Products Description
09CrCuSb (ND steel) resistant to sulfuric acid low temperature dew point corrosion steel (ND steel, ND steel, 09CrCuSb steel, 09CrCuSb steel, etc.). Usually called 09 club.
09CrCuSb ND steel is a new type of steel resistant to sulfuric acid low temperature dew point corrosion developed by Shanghai Institute of materials and Xingcheng Special Steel from 1987 to 1990
ND steel is a low alloy structural steel. Compared with other steels such as low carbon steel, corten and cr1a, ND steel has excellent corrosion resistance and mechanical properties.
Sepcification
Standard: GB 150.2-2011 "Pressure Vessel Part 2: Materials" GB3087, GB5310, GB8163.
Description Name: 09CrCuSb Seamless Steel Tubes, 09CrCuSb Seamless Pipes, ND Steel tubes. 09CrCuSb boiler tubes.
Size:1/2inch to 5inch (12.7mm to 127mm).
Thickness: 0.8mm to 13mm.
Shape: Round.
Length: Single random length/ Double random length or as customer's actual request. Max length 18000mm.
Production process: Cold drawn or hot rolled.
Delivery Condition: Normalized or Annealed.
| 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 |
09CrCuSb Chemical Composition
| 09CrCuSb Chemical Composition (%) | |||||||
| C | Si | Mn | P | S | Cr | Cu | Sb |
| ≤0.12 | 0.20-0.40 | 0.35-0.65 | ≤0.030 | ≤0.020 | 0.70-1.10 | 0.25-0.45 | |
09CrCuSb Tubes Mechanical Property
| 09CrCuSb Tubes Mechanical properties At RT (EN ISO 6892-1) |
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| Tensile | Yield | Elongation | Corrosion resistance rate |
| Strength Rm (MPa) | Strength ReL (MPa) | A (%) | mg/cm².h |
| 390-550 | ≥245 | ≥25 | 7.4 |
Products Application
09CrCuSb seamless steel pipe is widely used in the manufacture of economizer, air heat preheater, heat exchanger, evaporator and other equipment serving in high sulfur gas, which is used to resist condensation corrosion of sulfur-containing flue gas.
It is characterized by resistance to low temperature sulfuric acid dew point corrosion of flue gas below 200 ° C. It is a new clean energy-saving product.
The market price of the special sulfuric acid dew point corrosion resistant pipe for 09CrCuSb boiler heat exchanger is about 9000 yuan per ton, only 40% of the price of stainless steel pipe of the same specification.
When it is used in sulfur-containing medium, its corrosion resistance is no less than that of stainless steel, and the corrosion rate is 3.481mg/cm2. H (34.81g / m2. H) in sulfuric acid solution of 70 ℃ and 50%.
The corrosion resistance of ND steel (09CrCuSb) is more than 3 times that of 321 stainless steel and 7 times that of 20g. It can be seen that ND steel is the first choice material for the experimental chemical plant in the environment of sulfur-containing medium.
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