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 II. Mechanical properties (bar, rod, forged parts and plate unaged 1/).

Form	Condition	Size, inches	Hardness(maximum)
Form	Condition	Size, inches	Brinell (3000 kg)	Rockwell
Rounds	Hot finished	Up to 4¼, incl.	245	C23
	Hot finished	Over 4¼	260	C26
	Hot finished and annealed	All	185	B90
	Cold drawn and annealed	All	185	B90
Hexagons, squares, rectangles and forged parts	Hot finished	All	245	C23
	Hot finished and annealed	All	185	B90
	Cold drawn and annealed	All	185	B90
Hexagons	Cold drawn	All	260	C26
Rounds	Cold drawn	¼ to 1, incl.	280	C29
		Over 1 to 3, incl.	260	C26
		Over 3 to 4, incl.	240	C22
Plate:	Hot rolled and annealed	Up to 4, incl	185	B90

1/ No tensile tests are required except as provided for in 4.3.2.2

TABLE III. Mechanical properties (age hardened bar; rod, forged parts and plate).

age hardened 3/

1/ Not applicable to subsize tensile specimens less than 0.250 inch diameter

(see 4.3.2.3).