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UNS N08825 Alloy Incoloy 825 Tubing Seamless For Oil And Gas
UNS N08825 Alloy Incoloy 825 Tubing Seamless For Oil And Gas
Specifications
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
MOQ :
100kg
Price :
Negotiable (Request a Quote)
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
Description

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).

Specifications & Dimensions
ParameterDetails
StandardASTM B423 (Seamless Tube), ASTM B163 (Heat Exchanger Tube), ASTM B424 (Plate/Sheet), ASME SB423
Grade / UNSIncoloy 825 / UNS N08825 / W.Nr. 2.4858
TypeSeamless tube / Welded tube (ERW / EFW)
Outer Diameter6.0 mm – 610 mm (1/8″ – 24″)
Wall Thickness0.5 mm – 50 mm (SCH 5S – XXS)
Length6 m / 9 m / 12 m, or random lengths
ProcessCold drawn / Cold rolled (seamless); Plate rolled (welded)
FinishAnnealed & pickled / Bright annealed
EndsPlain end / Beveled end / Threaded
PackagingHexagonal bundles + plastic end caps + seaworthy wooden crates or pallets
Chemical Composition

The chemical composition of UNS N08825 complies with ASTM B425, B424, and B423 standards.

ElementContent (%)Role
Nickel (Ni)38.0 – 46.0Provides SCC resistance and austenitic stability
Iron (Fe)≥ 22.0 (balance)Base element
Chromium (Cr)19.5 – 23.5Enhances oxidation and corrosion resistance
Molybdenum (Mo)2.5 – 3.5Improves pitting and crevice corrosion resistance
Copper (Cu)1.5 – 3.0Provides resistance to reducing acids (sulfuric/phosphoric)
Titanium (Ti)0.6 – 1.2Stabilizes against intergranular attack
Carbon (C)≤ 0.05Minimized to prevent sensitization
Manganese (Mn)≤ 1.00Aids in hot workability
Silicon (Si)≤ 0.50Improves oxidation resistance
Aluminum (Al)≤ 0.20Deoxidizer
Sulfur (S)≤ 0.03Controlled for hot workability
Phosphorus (P)≤ 0.03Minimized to maintain ductility
Mechanical Properties

Room Temperature Properties (Annealed Condition)

PropertyMetric (MPa)Imperial (ksi)
Tensile Strength (Rm)≥ 586≥ 85
Yield Strength 0.2% Proof (Rp0.2)≥ 241≥ 35
Elongation (A)≥ 30%≥ 30%
Density8.14 g/cm³0.294 lb/in³
Melting Point1370 – 1400°C2500 – 2550°F
Modulus of Elasticity196 GPa28.4 x 10³ ksi
Corrosion Resistance Highlights
EnvironmentPerformance
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 acidsExcellent (acetic, formic, citric)
Chlorides (NaCl)Good pitting resistance; excellent SCC resistance
SeawaterModerate – good for many applications
Caustic solutionsGood
Weldability

UNS N08825 offers good weldability with important advantages:

PropertyDetail
Post-weld heat treatmentNot required for corrosion resistance (titanium stabilized)
Sensitization riskVery low – titanium prevents carbide precipitation
Recommended methodsTIG, MIG, SMAW, SAW
Filler metalMatching UNS N08825 filler (ERNiCrMo-3 or ENiCrMo-3)
PreheatingGenerally not required
Interpass temperatureMaintain below 150°C (300°F)
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UNS N08825 Alloy Incoloy 825 Tubing Seamless For Oil And Gas

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Product Detail
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
MOQ :
100kg
Price :
Negotiable (Request a Quote)
Contact Supplier
UNS N08825 Alloy Incoloy 825 Tubing Seamless For Oil And Gas

Shanxi Zhongcheng Metal Co., Ltd.

Verified Supplier
1 Years
Shaanxi
Since 2010
Business Type :
Manufacturer, Distributor/Wholesaler, Importer, Exporter, Trading Company, Seller
Main Products :
Colored Stainless Steel Sheet, Incoloy 800, Stainless Steel Pipe
Total Annual :
20000000-50000000
Employee Number :
50~100
Certification Level :
Verified Supplier
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