Al-Mg alloy products suitable for welded construction

Details Al-Mg alloy products suitable for welded construction Al-Mg alloy products suitable for welded construction

2007-05-01

2007-05-01

King, Roy (Department: 1742)

Metal treatment

Stock

Aluminum base

C420S543000, C420S542000, C420S541000

Reexamination Certificate

active

10392310

ABSTRACT:
The invention relates to an Al—Zn—Mg—Cu alloy worked product, characterised in that contains (percentage by weight)Mg 4.85–5.35Mn 0.20–0.50Zn 0.20–0.45Si < 0.20Fe < 0.30Cu < 0.25Cr < 0.15Ti < 0.15Zr < 0.15the remainder being aluminium with its inevitable impurities.This product preferentially has an elongation at fracture A(LT)of at least 24% and an Rm(LT)×A(LT)parameter of at least 8500. It shows a good stress and intergranular corrosion resistance.It may be used for welded constructions, particularly tankers, motor car bodywork, and industrial vehicles.

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Cottignies, L. et al, AA 5186: a new aluminum alloy for welded construction, Pechiney Centre de Recherches de Voreppe et al, Feb. 26, 1999.

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