QQ-N-286 Nickel-Copper-Aluminum Alloy, Wrought Uns N05500This specification covers all nickel-copper-aluminum alloy wrought forms formerly classified as class A. This alloy is designated under the Unified Numbering System for Metals and Alloys as UNS N05500. Except for cases where nonmagnetic properties are paramount, this alloy is intended to be age hardened prior to placing the material in service.

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QQ-N-286G TABLE XXIII.  Machining allowances for hot finished rod and bar (allow the

following oversizes).

1/  Dimensions apply to diameter of rods, distance between parallel surfaces of squares and hexagons, and separately to width or thickness of rectangles.

2/  The allowances are recommended for rounds to be machined in lengths 36 inches or less (such as stepdown shafts) and for squares, hexagons, and rectangles to be machined in lengths 24 inches or less. Lengths longer than those cited should show the finish, cross-sectional dimensions, and also the length in which the material is to be machined in order that material may be supplied with sufficient oversize, including allowance for out-of-straightness.

3/  The allowance for hot finished rod, rough turned or semismooth machined, provide for sufficient excess metal to insure straightness in finished shafts within the limits indicated above.

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