High corrosion-resistance strip steel and manufacturing method therefor

A corrosion-resistant cold-rolled strip steel, comprising a carbon steel base layer, a corrosion-resistant cladding layer roll-bonded to the carbon steel base layer, and a transition layer between the carbon steel base layer and the corrosion-resistant cladding layer, wherein the carbon steel base layer comprises the following chemical elements in mass percentage:

• C:
• 0.01-0.20%;
• Si:
• 0.10-0.5%;
• Mn:
• 0.5-2.0%;
• Al:
• 0.02-0.04%;
• Ti:
• 0.005-0.018%;
• Nb:
• 0.005-0.020%;
• and a balance of Fe and unavoidable impurities, wherein the corrosion-resistant cladding layer is austenitic stainless steel or pure titanium, and the corrosion-resistant cladding layer has a thickness that is 0.5-5% of a total thickness of the strip steel, and wherein the carbon steel base layer has a microstructure of ferrite and pearlite, the austenitic stainless steel has a microstructure of austenite, and the transition layer has a microstructure of pearlite and ferrite, and wherein the thickness of the cold-rolled strip is 0.5-2 mm and the thickness of the corrosion-resistant cladding layer is 12-20 μm.