Al-Mn Alloy and process of manufacturing semifinished products h

Details Al-Mn Alloy and process of manufacturing semifinished products h Al-Mn Alloy and process of manufacturing semifinished products h

1978-11-30

1980-11-25

Dean, R.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75142, 75143, 75147, 148 2, 148 115A, 148 32, C22C 2102, C22F 104

Patent

active

042356288

ABSTRACT:
An Al-Mn alloy which can be brazed and enamelled, has a high resistance to corrosion and in a completely recrystallized state has an ultimate tensile stress of at least 150 N/mm.sup.2 ; a process for producing such an Al-Mn alloy by forming a melt comprising 0.8 to 2 weight percent manganese, 1.40 to 3 weight percent silicon, 0.2 to 1 weight percent iron, 0 to 0.2 weight percent copper, 0 to 0.2 weight percent magnesium, balance aluminum and in a total up to 0.2 by weight inevitable impurities which are due to the manufacture, casting said melt to form an ingot, annealing said ingot to 400.degree. to 620.degree. C. for 2 to 20 hours, hot-rolling and cold-rolling said ingot to final dimensions of the semifinished product, and subsequently annealing the semifinished product at a temperature above 450.degree. C.

REFERENCES:
patent: 4033794 (1977-07-01), Stowell et al.
patent: 4137102 (1979-01-01), Althoff et al.

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