Aluminumalloys铝合金Al109TAlPurealuminum,excellentcorrosionresistanceandmiddlestrength.Weldingofpurealuminum.纯铝，耐蚀性好，但强度不高，纯铝焊接用E1100Al209TAlSiSiliconaluminum,goodcrackresistanceandwiderangeofusage.Weldingofaluminumalloysotherthanaluminummagnesiumalloys.铝硅，抗裂性好，通用性大。铝合金焊接用，不宜焊接铝镁合金E4043Al309TAMnManganesealuminum,corrosionresistanceandhighstrength.Weldingofaluminumalloys.铝锰，强度高，耐蚀。铝合金焊接用E3003)