MIL-DTL-45204D
TABLE I. Types.
Type
Minimum Gold Percent
Type I
99.7 percent
Type II
99.0 percent
Type III
99.9 percent
TABLE II. Grades.
Grade
Hardness (Knoop)
Grade A
90 max.
Grade B
91 129, incl.
Grade C
130 200, incl.
Grade D
201 and over.
TABLE III. Purity vs. hardness.
Purity (Type)
Hardness (Grades)
Type I
A, B, or C
Type II
B, C, or D
Type III
A (only)
1.2.4 Classes. Unless otherwise specified in the contract or purchase order (see 6.2), the
thickness will conform to the class designation specified in Table IV.
TABLE IV. Minimum class thickness.
Class
Minimum Thickness (Inches)
Class 00
0.00002
Class 0
0.00003
Class 1
0.00005
Class 2
0.00010
Class 3
0.00020
Class 4
0.00030
Class 5
0.00050
Class 6
0.00150
2. APPLICABLE DOCUMENTS
2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this
specification. This section does not include documents cited in other sections of this specification
or recommended for additional information or as examples. While every effort has been made to
2
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