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0Cr17Ni4Cu4Nb is a super austenitic stainless steel alloyed with nickel, copper, and niobium, providing outstanding corrosion resistance, heat resistance, and mechanical strength.
It is widely used in chemical processing, marine, and high-corrosion industrial environments, where ordinary stainless steels fail under chloride or acidic conditions.
Internationally, it is recognized as UNS N08926 / EN 1.4563, ensuring compatibility with global standards for critical industrial applications.
SEO Keywords Embedded: 0Cr17Ni4Cu4Nb stainless steel, UNS N08926, super austenitic steel, high corrosion resistance, chemical processing, marine applications, heat exchangers, nickel-copper stainless steel.
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Chemical Composition (%)
| Element | Content |
|---|---|
| C | ≤ 0.03 |
| Cr | 16.5 – 18.5 |
| Ni | 3.5 – 5.5 |
| Cu | 3.5 – 4.5 |
| Nb | 0.5 – 1.0 |
| Mn | ≤ 2.0 |
| Si | ≤ 1.0 |
| P | ≤ 0.03 |
| S | ≤ 0.01 |
| Fe | Balance |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 550 – 750 MPa |
| Yield Strength | ≥ 230 MPa |
| Elongation | ≥ 40% |
| Hardness (HRB) | ≤ 95 |
| Corrosion Resistance | Excellent in chloride and acidic environments |
Key Features
Super austenitic corrosion resistance, superior to 316L in chloride and acidic conditions
Excellent resistance to pitting, crevice corrosion, and stress corrosion cracking
High-temperature stability up to 500°C
Weldable and formable, suitable for complex components
Ideal for chemical, petrochemical, marine, and heat exchanger applications
Applications
Heat exchangers and condensers in chemical and petrochemical plants
Marine equipment, saltwater pipelines, and pumps
Acid and chloride-containing environments
Industrial machinery and high-corrosion components
Welding & Fabrication
Can be welded using standard stainless steel techniques (TIG, MIG, arc)
Preheating not required, but post-weld solution annealing recommended for maximum corrosion resistance
Easy to machine in annealed condition
International Equivalent Standards
| China GB | ASTM / UNS | EN / DIN | ISO |
|---|---|---|---|
| 0Cr17Ni4Cu4Nb | UNS N08926 | 1.4563 | N08926 |
Industry Case Studies
Case 1: Heat Exchangers in Chemical Plants
Material: 0Cr17Ni4Cu4Nb
Benefit: Resistant to strong chloride and acid corrosion
Outcome: Extended operational life by 40% compared to 316L stainless steel
Case 2: Marine Piping Systems
Material: 0Cr17Ni4Cu4Nb
Benefit: High resistance to seawater pitting and crevice corrosion
Outcome: Reduced maintenance frequency and downtime
Case 3: Petrochemical Equipment
Material: 0Cr17Ni4Cu4Nb
Benefit: Stable performance at high temperature and pressure
Outcome: Improved equipment reliability in harsh chemical environments
FAQ – 0Cr17Ni4Cu4Nb Stainless Steel
Q1: What is 0Cr17Ni4Cu4Nb used for?
Chemical process equipment, heat exchangers, marine piping, petrochemical machinery, and high-corrosion components.
Q2: How is it different from 316L stainless steel?
Contains higher nickel, copper, and niobium, giving superior corrosion and pitting resistance in chloride and acidic conditions.
Q3: Can 0Cr17Ni4Cu4Nb be welded?
Yes, standard stainless steel welding methods apply. Post-weld solution annealing is recommended.
Q4: What temperature can it withstand?
High-temperature stability up to 500°C with retained corrosion resistance.
Q5: What forms are available?
Plates, sheets, coils, tubes, and pipes
Contact Us
For inquiries, technical support, or customized solutions regarding 0Cr17Ni4Cu4Nb (UNS N08926 / EN 1.4563) stainless steel products, please contact our professional team. We provide fast response, global shipping, and tailored services to meet your chemical, marine, and industrial requirements.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+8615769214734
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