Gnee Steel (Tianjin) Co., Ltd. is a leading and highly trusted manufacturer and supplier of 09CrCuSb corrosion-resistant ND steel pipes in China.
We warmly welcome customers to purchase premium-quality 09CrCuSb ND steel pipes directly from our factory. All products are supplied with stable quality, strict inspection, and competitive pricing.
The 09CrCuSb seamless steel pipe, commonly known as ND steel, is extensively applied in power generation plants and oil refineries.
It is mainly used for manufacturing economizers, air preheaters, heat exchangers, and evaporators operating in high-sulfur flue gas environments.
These components are designed to effectively resist condensation corrosion and sulfur-containing flue gas erosion.
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
Tensile Strength (TS): 390–550 MPa
Yield Strength (YS): ≥245 MPa
Elongation (A): ≥25%
Products Applications
09CrCuSb seamless steel pipes are widely utilized in the production of economizers, air preheaters, heat exchangers, and evaporators exposed to high-sulfur flue gas conditions.
The material offers outstanding resistance to low-temperature sulfuric acid dew point corrosion, particularly at temperatures below 200°C. As a result, 09CrCuSb ND steel is regarded as a modern, environmentally friendly, and energy-efficient corrosion-resistant material.
What is 09CrCuSb steel?
09CrCuSb, also known as ND steel, is a low-alloy corrosion-resistant steel specially designed for use in acidic dew point corrosion environments. It contains alloying elements such as chromium (Cr), copper (Cu), and antimony (Sb), which significantly enhance its resistance to sulfuric acid and flue gas corrosion.
Why is 09CrCuSb called ND steel?
"ND" stands for Nitric acid and Dew-point corrosion resistance. The steel was developed to withstand low-temperature acid condensation corrosion commonly found in boilers, heat exchangers, and flue gas systems.
Does 09CrCuSb steel have good weldability?
Yes. 09CrCuSb steel has good weldability. Standard welding methods such as SMAW, SAW, and TIG can be used, but low-hydrogen electrodes and proper preheating may be recommended for thicker sections.
Is 09CrCuSb suitable for high-temperature service?
09CrCuSb is mainly designed for medium-temperature environments where acid dew point corrosion occurs. It is not intended for extremely high-temperature pressure vessel applications without proper evaluation.
