Product Code:SAE AMS4186 Title:Aluminum Alloy, Bars, Rods, and Wire, Rolled Or Cold Finished, 5.6zn 2.5mg 1.6cu 0.23cr, as Fabricated Issuing Committee:Ams D Nonferrous Alloys Committee Scope:This specification covers an aluminum alloy in the form of bars, rods, and wire. Primarily for parts requiring forming and as stock for flash welded rings which are to be subsequently solution and precipitation heat treated. Certain design and processing procedures may cause these products to become susceptible to stress-corrosion cracking after solution and precipitation heat treatment; ARP 823 recommends practices to minimize such conditions.