1. What is ND (09CrCuSb) Steel?
ND (09CrCuSb) steel is a type of low-alloy heat-resistant steel, primarily composed of chromium (Cr), copper (Cu), antimony (Sb), and small amounts of carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), molybdenum (Mo), nickel (Ni), among others. Renowned for its exceptional high-temperature and corrosion resistance properties, this steel is widely utilized in the manufacturing of heat exchange equipment.
2. Chemical Composition Table of ND (09CrCuSb) Steel Pipe
|
Element
|
Chemical Composition (%)
|
|
Carbon (C)
|
≤0.12
|
|
Silicon (Si)
|
≤0.35
|
|
Manganese (Mn)
|
≤0.50
|
|
Phosphorus (P)
|
≤0.025
|
|
Sulfur (S)
|
≤0.020
|
|
Chromium (Cr)
|
0.30-0.60
|
|
Copper (Cu)
|
0.25-0.45
|
|
Antimony (Sb)
|
0.10-0.30
|
|
Molybdenum (Mo)
|
≤0.25
|
|
Nickel (Ni)
|
≤0.30
|
3. Mechanical Performance Table of ND (09CrCuSb) Steel Pipe
|
Performance Indicator
|
Value
|
|
Yield Strength (MPa)
|
≥245
|
|
Tensile Strength (MPa)
|
≥400
|
|
Elongation (%)
|
≥20
|
|
Impact Toughness (J)
|
≥39
|
4. Types of Finned Tubes Suitable for ND (09CrCuSb) Steel Pipe
- External Finned Tubes: Commonly used in applications such as air coolers and radiators.
- Internal Finned Tubes: Suitable for steam condensers and heat exchangers.
- Integral Finned Tubes: Featuring a unique structure, they are suitable for special process equipment such as furnace heaters.
5. Characteristics and Advantages of ND (09CrCuSb) Steel Pipe
- High Temperature Resistance: Stable mechanical properties suitable for high-temperature processes.
- Corrosion Resistance: Resistance to oxidation, sulfurization, and nitridation, ensuring long-term use without corrosion.
- High Strength: High yield strength and tensile strength.
- High Impact Toughness: Possesses certain impact toughness, less prone to fracture.
6. Application Fields of ND (09CrCuSb) Steel Pipe
ND (09CrCuSb) steel pipe is widely used in industries such as power generation, petrochemicals, metallurgy, and fertilizers for heat exchange equipment including boilers, heat exchangers, heaters, and coolers. In environments with high temperatures and strong corrosion, ND (09CrCuSb) steel pipe demonstrates excellent applicability and stability, providing reliable heat exchange solutions for industrial production.
ND (09CrCuSb) Steel Finned Tubes |
