Incoloy 825 Forging Parts | ASTM B424 Alloy 825 / UNS N08825 China Manufacturer
Incoloy 825 Forging Parts Product Image
Why Choose Our Incoloy 825 Forgings
Established in 1997, Jiangsu Liangyi is professional ISO 9001:2015 certified manufacturer of Incoloy 825 forging parts.Our Factory covers an area of 80,000㎡ with original fixed asset up to 40 million USD. We have a 120,000 tons annual manufacturing capacity. We can supply fully custom from steel melting, forging, heat treatment to precision machining, with products exported to over 50 countries worldwide.
- Single piece weight: 30KGS to 30,000KGS
- Accordance with ASTM B424, EN, DIN, API 6A standards
- Advanced 6300T hydraulic press & seamless rolling equipment
- Full NDT inspection & EN 10204 3.1 certification
- Fully custom according to your drawings & technical manuals
What is Incoloy 825 (Alloy 825 / UNS N08825)?
Incoloy 825 is a nickel-chromium-iron solid solution strengthened alloy, with a nominal chemical composition of 42% nickel, 21% chromium, 22% iron, plus optimized additions of molybdenum, titanium, and copper. This formula makes the alloy get great corrosion resistance in both oxidizing and reducing environments, good resistance to stress corrosion cracking, and stable mechanical properties at room and elevated temperatures,making it an ideal material for heavy-duty forging parts in harsh working conditions.
Incoloy 825 has corrosion resistant against sulfuric acid, phosphoric acid, hydrogen sulfide (H₂S), nitric acid, and chloride-containing media. Its resistance to hydrogen sulfide and CO₂ corrosion makes it fully qualified for NACE MR0175 sour service in oil and gas uses. The alloy is shipped after solution annealing heat treatment (typically 940–980‽C, water quench) to get good corrosion resistance and mechanical properties.
International Names for Incoloy 825:
| Standard System | Name / Grade | Standard Number |
|---|---|---|
| UNS (USA) | N08825 | ASTM B424 |
| DIN / EN (Europe) | 2.4858 / NiCr21Mo | DIN 17744 / EN 10272 |
| BS (UK) | NA16 | BS 3076 |
| GOST (Russia) | ХН28М2.5Т | GOST 10994 |
| ISO | NW8825 | ISO 9723 / ISO 9724 |
Custom Incoloy 825 Forging Products We Supply
We supply a full range of custom Incoloy 825 forging products, with flexible size and custom shape to meet your project requirements, according to NACE MR0175 sour service standard for oil and gas industry. Our main Alloy 825 forging products include:
Incoloy 825 Forged Bars & Shafts
Incoloy 825 forged round bars, square bars, flat bars, rectangular bars, step shafts, gear shafts, turbine shafts, and custom-shaped rods. All produced are by open die forging or closed die forging process depending on geometry and tolerance requirements.
Alloy 825 Seamless Rolled Forged Rings
UNS N08825 seamless ring rolling forgings: flanged rings, gear rings, slewing bearing rings, contoured rolled rings, and custom forging rings. Ring rolling process can get better grain flow structure and mechanical performance compared to cut rings.
Incoloy 825 Forged Sleeves, Pipes & Hollow Parts
Alloy 825 forged hubs, housings, shells, sleeves, bushes, casings, hollow bars, pipe tubes, tubing shells, and pressure vessel parts
UNS N08825 Forged Discs, Plates & Blocks
Incoloy 825 forged discs, disks, blocks, plates, tube sheets, baffle plates, and custom heavy-section forgings
Incoloy 825 Forged Valve & Pump Parts
UNS N08825 forged valve bodies, valve balls, valve bonnets, valve stems, valve seat rings, pump casings, pump impellers, pump shafts, pump housings, and wear rings for ball valves, gate valves, check valves, butterfly valves, globe valves — all according to NACE MR0175 for sour service and corrosive fluid uses.
Custom Alloy 825 Forged Fittings & Flanges
Incoloy 825 forged flanges, double studded adapter flanges, swept branches, saddles, transition cones, wellhead parts, and custom pressure parts
Chemical Composition of Incoloy 825 Alloy (ASTM B424)
The chemical composition of our Incoloy 825 forged products strictly in accordance with ASTM B424 and EN international standards, rang is as below:
| Element | Content Range (ASTM B424) |
|---|---|
| Nickel (Ni) | 38.0 - 46.0% |
| Iron (Fe) | 22.0% min. |
| Chromium (Cr) | 19.5 - 23.5% |
| Molybdenum (Mo) | 2.5 - 3.5% |
| Copper (Cu) | 1.5 - 3.0% |
| Titanium (Ti) | 0.6 - 1.2% |
| Carbon (C) | 0.05% max. |
| Manganese (Mn) | 1.0% max. |
| Sulfur (S) | 0.03% max. |
| Silicon (Si) | 0.5% max. |
| Aluminum (Al) | 0.2% max. |
Mechanical Properties of Annealed Incoloy 825 Forgings
Our UNS N08825 forging parts are shipped in the annealed condition, their mechanical properties meet or exceed ASTM B424 standards:
| Property | Metric Value (Min.) | Imperial Value |
|---|---|---|
| Tensile Strength | 690 MPa | 100 ksi |
| Yield Strength (0.2% Offset) | 320 MPa | 46 ksi |
| Elongation at Break | 45% | 45% |
Physical Properties of Incoloy 825 (UNS N08825)
The following physical properties are for Incoloy 825 in the annealed condition, as referenced in ASTM B424 and material data sheets:
| Physical Property | Value | Unit |
|---|---|---|
| Density | 8.14 | g/cm³ (0.294 lb/in³) |
| Melting Range | 1370 – 1400 | ‽C (2500 – 2550 ℉) |
| Elastic Modulus (RT) | 196 | GPa (28.4 × 10⁶ psi) |
| Thermal Conductivity (100‽C) | 11.1 | W/(m·K) |
| Thermal Expansion Coeff. (20–100‽C) | 14.0 × 10⁻⁶ | /‽C |
| Electrical Resistivity | 1.13 | μΩ·m |
| Specific Heat Capacity | 440 | J/(kg·K) |
| Magnetic Permeability (RT) | ≤ 1.005 | μr (Non-magnetic) |
Heat Treatment Ways for Incoloy 825 Forgings
Jiangsu Liangyi will control solution annealing heat treatment for all incoloy 825 forging parts to get good corrosion resistance and make sure the mechanical properties will be accordance with ASTM B424:
| Heat Treatment Type | Temperature Range | Cooling Method | Purpose |
|---|---|---|---|
| Solution Annealing (Standard) | 940 – 980‽C (1725 – 1795℉) | Water Quench / Rapid Air Cool | Optimize corrosion resistance, relieve stress |
| Solution Annealing (High Temp) | 1010 – 1175‽C (1850 – 2150℉) | Water Quench | Full solution treatment, maximum ductility |
| Stress Relief | 590 – 650‽C (1095 – 1200℉) | Air Cool | Reduce residual forging stress |
Industries & Global Project Cases of Incoloy 825 Forging Parts
Thanks to its good performance, Incoloy 825 forging parts are widely used in the following industries and scenarios, with our products exported to over 50 countries including USA, Canada, Germany, Norway, UAE, Saudi Arabia, Singapore, Malaysia, and Australia:
- Boiler, heat exchanger, pressure vessel, reactor and heater parts for power generation industry
- Oil and gas extraction and processing equipment, wellhead Christmas trees, casing heads for Middle East sour gas projects
- Industrial valve parts for ball valves, check valves, gate valves, butterfly valves and cryogenic valves
- Nuclear power reactor coolant pump systems, impellers, casings and seal chambers
- Turbomachinery, gas and steam turbine components, centrifugal compressor impellers
- Chemical processing equipment, sulfuric acid piping and vessels, pickling equipment for Southeast Asia chemical plants
- Marine engineering, propeller shafts, exhaust systems and seawater resistant parts for European shipbuilding projects
- Food processing, water treatment, electrostatic precipitator and environmental protection equipment
Actual Global Project Cases of Our Alloy 825 Forgings
Below are main cases in which our products work well in many uses:
Middle East Sour Gas Wellhead Project (UAE & Saudi Arabia)
We supplied UNS N08825 forged casing heads, tubing spools, and wellhead Christmas tree parts to a big sour gas field in the Middle East. The parts have good resistance to H₂S and CO₂ corrosion, they have been working stably in high-pressure, high-temperature (HPHT) downhole environments for over 6 years, in full accordance with the strict NACE MR0175 sour service standard.
Southeast Asia Sulfuric Acid Processing Plant Project (Malaysia & Indonesia)
We provided custom Incoloy 825 forged pipes, vessels, and pickling tank heaters for a large sulfuric acid production facility in Southeast Asia. These Alloy 825 forgings had good corrosion resistance in concentrated sulfuric acid and phosphoric acid environments, they reduced the frequency of equipment maintenance by 40% and extended the service life of the production line by 3x compared to traditional stainless steel parts.
China Nuclear Power Reactor Coolant Pump Project
Our UNS N08825 forged pump casings, impellers, and containment seal chambers were used in the coolant pump system of a 1000MW nuclear power reactor in China. The Incoloy 825 forgings passed strict nuclear-grade quality inspections, and had great mechanical properties and radiation resistance, which make sure the reactor's main coolant system works safely and stably over a long period of time.
Europe Marine Engineering Cruise Ship Project (Germany & Norway)
We supplied Alloy 825 forged propeller shafts, marine exhaust system parts, and expansion bellows to a European luxury cruise ship project. Our Incoloy 825 forgings had great resistance to seawater corrosion and stress corrosion cracking, they had been working in the hard marine environments for a long time, and got the strict DNV marine industry certification.
North America Waste Heat Recovery Power Plant Project (USA & Canada)
Our Incoloy 825 forged tube sheets, baffles, and pressure vessel nozzles were used in a waste heat recovery power plant in North America. The UNS N08825 forgings worked well in high-temperature flue gas and corrosive ash environments, they increased the efficiency of system's heat exchange by 12% and reduced annual downtime for maintenance by 25%.
Strict Quality Control & Non-Destructive Testing (NDT)
We check every Incoloy 825 forging part from testing the raw materials to the final delivery of the finished products. Non-destructive testing (NDT) to ensure zero defects and per international standards. :
- 100% ultrasonic inspection (UT) on all bars with diameter above 40mm, according to EN 10308 Type 1a and 1c standards. Acceptance criteria: quality class 3 for sizes ≤200mm, quality class 4 for sizes >200mm, decision limit of 3dB for back wall echo loss and maximum 10mm reflector length.
- Magnetic particle inspection (MT) will be done on axial and radial bores, as well as cross-section transitions, and all surface areas, in accordance to with clients' requirements.
- When the final products are ready, we will inspect all sizes to make sure they are within tolerances.
- Chemical composition analysis, mechanical property testing, and metallographic inspection for each heat batch.
- Visual inspection: finished forgings are straight and without internal and surface defects (cracks, piping, scabs, laps, hairline cracks, twists, bends). Minor dents, roll marks and scratches are allowed only if their depth does not exceed half of the specified tolerance limits.
🔥 Welding of Incoloy 825 Forging Parts
Incoloy 825 (UNS N08825) forgings can be welded by standard austenitic welding process. The following are our main welding guidelines for forgings:
| Welding Parameter | Recommendation |
|---|---|
| Recommended Filler Metal | ERNiCrMo-3 (Inconel 625 filler) per AWS A5.14 |
| Welding Processes | GTAW (TIG), GMAW (MIG), SAW, SMAW |
| Preheat | Not required for base metal; avoid excessive heat input |
| Interpass Temperature | Max 150‽C (300℉) to prevent sensitization |
| Post-Weld Heat Treatment | Optional: solution anneal at 940–980‽C + water quench for maximum corrosion resistance in severe service |
| Surface Preparation | Degrease and clean; avoid iron contamination; use dedicated stainless steel brushes |
We can provide forgings with machined weld bevels (single V-shaped, double V-shaped, J-shaped bevels) according to customers' drawings or AWS D1.6 / ASME IX standards.
Certification & Delivery Documentation
All our UNS N08825 forging parts can be shipped with full set of certification and documentation to meet your requirements. We provide an EN 10204 3.1 inspection certification in English in duplicate for all Incoloy 825 forged parts, prior to or with delivery. EN 10204 3.2 certification is also available upon request. The certification includes the following full data:
- Identification number and order number of the forging parts
- Material name (Incoloy 825 / Alloy 825 / UNS N08825) and applicable standards
- Heat number, full heat analysis (including trace elements) and melting process of each forging
- Number of forgings per ingot, ingot weight, and L/D ratio
- Forging reduction ratio (Amax/Afinal at the greatest body diameter) of each product
- Full heat treatment records: cooling method, actual measured temperatures, holding times, cooling conditions and cooling rates, including all reheat treatments
- Mechanical test results, with clear indication of specimen sampling location
- Residual stress measurement results (if need)
- Ultrasonic and magnetic particle inspection results, according to clients' requirements
- Magnetic properties test results (if required)
- Full size inspection data sheet for each forging
Incoloy 825 vs Other Nickel Alloys: Which one to Choose?
Choosing the right nickel alloy for your project requires understanding main differences. Below is a comparison of Incoloy 825 (UNS N08825) with commonly specified alternatives:
| Property | Incoloy 825 (N08825) | Inconel 625 (N06625) | Hastelloy C276 (N10276) |
|---|---|---|---|
| Ni Content | 38–46% | 58% min | 57% min |
| NACE MR0175 | ✓ Compliant | ✓ Compliant | ✓ Compliant |
| Tensile Strength | 690 MPa min | 827 MPa min | 690 MPa min |
| Chloride SCC Resistance | Excellent | Good | Good |
| Relative Cost | Medium | High | High |
| Best Uses | Oil & gas, acid environments | Inconel 625 Forgings — high-temp, aerospace, seawater | Hastelloy C276 Forgings — bad chemical environments |
Summary: Incoloy 825 offers the best cost-performance in acidic gas, phosphoric acid and moderate chloride environments. Contact our engineers for free material choice advice for your specific uses.
Get Free Material Choice Advice →📦 Delivery, Packaging & Lead Time
Our Incoloy 825 forging delivery process is special for global B2B buyers:
- Standard lead time: 20–35 working days from order confirmation
- Rush orders: 10–15 days for simple geometries orders
- Packaging: Seaworthy wooden cases with VCI anti-rust film for ocean freight
- Shipping terms: FOB Tianjin / Shanghai; CIF and DDP upon request
- Documentation: Mill Test Certificate per EN 10204 3.1/3.2, packing list, commercial invoice, COO
- Third-party inspection: SGS, Bureau Veritas (BV), TÜV, Intertek are acceptable
- Payment terms: T/T (Wire Transfer), L/C (Letter of Credit at sight), Western Union — USD, EUR, CNY accepted
- Trade terms: EXW, FOB, CIF, DDP, CPT — negotiable based on destination and order value
- HS Code reference: 7326.90 (other forged steel articles) / 7506.20 (nickel alloy bars & rods) — check with your local custom
Frequently Asked Questions About Incoloy 825 Forgings
Get Your Custom Incoloy 825 Forging Parts Free Quote Today
As a professional Incoloy 825 forging manufacturer in China with over 27 years of industry experience, we are providing high-quality, custom Alloy 825 forgings to clients worldwide. Contact us now to discuss your project requirements and get a competitive quote within 24 hours.
Inquiry Email: [email protected]
📞 Phone/WhatsApp: +86-13585067993