MIL-DTL-32505
3.6 Thermal processing. Heat treatment shall conform to the requirements of SAE AMS 2750 and
shall be such as to enable the material to meet the requirements of these specifications.
3.7 Dimensions. Dimensions for plates delivered for fabrication shall have an overall dimension
tolerance of +0.500/-0.000 for width and length unless otherwise specified in the contract or order
(see 6.2).
TABLE II. Minimum mechanical properties. 1/
Yield Strength,
Thickness, inches
Tensile Strength, ksi
Elongation percent
0.2% Offset, ksi
Class I
Class II
Class I Class II
Class I
Class II
TBD 2/
0.500 to 1.500, incl.
63
53
TBD
9
TBD
1.501 to 4.000, incl.
60
TBD
50
TBD
8
TBD
1/
The gage length shall be 1.400 inch for plates having a nominal thickness of 0.500 inch; all other thicknesses
shall have a gage length of 2.000 inches.
2/
To Be Determined
3.7.1 Tolerances. Unless otherwise specified in the contract or order (see 6.2), the plates shall not
vary from the specified ordered dimensions by an amount greater than that specified by AA H35.2,
except for thickness.
3.7.2 Thickness. Thickness tolerance for production armor and ballistic test plates shall be as
specified in Table III.
TABLE III. Thickness tolerances.
SPECIFIED WIDTH (Inches)
Ordered
Thickness
OVER
0.00
39.37 59.06 78.74
98.43
118.11
137.80
157.48
(Inches)
THRU
39.37
59.06 78.74 98.43
118.11
137.80
157.48
177.17
TOLERANCES - INCHES (PLUS and MINUS)
OVER
THRU
0.031
0.031 0.037 0.043
0.051
0.060
0.070
0.085
0.500
1.000
0.039
0.039 0.047 0.055
0.065
0.075
0.090
0.105
1.000
1.575
0.055
0.055 0.060 0.070
0.085
0.100
0.115
---
1.575
2.362
0.075
0.075 0.085 0.100
0.105
0.125
---
---
2.362
3.000
0.090
0.090 0.105 0.110
0.125
---
---
---
3.000
4.000
3.8 Marking for identification. Unless otherwise specified in the contract or purchase order (see
6.2) each plate shall be marked on one plate edge with the manufacturer's name or CAGE code, the
basic number of this specification, the plate thickness in inches, the alloy designation and the lot
number or code relating to the lot number (see 4.2). The height of the characters shall be 3/8 of an
inch or greater. Impression stamping shall not be used unless permitted by the procuring activity
(see 6.2). Each plate shall be marked in lengthwise rows of characters recurring at intervals not
greater than 3 feet, the rows being spaced not more than 6 inches apart and alternately staggered.
The characters shall be not less than 3/8 inch in height and shall be applied using a suitable marking
fluid whose residue shall not contain more than traces of halogen-bearing compounds and shall be
capable of being removed in hot alkaline cleaning solution without rubbing. The markings shall
have no deleterious effect on the plate material or its performance and shall be sufficiently stable to
withstand normal handling.
5
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