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Location: HOME > PRODUCTS > High-quality alloy > Corrosion-resistant Alloy > Incoloy 825 Ni-Fe-Cr corrosion-resistant Alloy

Incoloy 825 Ni-Fe-Cr corrosion-resistant Alloy

Incoloy 825 is a Ni-Fe-Cr corrosion-resistant alloy with added molybdenum, copper, and titanium for composite strengthening. It has excellent resistance to stress corrosion, pitting corrosion, crevice corrosion, and acid and alkali corrosion. It is stable in both oxidizing and reducing environments and is a highly versatile corrosion-resistant material in the chemical, marine, oil and gas, and nuclear power industries.

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Name	Corrosion-resistant Alloys
Thickness	Common thickness	0.5–6 mm (for stamping, bending, household appliances / automotive parts)
	Medium-thick specification	6–20 mm (for steel structures, mechanical bases)
	Thick specification	20–100 mm (for heavy-duty frames, pressure vessels)
Tolerance	±0.02–±0.10 mm (varies with thickness)
Width	1000、1219、1250、1500、1800、2000
Length	plate/sheet:2000、2500、3000、6000、12000mm	Coil:Single roll weight: 8 to 25 tons
Material Standards	AISI, ASTM, ASME, DIN, BS, EN, ISO, JIS, SAE, etc.
Delivery Condition	AR / As Rolled ，TMCP / Thermo-Mechanical Controlled Process ，N / Normalized，NR / Normalized Rolled ，CR / Controlled Rolling
Surface treatment	Pickling and passivation, sandblasting, polishing (including mechanical polishing and chemical polishing, achieving a surface finish of Ra≤0.8μm), annealing.
Delivery status	Solution-treated and aged (ST) state, cold-rolled/hot-rolled state
Delivery Time	within 5-10 days(Special specifications will take 15 to 20 days)

Incoloy 825 is a Ni-Fe-Cr corrosion-resistant alloy, reinforced with molybdenum, copper, and titanium. It possesses excellent resistance to stress corrosion, pitting corrosion, crevice corrosion, and acid and alkali corrosion. It exhibits stability in both oxidizing and reducing environments, making it a highly versatile corrosion-resistant material used in chemical, marine, oil and gas, and nuclear power industries.

Common Applications:

Chemical Equipment: Sulfuric acid, phosphoric acid, pickling equipment, heat exchangers, reactors, pipe fittings

Oil and Gas Extraction: Downhole pipes, Christmas trees, components for acidic gas (H₂S/CO₂/Cl⁻) conditions

Marine Engineering: Seawater cooling systems, desalination plants, offshore platform structures

Energy & Nuclear Power: Nuclear fuel reprocessing, steam generators, flue gas desulfurization systems

Environmental Protection & Pickling: Pickling tanks, pickling fixtures, incinerator components, waste gas treatment equipment

United States UNS/ASTM	China GB	Germany W.Nr./DIN	United Kingdom BS	France AFNOR	Japan JIS
N08825	NS142	2.4858	NA16	NC21FeDu	NCF825
Incoloy 825	0Cr21Ni42Mo3Cu2Ti	NiCr21Mo	NA16	NC21FeDu	NCF825

Chemical composition (mass fraction, %)

Element	Ni	Cr	Fe	Mo	Cu	Ti	C	Mn	Si	P	S
Content	38.0~46.0	19.5~23.5	Margin	2.5~3.5	1.5~3.0	0.6~1.2	≤0.05	≤1.0	≤0.5	≤0.03	≤0.015

Mechanical properties (inspection standards)

Tensile strength Rm	Proportional limit Rp0.2	Strain at break A5	Density	Melting point range
≥586 MPa	≥240 MPa	≥30%	8.14 g/cm³	1370-1400℃

Advantages

Comprehensive corrosion resistance: Resistant to sulfuric acid, phosphoric acid, seawater, and chloride ion stress corrosion, far superior to stainless steel.

Resistant to localized corrosion: Excellent resistance to pitting corrosion, crevice corrosion, and stress corrosion cracking (SCC).

High and low temperature adaptability: Good high-temperature oxidation resistance and stable low-temperature toughness.

Good machinability and weldability: Can be cold-formed and hot-formed, with excellent weldability and low susceptibility to hot cracking.

Titanium stabilization: Reduces the tendency for intergranular corrosion, resulting in minimal decrease in corrosion resistance after welding.

High cost-effectiveness: Corrosion resistance close to nickel-based superalloys, but at a lower cost.

Disadvantages

Limited resistance to strong corrosion: Weaker resistance to high-concentration hydrochloric acid and hydrofluoric acid than Hastelloy C-276/C-22.

Moderate high-temperature strength: Lower high-temperature creep strength than Inconel series high-temperature alloys.

Significant work hardening: Easily hardens during machining, requiring specific tooling.

Slightly weaker oxidation resistance: Less stable than at 800H after long-term use above 800℃.

Hot-selling products/Standards

Bars: ASTM B425

Plates/Strips: ASTM B424

Seamless tubes: ASTM B423, ASTM B163 Forgings / Flanges: ASTM B564 Pipe Fittings: ASTM B366

Documentation and Certification

Material Certificate: Mill Test Certificate (MTC), conforming to GB/ASTM/EN standards

Test Report: Chemical composition, mechanical properties, non-destructive testing (UT/MT/PT)

Packaging and Transportation

Rust Prevention: Passivation / Pickling / Rust-preventive oil + moisture-proof paper

Crater: Solid wood pallet / iron box, moisture-proof, impact-resistant

Transportation: Suitable for sea/air freight, marked with moisture-proof, shock-proof, high-end alloy

Payment Methods

Flexible payment terms available: T/T and L/C. For new clients, 30% advance payment for production, balance against copy of B/L. L/C is acceptable for large & regular orders to secure both parties.

Previous:Incoloy 800/800H Fe-Ni-Cr Heat-resistant and corrosion-resistant alloy

Next:Monel 400 Ni-Cu Single-Phase Solid Solution Alloy

Warehousing Management

Before each batch of steel leaves the factory, a complete process inspection is strictly carried out. From chemical composition, mechanical properties to dimensional tolerance and surface quality, each item is carefully checked to ensure compliance with national standards and export regulations. At the same time, the quantity, packaging and rust prevention treatment are also verified. An original factory warranty certificate is attached, guaranteeing the quality. Before shipment, inspection photos are provided. Any non-compliant items will not be released, and the quality is fully controllable throughout the process. This ensures your overseas purchasing is safe and worry-free.

All items are visually inspected before delivery. No cracks, deformation, rust, scratches or cutting marks are allowed; edges must be smooth. Only visually sound products will be shipped.

Thickness, width, length, wall thickness, outer diameter have been measured. Straightness, curvature, torsion, diagonal tolerance all meet the corresponding tolerance requirements.

Quality inspection includes: mechanical property tests (yield strength, tensile strength), elongation rate, impact energy, hardness testing, chemical composition testing, process performance testing, etc.

Inspection according to packaging requirements: secure binding, moisture-proof film, rust-proof paper, export fumigation/fumigation-free wooden crates, shipping marks, gross weight, net weight, etc.

We will provide full reception services to support the customers' on-site inspection of the goods.

Hot Rolling Production Line

Cold rolling precision processing

Cold drawing/cold rolling line

Hot Rolling Production Line

Hot rolling production line (producing hot-rolled coils/medium-thick plates, thickness 2–60mm)

Cold rolling precision processing

(Producing ultra-thin / high-precision / shiny panels, with thickness ranging from 0.1 to 3mm, for high-end products)
Cold drawing/cold rolling line

(High-precision cold-drawn round steel, square steel, hexagonal steel, and special-shaped bars)

Cold drawing/cold rolling line

(High-precision cold-drawn round steel, square steel, hexagonal steel, and special-shaped bars)

Warehousing Management

A ten-thousand-ton standardized warehouse with grid-based zoning and system positioning enables rapid material retrieval and reduces the time spent searching for materials.

Inbound inspection: Verify the physical items against the inbound form, inspect the appearance, dimensions, and labels. Once confirmed to be correct, the materials are entered into the ERP system and processed for storage.

Logistics and Global Delivery: Self-operated fleet + contracted logistics partners; expedited service available for urgent orders.

International Shipping: Supports FOB, CIF, DDP, and other trade terms, covering 100+ countries and regions.

Process: Booking → Trucking → Customs Declaration → Loading onto Ship/Aircraft → Bill of Lading Issuance → Document Delivery → Destination Port Customs Clearance (Optional) → Last-Mile Delivery.

Provides door-to-door one-stop logistics with full tracking to ensure safe and timely arrival of goods.

After-Sales Service and Traceability: Delivery receipts, logistics information, and quality inspection documents are sent to customers within 24 hours of shipment.

Established a full product lifecycle traceability system, allowing tracking of production, quality inspection, warehousing, and transportation records.

Follow-up inspection within 72 hours of arrival; rapid response and handling of quality issues; assistance in resolving customs clearance issues for foreign trade orders.

Packaging Method