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Mn's function in 3xxx alloy series
Source:Zhengzhou Golden Foil Aluminium Industry Co., Ltd AddTime: 2013-9-3 Hit:2074

3xxx series is the aluminium alloy which with Mn as the main alloy elements. Mn’s proportion is about 1.0%-1.6%, its strength will enhnce as  Mn increasing. But when the proportion of Mn get to 1.6%, alloy would occuer embrittlement, easy cracked when deforming.