ND steel 09CrCuSB chemical composition and mechanical properties
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Chemical composition
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C
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SI
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MN
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CR
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CU
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SB
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P
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S
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≤0.10
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0.20-0.40
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0.35-0.65
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0.70-1.20
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0.25-0.45
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≤0.10
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≤0.10
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≤0.10
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Mechanical properties
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Tensile strength（Mpa）
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yield strength (Mpa)
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elongation (%)
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hardness
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390-550
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≥245
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≥25
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Comparison of corrosion rate (mg/cm. H) between ND steel and other steel immersed in 50% H2SO4 sulfuric acid solution at 70℃
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GRADE
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09CuCuSB(NDsteel)
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CRIR
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1Cr18Ni9（304）
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Corten
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STEN
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A3（Q235B）
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corrosion rate
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7.3
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13.40
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21.70
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63.00
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27.4
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103.50
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multiple
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1
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1.84
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2.97
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8.63
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3.75
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14.11
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The corrosion rate of ND steel is 2.97 times of 304 stainless steel, 8.63 times of cowden steel, and 1.84 times of Q235B of Japan CRIR.product
By the majority of users after the use of a wide range of praise.
It is mainly used for
Economized gas, air preheater, heat exchanger and evaporator in high sulfur flue gas are used to resist condensation corrosion of sulfur flue gas.Excellent resistance to sulfur ions, hydrochloric acid and other acid corrosion.
Execution standard
A.Finished product implementation standard:
Seamless steel tube of structure: GB/ t8162-2008
Acceptance, packaging, marking and quality certificate of steel tube: gb2102-88
2.Material standard:
ND steel tube (09CrCuSb: 09 chrome-cop-antimony) : gb150-98 GB/T6728
A.About ND steel "brief introduction:
Mainly used for: economizer, air preheater, heat exchanger and evaporator in high-sulfur flue gas to resist condensation corrosion of sulfur-containing flue gas.Excellent resistance to sulfur ions, hydrochloric acid and other acid corrosion.
ND steel at home and abroad is the most ideal "sulfuric acid at low temperature dew point corrosion resistant steel, 09 crcusb (ND) steel steel seamless tube/plate main appraisal index (50% of the 70 ° - H2SO4 solution soak for 24 hours) corrosion rate is not more than 14 mg/cm h., and carbon steel, Japan's imports of similar compared to steel, stainless steel corrosion resistant ability to teach, is 1.84 times that of Japan CR1R steel 1 cr18ni9 steel is 2.97 times, 8.63 times that of Corten steel, 14.11 times that of Q235B steel.
09Crcusb (ND steel) steel is based on boilers;Electric furnace for the purpose of heat exchange, smoke pipe, chimney, etc. Developed with excellent resistance to sulfuric acid dew point corrosion of hot rolled steel plate, steel pipe.Its superior sulfuric acid dew point corrosion resistance performance and very high cost performance, is completely can replace stainless steel, beyond stainless steel (in sulfuric acid dew point corrosion resistance) the best material, ND steel has great economic significance, in line with today's efficient, longevity, energy conservation, environmental protection and other "green" concept and national development policy guidance.
