Products Description
Our Advantages
1. Strong Corrosion Resistance
Our Incoloy 825 Pipe has passed intergranular corrosion testing, demonstrating excellent intergranular corrosion resistance. It is also resistant to chloride and acidic environments, making it suitable for marine chemical processing, pollution control, and pickling plants.
2. High Strength
Our pipes undergo tensile and notch testing, maintaining mechanical integrity at temperatures up to 540°C (1000°F), making them suitable for heat exchangers and condensers.
3. Surface Treatment
Our Incoloy 825 Pipe undergoes pickling and passivation treatment, resulting in a clean, smooth surface that enhances corrosion resistance.
4. High Dimensional Accuracy
Our pipes undergo precision cold drawing and annealing processes, ensuring strict dimensional tolerances and roundness. Each batch undergoes laser or ultrasonic dimensional inspection to ensure compliance with ASTM B423 standards.
5. Customization Services
We support customized dimensional services, including custom outer diameter, wall thickness, and length. We offer fixed-length cutting services as well as pipe bending and U-bending services.
6. Shipping and Packaging
Our pipes are packaged using various methods, including plastic caps, plastic film, woven bags, and wooden crates/iron frames to prevent damage or contamination during transportation. We offer land, air, and sea freight options and can provide samples.
application areas
- Chemical processing equipment
- Heat exchangers and condensers
- Pollution control systems
- Ships and offshore pipelines
- Pickling equipment
- Acid production and processing systems
Chemical Composition
| Element | Ni | Fe | Cr | Mo | Cu | Ti | Mn | C | Si | S |
|---|---|---|---|---|---|---|---|---|---|---|
| Incoloy 825 | 38–46 | Balance | 19.5–23.5 | 2.5–3.5 | 1.5–3.0 | 0.6–1.2 | ≤1.0 | ≤0.05 | ≤0.5 | ≤0.03 |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength 0.2% (MPa) | Elongation (%) | Hardness (HB) |
| Metric | ≥ 550 MPa | ≥ 220 MPa | ≥ 30% | ≤ 200 HB |
| Imperial | ≥ 80 ksi | ≥ 32 ksi | ≥ 30% | ≤ 200 HB |
Possible Alternative Grades
| Alternative Grades | Reasons |
| Inconel 625 | High strength and good resistance to pitting corrosion. |
| Hastelloy C276 | Exhibits excellent performance in strong oxidizing agents and mixed acids. |
| Alloy 904L | A cost-effective solution for weakly acidic and chloride environments. |
Products Show
Testing Equipment
Factory Equipment
Pickling equipment
Products Package
FAQ
Q: What is Incoloy 825?
A: Incoloy 825 (UNS N08825) is a nickel-iron-chromium alloy with additions of molybdenum, copper, and titanium. It offers excellent resistance to sulfuric and phosphoric acid corrosion and effectively prevents pitting, crevice corrosion, and stress corrosion cracking. Therefore, seamless Incoloy 825 pipes are widely used in highly corrosive and high-pressure environments.
Q: What standards and specifications do your seamless Incoloy 825 pipes comply with?
A: Our seamless Incoloy 825 pipes are manufactured according to ASTM B423/ASME SB423 standards and can also be supplied according to ASTM B829, EN standards, or customer-specific technical requirements. Each pipe is supplied with complete compliance documentation and an EN 10204 3.1 material test certificate.
Q: What sizes and tolerances can you provide?
A: We supply seamless Incoloy 825 pipes in a variety of outer diameters, wall thicknesses, and lengths, including standard and custom sizes.
Q: Which alloy is better suited for acidic and corrosive environments: Incoloy 825 or Inconel 625?
A: In sulfuric acid, phosphoric acid, and mixed acid environments, Incoloy 825 is generally the better choice. Its copper and molybdenum content give it superior corrosion resistance.
Q: What are the differences between INCOLOY 825 and SS316?
A: Compared to SS316, INCOLOY 825 performs better in high-temperature and corrosive chemical or oil and gas environments, but it is more expensive and requires stricter processing control. Therefore, for mild, non-corrosive applications that do not require extremely high corrosion resistance, SS316 is a more economical option.
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