Acid resistant steel 09CrCuSb is ND steel. It's usually called 09 chromium copper antimony steel. Acid resistant steel 09CrCuSb has good sulfuric acid dew point corrosion performance. It is widely used in manufacturing high sulfur flue gas economizer, air preheater, evaporator and heat exchanger equipment and other equipment to withstand corrosive sulfur flue gas dew point. Acid resistant steel also has resistance to chloride ion and good corrosion resistance.
Chemical composition of acid resistant steel 09CrCuSb: C: ≤ 0.10, Si: 0.20-0.40, Mn: 0.35-0.65, Cr: 0.70-1.20, Cu: 0.25-0.45, Sb: ≤ 0.10, P: ≤ 0.10, S: 0.10.
Mechanical properties of acid resistant steel 09CrCuSb: tensile strength: 390 MPa -550 MPa, yield strength: ≥ 245 MPa, elongation: 25%.
The corrosion resistance of acid resistant steel 09CrCuSb is higher than that of carbon steel and stainless steel. Our acid resistant steel 09CrCuSb has been used by major refineries and manufacturing units with excellent results and has been widely praised.
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