Product Code:SAE AMS4146 Title:Aluminum Alloy Forgings and Rolled or Forged Rings, 1.0Mg - 0.60Si - 0.28Cu - 0.20Cr (6061 - T4), Solution Heat Treated and Naturally Aged Issuing Committee:Ams D Nonferrous Alloys Committee Scope:This specification covers an aluminum alloy in the form of die forgings, hand forgings, rolled or forged rings, and forging stock.