MIL-N-46025 Nickel Bar, Flat Wire Ribbon And Strip For Electronic UseThis specification covers one grade of nickel for electronic use in the forms of bar, flat wire ribbon and strip see 6.1.

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MIL-N-46025B(MR)

Table III. Hardness of cold-rolled strip1

Thickness

Hardness

Rockwell B (max.)

(All widths) or equivalent2

0.005 to 0.010, incl. 70

Over 0.010 to 0.024, incl. 68

Over 0.024 to 0.125, incl. 64

1Deep-drawing quality, annealed temper

2For hardness conversions, see table IV of ASTM Standard

Hardness Conversion Tables for Metals, E 140. Also see 6.3

3.3 Dimensional tolerances, bar.

3.3.1 Distance between parallel surfaces. Bar, measured on the distance between parallel faces, shall not vary at any point from the specified dimensions by more than the amounts shown in table IV.

Table IV. Tolerances on distance between

parallel faces of bar

Distance between parallel faces,

Tolerance, inch

inches (minus only)

1/16 to 3/16, excl.

3/16 to 15/16, incl.

Over 15/16 to 1-1/2, incl.

Over 1-1/2 to 2, incl.

Over 2 to 2-3/4, incl.

0.002

.003

.004

.005

.006

Over 2-3/4 to 4, incl. .007

3.3.2 Length

3.3.2.1 Nominal lengths. Nominal lengths between 6 and 14 feet may be specified. The minimum length shall be the specified length. The maximum length shall be the specified length plus 2 feet, 1/2 inch.

3.3.2.2 Random lengths. All random lengths shall be between 4 and 16 feet, with not more than 25 percent by weight under 9 feet.

3.3.2.3 Cut straight lengths. If cut straight lengths are specified, the lengths shall be within the limits specified in table V.