Shanxi Zhongcheng Metal Co., Ltd.
| Payment Terms | T/T，D/P，D/A，Western Union，PayPal |
| Supply Ability | 10000tons |
| Delivery Time | 15-25days |
| Packaging Details | Wooden pallets, wooden crates, woven bags, etc. |
| Country of Origin | MADE IN CHAINA |
| Brand | Baosteel，TISCO |
| Certifications | ISO/EN 10204 Type 3.1 / 3.2 available |
| Grade | Incoloy 800 / Incoloy 800H / Incoloy 800HT / Incoloy 825 / Hastelloy C-276 / Hastelloy C-22 / Inconel 625 / Inconel 718 |
| MOQ | 100kg |
| Packaging | Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag |
| Supply Capacity | 10000tons |
| Brand Name | Baosteel，TISCO |
| Model Number | Incoloy 800 / Incoloy 800H / Incoloy 800HT / Incoloy 825 / Hastelloy C-276 / Hastelloy C-22 / Inconel 625 / Inconel 718 |
| Certification | EN 10204 Type 3.1 / 3.2 available |
| Place of Origin | MADE IN CHAINA |
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Product Specification
| Payment Terms | T/T，D/P，D/A，Western Union，PayPal | Supply Ability | 10000tons |
| Delivery Time | 15-25days | Packaging Details | Wooden pallets, wooden crates, woven bags, etc. |
| Country of Origin | MADE IN CHAINA | Brand | Baosteel，TISCO |
| Certifications | ISO/EN 10204 Type 3.1 / 3.2 available | Grade | Incoloy 800 / Incoloy 800H / Incoloy 800HT / Incoloy 825 / Hastelloy C-276 / Hastelloy C-22 / Inconel 625 / Inconel 718 |
| MOQ | 100kg | Packaging | Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag |
| Supply Capacity | 10000tons | Brand Name | Baosteel，TISCO |
| Model Number | Incoloy 800 / Incoloy 800H / Incoloy 800HT / Incoloy 825 / Hastelloy C-276 / Hastelloy C-22 / Inconel 625 / Inconel 718 | Certification | EN 10204 Type 3.1 / 3.2 available |
| Place of Origin | MADE IN CHAINA | ||
| High Light | UNS N08825 Incoloy 825 Tubing ，Incoloy 825 Tubing Seamless | ||
UNS N08825 is a nickel-iron-chromium alloy with significant additions of molybdenum, copper, and titanium. This austenitic nickel-iron-chromium alloy is specifically designed to provide exceptional resistance to both reducing and oxidizing acids, as well as stress-corrosion cracking and pitting in chloride-containing environments.
What sets UNS N08825 apart is its stabilized structure – the addition of titanium prevents intergranular corrosion after welding, making it suitable for fabricated equipment without post-weld heat treatment. The alloy also contains copper, which provides outstanding resistance to sulfuric and phosphoric acids. UNS N08825 maintains excellent mechanical properties from cryogenic temperatures up to 540°C (1000°F).
| Parameter | Details |
|---|---|
| Standard | ASTM B423 (Seamless Tube), ASTM B163 (Heat Exchanger Tube), ASTM B424 (Plate/Sheet), ASME SB423 |
| Grade / UNS | Incoloy 825 / UNS N08825 / W.Nr. 2.4858 |
| Type | Seamless tube / Welded tube (ERW / EFW) |
| Outer Diameter | 6.0 mm – 610 mm (1/8″ – 24″) |
| Wall Thickness | 0.5 mm – 50 mm (SCH 5S – XXS) |
| Length | 6 m / 9 m / 12 m, or random lengths |
| Process | Cold drawn / Cold rolled (seamless); Plate rolled (welded) |
| Finish | Annealed & pickled / Bright annealed |
| Ends | Plain end / Beveled end / Threaded |
| Packaging | Hexagonal bundles + plastic end caps + seaworthy wooden crates or pallets |
The chemical composition of UNS N08825 complies with ASTM B425, B424, and B423 standards.
| Element | Content (%) | Role |
|---|---|---|
| Nickel (Ni) | 38.0 – 46.0 | Provides SCC resistance and austenitic stability |
| Iron (Fe) | ≥ 22.0 (balance) | Base element |
| Chromium (Cr) | 19.5 – 23.5 | Enhances oxidation and corrosion resistance |
| Molybdenum (Mo) | 2.5 – 3.5 | Improves pitting and crevice corrosion resistance |
| Copper (Cu) | 1.5 – 3.0 | Provides resistance to reducing acids (sulfuric/phosphoric) |
| Titanium (Ti) | 0.6 – 1.2 | Stabilizes against intergranular attack |
| Carbon (C) | ≤ 0.05 | Minimized to prevent sensitization |
| Manganese (Mn) | ≤ 1.00 | Aids in hot workability |
| Silicon (Si) | ≤ 0.50 | Improves oxidation resistance |
| Aluminum (Al) | ≤ 0.20 | Deoxidizer |
| Sulfur (S) | ≤ 0.03 | Controlled for hot workability |
| Phosphorus (P) | ≤ 0.03 | Minimized to maintain ductility |
Room Temperature Properties (Annealed Condition)
| Property | Metric (MPa) | Imperial (ksi) |
|---|---|---|
| Tensile Strength (Rm) | ≥ 586 | ≥ 85 |
| Yield Strength 0.2% Proof (Rp0.2) | ≥ 241 | ≥ 35 |
| Elongation (A) | ≥ 30% | ≥ 30% |
| Density | 8.14 g/cm³ | 0.294 lb/in³ |
| Melting Point | 1370 – 1400°C | 2500 – 2550°F |
| Modulus of Elasticity | 196 GPa | 28.4 x 10³ ksi |
| Environment | Performance |
|---|---|
| Sulfuric acid (H₂SO₄) | Excellent – up to 40% concentration at boiling |
| Phosphoric acid (H₃PO₄) | Excellent – industry standard for fertilizer production |
| Nitric acid (HNO₃) | Good to excellent |
| Hydrochloric acid (HCl) | Good in dilute concentrations (<10%) |
| Organic acids | Excellent (acetic, formic, citric) |
| Chlorides (NaCl) | Good pitting resistance; excellent SCC resistance |
| Seawater | Moderate – good for many applications |
| Caustic solutions | Good |
UNS N08825 offers good weldability with important advantages:
| Property | Detail |
|---|---|
| Post-weld heat treatment | Not required for corrosion resistance (titanium stabilized) |
| Sensitization risk | Very low – titanium prevents carbide precipitation |
| Recommended methods | TIG, MIG, SMAW, SAW |
| Filler metal | Matching UNS N08825 filler (ERNiCrMo-3 or ENiCrMo-3) |
| Preheating | Generally not required |
| Interpass temperature | Maintain below 150°C (300°F) |
Looking for a reliable supplier of UNS N08825 nickel-iron-chromium alloy tubes?
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller
Year Established:
2010
Total Annual:
20000000-50000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
Zhongcheng Metal: A professional supplier of stainless steel tubes and plates. We export to 11 countries, including Germany, the United States, the United Kingdom, and Japan. By adopting advanced manufacturing processes and implementing comprehensive 5S management across our operations, we provide... Zhongcheng Metal: A professional supplier of stainless steel tubes and plates. We export to 11 countries, including Germany, the United States, the United Kingdom, and Japan. By adopting advanced manufacturing processes and implementing comprehensive 5S management across our operations, we provide...
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