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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TABLE V. Tensile strength of cold drawn wire in coils.

QQ-N-286G

Condition	Size (inches)	Tensile strength lb/in2
Cold drawn, as drawn	All sizes	110,000-155,000
Cold drawn and annealed	All sizes	110,000 max
Cold drawn, spring temper, as drawn	0.057 and less 1/	165,000 min
	Over 0.057 to 0.114, inclusive 1/	155,000 min
	Over 0.114 to 0.229, inclusive 1/	150,000 min
	Over 0.229 to 0.312, inclusive 1/	145,000 min
	Over 0.312 to 0.375, inclusive 1/	135,000 min
	Over 0.375 to 0.437, inclusive	125,000 min
	Over 0.437 to 0.563, inclusive	120,000 min
Cold drawn, annealed and age hardened	All sizes	130,000 min
Cold drawn, as drawn, age hardened	All sizes	155,000 min
Cold drawn, spring temper, and age hardened:	Up to 0.114, inclusive	180,000 min
	Over 0.114 to 0.375, inclusive	170,000 min
	Over 0.375 to 0.563, inclusive	160,000 min

1/ Applicable to material in coil. For material in straightened and cut lengths, deduct 15,000 lb/in2 from above values.

TABLE VI. Bending properties of cold rolled sheet and strip. 1/

Thickness of sheet and strip (inch)		Radius of pin or mandrel, multiples of the thickness of the material	Angle of bend, degrees
Thickness of sheet and strip (inch)			Annealed sheet and strip	Half hard strip	Annealed and age hardened, sheet & strip, & full hard, cold rolled strip
From	To (incl)		Annealed sheet and strip	Half hard strip
Up to 0.010	0.031	0.5	180	120	90
Over 0.031	0.062	0.5	180	120	90
Over 0.062	0.125	0.5	180	120	90
Over 0.125	0.250	1.0	180	120	90

1/ There are no bending requirements for half hard aged or full hard aged strip.

3.7 Soundness. Material shall be of uniform quality and condition, free of defects harmful to its intended use, such as seams, pipe, cracks, excessive scale, fins, porosity, and segregation as determined by visual examination and nondestructive testing.

3.7.1 Ultrasonic inspection.

3.7.1.1 Large bar and forgings (Forms 2 and 7). Bar, rod, and forgings with a diameter or minimum distance between parallel surfaces of 4 inches or greater shall be ultrasonically inspected as specified in 4.3.3.1 and 4.3.3.2.