09CrCuSb (ND steel) Tubes are 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.
Standard: GB 150.2-2011 "Pressure Vessel Part 2: Materials" GB3087, GB5310, GB8163.
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.
09CrCuSb Chemical Composition
| 09CrCuSb Chemical Composition (%) | |||||||
| C | P | S | |||||
| <=0.12 | 0.20-0.40 | 0.35-0.65 | <=0.030 | <=0.020 | 0.70-1.10 | 0.25-0.45 | 0.04-0.10 |
09CrCuSb Tubes Mechanical Property
| 09CrCuSb Tubes Mechanical properties At RT (EN ISO 6892-1) |
|||
| A (%) | mg/cm².h | ||
| 390-550 | >=245 | >=25 | 7.4 |
09CrCuSb have good Corrosion resistance
| Corrosion Rate (mg/cm².h) | ||
| 09CrCuSb (ND) | 7.3 | 1 |
| Corten-A | 63 | 8.63 |
| 13.4 | 1.84 | |
| A3(Q235B) | 103.5 | 14.18 |
| TP321(1Cr18Ni9) | 21.7 | 2.97 |
For the corrosion resistance, GB 150.2-2011 stipulates: The steel pipe shall be tested for corrosion resistance, and one sample shall be taken from each of the two steel pipes in each batch, and each sample shall be a pipe length of 10 mm.
24 solution with a mass fraction of 50% at a constant temperature of 70℃ (±2℃) for 24 hours. The average value of the corrosion rate of the two samples is not greater than 80g/m2×h or 140g/m2×h. The specific indicators are indicated in the order contract.
