158 through 0.165 pounds per cubic inch.
Density may be calculated based on chemical composition range established.
3.3 Mechanical properties. Plate shall meet the minimum mechanical properties of Table 2 in
both the longitudinal and transverse directions after final heat treatment (See 4.6.1.2 and
4.6.2.2). After temperature exposure and cooling, a minimum of 0.001 inch shall be removed
from all surfaces of the sample prior to testing. Sufficient material shall be removed so as to
insure compliance of the sample with the requirements of 3.9.
4
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