ASTM B163 UNS N08825 / Incoloy 825 Seamless Heat Exchanger & Condenser Tubes
Price:
Negotiable
MOQ:
10 PCS
Delivery Time:
Depends on quantity
Brand:
YUHONG
Product Description
ASTM B163 UNS N08825 / Incoloy 825 Seamless Heat Exchanger & Condenser Tubes
Introduction and Standard Specifications
These seamless tubes are manufactured from nickel-iron-chromium alloy UNS N08825 (Incoloy 825) in strict compliance with the ASTM B163 standard. This specification defines requirements for seamless nickel alloy tubes designed specifically for condensers and heat exchangers, covering tubes with outside diameters of 3 inches (76.2 mm) and under. The latest published version is ASTM B163-22.
Material: UNS N08825 / Incoloy 825 Alloy
Incoloy 825 is a nickel-iron-chromium austenitic alloy enhanced with molybdenum, copper, and titanium, engineered to deliver exceptional corrosion resistance in demanding environments.
- Excellent resistance to corrosion in both oxidizing and reducing acids
- Superior resistance to stress corrosion cracking and pitting/crevice corrosion in chloride-containing media
- Good mechanical properties from cryogenic to moderately high temperatures
- Titanium addition stabilizes the alloy against sensitization during welding or high-temperature exposure
Chemical Composition and Mechanical Properties
The performance of N08825 tubes results from tightly controlled chemical composition and mechanical properties.
Typical Chemical Composition (Weight %):
| Element | Content (%) | Element | Content (%) |
|---|---|---|---|
| Nickel (Ni) | 38.0 - 46.0 | Titanium (Ti) | 0.60 - 1.20 |
| Chromium (Cr) | 19.5 - 23.5 | Manganese (Mn) | 1.00 |
| Iron (Fe) | ≥ 22.0 | Silicon (Si) | 0.50 |
| Molybdenum (Mo) | 2.50 - 3.50 | Aluminum (Al) | 0.20 |
| Copper (Cu) | 1.50 - 3.00 | Carbon (C) | 0.050 |
| Sulfur (S) | 0.030 |
Typical Room Temperature Mechanical Properties (Annealed Condition):
| Property | Metric Unit | Imperial Unit |
|---|---|---|
| Tensile Strength | ≥ 586 MPa | ≥ 85 ksi |
| Yield Strength | ≥ 241 MPa | ≥ 35 ksi |
| Elongation | ≥ 30% | ≥ 30% |
Product Application Scenarios
ASTM B163 N08825 seamless tubes are critical components in industries requiring reliability in harsh conditions:
- Chemical & Petrochemical Processing: Heat exchangers, condensers, reactor coolers, and piping systems handling sulfuric and phosphoric acids
- Oil and Gas: Heat exchanger tubing in offshore platforms and refineries with resistance to sour gas and chloride ions
- Marine and Offshore: Seawater cooling systems, condenser tubes in marine vessels, and desalination plant components
- Power Generation: Feedwater heaters, condensers, and heat exchange equipment in fossil fuel and nuclear power plants
- Acid Production & Pickling: Equipment for producing and handling acids, and pickling lines for steel treatment
- Emerging Energy Sector: Components in green hydrogen production and renewable energy systems where corrosion resistance is critical
Similar Products
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Yuhong Group Co.,Ltd
Location
20TH FLOOR,NO.1 NEW WORLD BUILDING ,NO.1018 MINAN ROAD,YINZHOU DISTRICT, NINGBO CITY, ZHEJIANG PROVINCE, CHINA
Contact Person
Jikin Cai