Patent ID: 9677164
Date: 2017-06-13
CPC Classifications: B32B,C22C,C23C,Y10T

Claim:
1. Steel strip provided with a hot dip galvanized zinc alloy coating layer, wherein the zinc alloy consists of: 1.6-1.9 weight % aluminium, wherein magnesium is present such that the amount of aluminium in weight % is the same as the amount of magnesium in weight % plus or minus a maximum of 0.3 weight %; optional <0.2 weight % of one or more additional elements selected from the group consisting of Pb, Sb, Ti, Ca, Mn, Sn, La, Ce, Cr, Ni, Zr and Bi; unavoidable impurities; the remainder being zinc; wherein the zinc alloy coating layer has a thickness of 3-12 μm, wherein the silicon content in the zinc alloy layer is below 0.0010 weight %.