Abstract: Clad steel plate of super duplex stainless steel and manufacturing method thereof. The clad steel plate of super duplex stainless steel which has a two-layer structure wherein one layer is duplex stainless steel, and the other layer is carbon steel, wherein said duplex stainless steel comprises the following components by weight: C?0.03%, Mn?1.20%, Si?0.80%, Cr: 24.0-26.0%, Ni: 6.0-8.0%, Mo: 3.0-5.0%, N: 0.24-0.32% and the balance being Fe and inevitable impurities; and said carbon steel comprises the following components by weight: C: 0.03˜0.12%, Si: 0.10˜0.45%, Mn: 0.70-1.60%, P<0.020%, S<0.025%, Cu: 0˜0.35%, Cr 0˜0.40%, Ni 0˜0.40%, Nb 0˜0.05%, Mo 0˜0.40%, Ti 0˜0.018%, Al 0.015˜0.045% and the balance being Fe and inevitable impurities.

Abstract: Disclosed are a corrosion-resistant marine composite steel plate and a manufacturing method therefor. The corrosion-resistant composite steel plate has a two-layer structure, wherein one layer is duplex stainless steel, and the other layer is marine carbon steel; said duplex stainless steel comprises the following components by weight: C?0.03%, Mn?2.00%, Si?1.00%, Cr: 21.0-23.0%, Ni: 4.5-6.5%, Mo: 2.5-3.5%, N: 0.08-0.20%, P?0.02%, S?0.025%, and the balance being Fe and inevitable impurities; and said marine carbon steel comprises the following components by weight: 0.03%?C?0.13%, Si?0.50%, Mn: 0.90-1.60%, P?0.020%, S?0.025%, Cu?0.035%, Cr?0.20%, Ni?0.40%, Nb: 0.02-0.05%, Ti?0.02%, Mo?0.08%, Al?0.015%, and the balance being Fe and inevitable impurities.