Professional Forging Manufacturer Since 1997
Full Compliance with International Standards
Custom Production for All Specifications
Serve 50+ Countries & Regions
Established in 1997, Jiangsu Liangyi Co.,Limited is a professional ISO 9001:2015 certified China-based manufacturer of 2.4606 (NiCr21Mo, NiFe30Cr21Mo3) open die forging parts and seamless rolled forged rings.provide global service to clients across North America, Europe, the Middle East, Southeast Asia, and Oceania for over 25 years.
Our 80,000 m² factory has advanced forging and inspection equipment, enabling custom production for single pieces weighing from 30 kg to 30,000 kg. With an annual manufacturing capacity of 120,000 tons, we provide production including steel melting, forging, heat treatment, and precision machining, and we strictly follow international standards such as ASTM, EN, API 6A, DIN, and JIS.
2.4858 (also known as Alloy 825, Incoloy 825, or UNS N08825) is an austenitic nickel-iron-chromium alloy, produced with optimized additions of molybdenum, copper and titanium. This advanced formulation has exceptional resistance to numerous corrosive environments, both oxidizing and reducing, making it a best choice material for demanding industrial applications in harsh working conditions. The alloy is standardized under EN 2.4858 (European), ASTM B564 UNS N08825 (American), and follow NACE MR0175/ISO 15156 for sour service applications in oil & gas.
Need a custom forging solution for your project? Send your drawing to get a free quote within 24 hours
We produce custom 2.4858 alloy forging parts in a wide range of shapes and specifications, 100% follow your drawings and technical needs:
The chemical composition of our 2.4858 (NiCr21Mo, NiFe30Cr21Mo3) forging material meets EN 2.4858, ASTM B564 international standards, to make sure consistent chemical composition and stable performance in harsh environments:
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| Element | Content Range (EN Standard) |
|---|---|
| Carbon (C) Max | 0.025% |
| Silicon (Si) Max | 0.50% |
| Manganese (Mn) Max | 1.00% |
| Phosphorus (P) Max | 0.02% |
| Sulfur (S) Max | 0.015% |
| Chromium (Cr) | 19.50% - 23.50% |
| Molybdenum (Mo) | 2.50% - 3.50% |
| Nickel (Ni) | 38.00% - 46.00% |
| Iron (Fe) | Balance |
| Titanium (Ti) | 0.60% - 1.20% |
| Copper (Cu) | 1.50% - 3.00% |
| Aluminum (Al) Max | 0.20% |
| Cobalt (Co) Max | 1.00% |
Our 2.4858 forged parts have stable mechanical properties to withstand extreme high-pressure, high-temperature and corrosive working conditions:
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| Mechanical Property | Guaranteed Standard Value |
|---|---|
| Tensile Strength (Rm) | 585 N/mm² (Min) |
| 0.2% Yield Strength (Rp0.2) | ≥ 240 N/mm² |
| Elongation (A5) | ≥ 30% |
| Hardness (HB30) | 135 - 165 HB |
Need detailed material test reports or custom mechanical requirements? Contact our technical team directly
To make sure the purity, structural integrity and fatigue resistance of the required material for critical industrial applications, we use industry-leading melting and forging processes for all 2.4858 alloy forgings:
2.4858 (NiCr21Mo) alloy forgings are widely used in harsh-environment industries. Below are examples of our applications across main markets:
We supplied custom 2.4858 forged phosphoric acid evaporator components, pickling equipment parts, and chemical processing vessels for a top chemical manufacturer in Thailand and Malaysia. The parts delivered exceptional corrosion resistance to harsh oxidizing and reducing acid environments, extending the equipment's life time by 40% compared to normal stainless steel , with no issues reported over 36 months of continuous operation.
We manufactured 2.4858 forged reactor coolant pump casings, impellers, and related critical components for a 500MW nuclear power plant in Germany and France. Produced via triple melting (VIM+ESR+VAR) for superior material purity, all components follow EU PED standards and European nuclear industry safety requirements, and passed all required non-destructive inspections with no defects.
We delivered custom NiCr21Mo forged valve bodies, casing heads, tubing spools, and wellhead flanges for a main onshore oilfield project in Saudi Arabia (UAE) and an offshore project in the United States. The forged parts maintained stable performance in high-pressure, H2S-containing corrosive wellbore environments, fully follow API 6A standards, with no leakage reported over 24 months of continuous operation.
We supplied 2.4858 forged propeller shafts, flexible joint components, and marine piping parts for a shipping company in Singapore and Australia. The alloy's better seawater corrosion resistance and anti-fatigue performance reduced maintenance frequency by 60% and extended the life of the marine propulsion systems.
Send us your drawings, specifications or project requirements — our technical team will respond within 24 hours with a detailed, competitive quote.
All our 2.4858 forged parts have strict inspections by following international standards, with complete Mill Test Certificate (MTC) EN 10204 3.1 / 3.2 provided for each order:
Our core certifications include ISO 9001:2015, and we can provide third-party inspection services from BV, SGS, TUV as your needs.
Each finished 2.4858 forged part is stamped with clear, fully traceable markings to ensure full traceability throughout the product life time:
All markings are enclosed in a frame or coated with durable white paint for long-term visibility, even in harsh storage and working environments.
2.4858 (NiCr21Mo, NiFe30Cr21Mo3) is an austenitic nickel-iron-chromium alloy containing molybdenum, copper, and titanium. This material has excellent corrosion resistance in both oxidizing and reducing environments, and is widely used in the oil and gas, nuclear power, and chemical processing industries.
We custom manufacture 2.4858 forging parts from 30 KG to 30,000KG every piece, including open die forgings, seamless rolled rings, forged bars, shafts, discs, and custom machined components, all 100% follow your drawings and technical manual.
We are ISO 9001:2015 certified and provide a Mill Test Certificate (MTC) per EN 10204 3.1 / 3.2 with each order. We also accept third-party inspections from BV, SGS, TUV, and supply complete test reports including tensile testing, UT/MT/PT non-destructive testing, chemical composition analysis, etc.
Standard lead time for custom 2.4858 forgings is 20 to 35 days, depending on the client's drawing of the parts, order quantity, and machining requirements. We can also accept urgent orders, with lead times like 15 days for simple forged components.
We provide global delivery services, North America (US, Canada), Europe (Germany, UK, France, Italy, Netherlands), Middle East (UAE, Saudi Arabia), Southeast Asia (Singapore, Malaysia, Thailand), Oceania (Australia, New Zealand), South America and more.
2.4858 (NiCr21Mo, NiFe30Cr21Mo3) matches ASTM/ASME UNS N08825 (Alloy 825 or Incoloy 825). It is covered follow ASTM B564 for nickel alloy forgings, and also meets EN 10095, VdTÜV Werkstoffblatt 432 (formerly), and other national standards. Our forgings are produced to meet any of these equivalents based on clients requirements.
2.4858 (NiCr21Mo / Alloy 825) offers good corrosion resistance in the following environments:
The molybdenum (2.5-3.5%) and copper (1.5-3.0%) additions improve resistance to reducing corrosive environments, while titanium (0.6-1.2%) stabilizes the alloy against intergranular corrosion after welding.
Yes. In addition to the standard EN 10204 3.1 Mill Test Certificate issued by our quality department we can provide EN 10204 3.2 MTC with third-party witness inspection by third inspection party including Bureau Veritas (BV), SGS, TÜV Rheinland, Lloyds Register (LR), DNV GL, and RINA. All chemical composition analysis, mechanical testing (tensile, hardness, impact), and NDT inspections (UT, MT, PT) can be witnessed and certified by your third party inspection parts, providing complete audit traceability for critical industrial projects.
We strictly follow the following internationally recognized standards for the production and quality control of our 2.4858 (NiCr21Mo) forgings. Please see the official standards bodies for more information about technical details:
Note: Jiangsu Liangyi is not affiliated with any standards body. The links above are provided for reference purposes only.
We welcome your inquiries for custom 2.4858 (NiCr21Mo, NiFe30Cr21Mo3) forging parts. Our technical team will provide you with professional technical advice and a quotation within 24 hours. We can deliver high-quality, certified forging products for your global projects.