Products Description
A low-alloy ND steel 09CrCuSb resistant to the dew-point corrosion of sulfuric acid for seamless steel pipe, plate, forged part and special welding material is prepared through smelting in ultra high-power electric furnace, refining outside the furnace, vacuum degassing, conticasting and tandem rolling.
It features that during the corrosion, a compact passivated film rich in Cr, Cu, Sb and Ti is generated on its surface, so having very high anticorrosion power.
ND steel is a low-alloy structural steel. Compared with other steel types such as low-carbon steel, Corten, CR1A, etc., ND steel has excellent corrosion resistance and mechanical properties.
Composition specification (GB 150.2-2011)
|
C |
≤0.12 |
Cr |
0.70~1.10 |
|
Si |
0.20~0.40 |
Cu |
0.25~0.45 |
|
Mn |
0.35~0.65 |
Sb |
0.04~0.10 |
|
P |
≤0.030 |
S |
≤0.020 |
Mechanical Property
|
Nominal Thickness (mm) |
Tensile Strength Rm(MPa) |
Yield Strength ReL(MPa) |
Elongation A(%) |
|
≤8 |
390~550 |
≥245 |
≥25 |
Application
ND steel is currently the most ideal steel for "sulfuric acid low-temperature dew point corrosion resistance" at home and abroad, and its seamless steel tubes are widely used in the manufacture of economizers, air preheaters, heat exchangers and evaporations that are used in high sulfur flue gas The device and other equipment are used to resist the dew point corrosion of sulfur-containing flue gas.
Contact now to get 09CrCuSb Quote
