09CrCuSb (ND steel) seamless steel pipe is widely used in the manufacture of economizer, air preheater, heat exchanger, and evaporator in the service of high sulfur flue gas equipment, used to resist the dew point corrosion of sulfur flue gas.
09CrCuSb Seamless Tubes also have the ability of chloride ion corrosion resistance. 09CrCuSb Tubes from China are used in power plants and refineries to manufacture coal economizers, air preheaters, heat exchangers, and evaporators, which work in the high sulfur flue gas to resist condensation corrosion of sulfur flue gas.
It is the ideal steel for low-temperature dew point corrosion resistance of sulfuric acid at home and abroad. Low-alloy 09CrCuSb Tubes are also widely used.
Specification:
| Specification | Specification |
| 19*2-4mm | 76-114 * 4-10mm |
| 25 * 2-4mm | 133-140 * 6-14mm |
| 32 * 2-5mm | 159-219 * 21-35mm |
| 38-42 * 3-5mm | 273-325 * 7-50mm |
| 51-63 * 3-5mm | 356-630 * 10-20mm |
Chemical Composition
The specific chemical composition of 09CrCuSb steel may vary slightly depending on the manufacturing standards and requirements. It typically contains elements such as carbon (C), silicon (Si), manganese (Mn), chromium (Cr), copper (Cu), antimony (Sb), phosphorus (P), and sulfur (S).
| Grade | Chemical Composition(%) | |||||||
| C | Si | Mn | Cr | Cu | Sb | P | S | |
| 09CrCusb | ≤0.10 | 0.20-0.40 | 0.35-0.65 | 0.70-1.20 | 0.25-0.45 | ≤0.10 | ≤0.10 | ≤0.10 |
Mechanical Properties
| Grade | Tenslle Strength(MPa) | Yield Strength(MPa) | Elongation(%) |
| 09CrCuSb | 390-550 | ≥245 | ≥25 |
Applications
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09CrCuSb seamless steel pipes are widely used in various applications, including the manufacturing of economizers, air heat preheaters, heat exchangers, evaporators, and other equipment operating in high-sulfur environments.
ND Steel, known for its excellent resistance to sulfuric acid corrosion at low temperatures, is extensively utilized in the manufacturing of equipment that operates in environments with high sulfur-containing gases. This includes components such as economizers, air preheaters, heat exchangers, and evaporators that are subjected to sulfur-bearing flue gas condensation corrosion.
The widespread use of ND Steel in power plants and refineries is due to its ability to withstand the corrosive effects of sulfur-laden flue gases, which are common in these industrial settings. The materials are particularly effective in the following applications:
Economizers: Devices that recover waste heat from flue gases and use it to preheat the feedwater in a boiler.
Air Preheaters: Units that improve the efficiency of boilers by preheating combustion air using the heat from flue gases.
Heat Exchangers: Equipment designed to transfer heat between two fluids, which is crucial in various thermal processes within a power plant or refinery.
Evaporators: Components of desalination plants and other industrial processes where liquid is converted into vapor using heat.
