TH159942B - Hot dipped galvanized steel sheet - Google Patents

Abstract

New request updated 03/22/2016 Providing hot-dip galvanized steel sheets that are excellent in terms of adhesion. The surface is coated after the pressing action. The welding condition is spot-proof. Corrosion resistance after processing Color after pressing forming action And the picture appears beautiful after painting. Hot dipped galvanized steel sheet including steel plate Hot-dip zinc plating layer and intermetallic compound. Among them, the steel plate has a chemical composition of % by mass with C 0.03% or more and 0.70% or less Si: 0.10% or less Mn: 0.5% or more and 0.9% or less P: 0.020% or more and 0.050% or less S: 0.010% or less Nb: 0.010% or more and 0.035% or less N: 0.005% or less Al: 0.10% or less and the balance is Fe and impurities. that is unavoidable in which the plating layer Hot-dip galvanized coating contains Al: 0.3% or more and 0.6% or less, and in which Intermetallic compounds contain 0.12 gm-2 or more and 0.22 gm-2 or less of Al and Fe2Al5 with an average grain diameter of 1 μm or less:

Claims (1)

1. New request updated 22/03/2016 1. Hot-dip galvanized steel sheet comprising steel plate (Base steel plate) having a chemical composition in % by mass of C 0.03% or more and 0.07% or less Si: 0.10% or less Mn: 0.5% or more and 0.9% or less P: 0.020 % or more and 0.050% or less S: 0.010% or less Nb: 0.010% or more and 0.035% or less N: 0.0: