2.4854 (NiFe33Cr25Co) Forging Parts | Heat Resistant Alloy Forgings Manufacturer

Professional 2.4854 (NiFe33Cr25Co) Forging Parts Manufacturer in China

Jiangsu Liangyi Co., Limited is anISO 9001:2015 certified professional manufacturer of 2.4854 (NiFe33Cr25Co) open die forging parts and seamless rolled forged rings, located in Jiangyin, Jiangsu Province, China.With over 25 years of forging experience since 1997, we supply high-performance 2.4854 alloy forgings to customers in more than 50 countries, including the EU, Middle East, Southeast Asia, Australia and South America. Our full production line includes high-grade alloy melting, precision forging, standardized heat treatment and CNC machining. We strictly follow EN, ASTM, ASME, API and DIN international standards, as well as your custom drawings and technical requirements.We can produce custom 2.4854 forged parts weighing from 30kg up to 30 tons per piece, and they are used for the toughest high-temperature, high-pressure and highly corrosive industrial uses.

Full Range of 2.4854 (NiFe33Cr25Co) Forged Product Forms

We produce a complete portfolio of NiFe33Cr25Co forging products with full dimensional customization, including but not limited to:

2.4854 Forged Bars & Rods

• 2.4854 forged round bars, square bars, flat bars, rectangular bars and precision rods
• NiFe33Cr25Co step shafts, gear shafts, turbine shafts, valve stems and custom forged shafts
• The max forging diameter is up to 2000mm, the max length is up to 15 meters, single-piece weight is up to 30 tons

2.4854 Seamless Rolled & Forged Rings

• NiFe33Cr25Co seamless rolled rings, contoured rings, bearing races, seal rings and valve seat rings
• 2.4854 forged rings for turbine, bearing, valve and pressure vessel applications, the max diameter is up to 6 meters
• EN 10204 3.1B material test certificate is supplied as standard; EN 10204 3.2 third-party inspection is available on customer request (at additional cost, subject to scheduling with approved TPI body)

Custom 2.4854 Hollow & Complex Forged Components

• NiFe33Cr25Co forged hubs, housings, shells, sleeves, bushes, cases and seamless hollow bars
• 2.4854 forged discs, blocks, plates, tube sheets, baffles, flanges and pressure vessel parts
• 2.4854 (NiFe33Cr25Co) custom forged parts fully machined to customer drawings, with 100% non-destructive testing

Core Performance & Advantages of 2.4854 (NiFe33Cr25Co) Heat Resistant Alloy

2.4854 (NiFe33Cr25Co) is a solid solution reinforced Fe-Ni-Cr heat resistant super alloy that is used for extreme high-temperature, carburizing and sulfidizing environments. Its main advantages include:

• Exceptional High-Temperature Strength: Significantly higher creep and rupture strength than common Fe-Ni-Cr alloys (Alloy 330, Alloy 800H) at temperatures up to 1095°C (2000°F), even outperforming many Ni-Cr alloys in long-term high-temperature service
• Superior Corrosion Resistance: Excellent resistance to combined carburizing and sulfidizing environments, suitable for harsh petrochemical, refining and waste incineration scenarios; oxidation resistance comparable to premium high-temperature alloys
• Excellent Structural Stability: Stable mechanical properties and metallographic matrix under long-term high-temperature operation, no brittle phase precipitation, guaranteeing long lifetime
• Good Fabrication Performance: Excellent forging, welding and machining performance, suitable for manufacturing complex shaped parts for various industrial applications

Performance Comparison with Common High-Temperature Alloys

Industrial Applications & Global Project Cases of 2.4854 Forging Parts

2.4854 (NiFe33Cr25Co) forging parts are widely used in extreme industrial scenarios that need high-temperature strength, corrosion resistance and long-term reliability. Our proven global project cases cover the following main industries:

Melting, Forging & Heat Treatment Specifications

All our 2.4854 (NiFe33Cr25Co) forging parts are made with strict process control, using advanced forging and inspection equipment to guarantee consistent high quality.

Premium Melting Process

2.4854 alloy steel is produced by double vacuum melting process: vacuum induction melting + electro-slag re-melting (VIM/ESR) or vacuum induction melting + vacuum arc re-melting (VIM/VAR) as default. This process guarantees ultra-high material purity, consistent chemical composition, low gas content and minimal non-metallic inclusions, which is important for the alloy's high-temperature performance and corrosion resistance.

Precision Forging Process

We use 2000T-6300T hydraulic forging presses and 1-5M seamless rolling machines for open die forging, with strict forging ratio control (≥3:1 for general parts, ≥6:1 for important parts) to break down the cast matrix, refine grain size and guarantee optimal internal matrix and mechanical properties. All finished forgings are 100% inspected to be free from cracks, flakes, seams, segregation and other harmful defects.

Standardized Heat Treatment

All 2.4854 forged parts are supplied in solution annealed condition by default, unless otherwise specified. The standard heat treatment process is: solution annealing at 1175°C to 1230°C (2150°F to 2250°F), holding for sufficient time according to section thickness, followed by rapid water quenching or air cooling to guarantee improved mechanical properties, corrosion resistance and structural stability.

Chemical Composition of 2.4854 (NiFe33Cr25Co) Alloy

Mechanical Properties of 2.4854 Forged Round Bars (Solution Annealed)

Quality Inspection, Certification & Compliance Standards

We apply full-process quality control from raw material incoming inspection to final product delivery. All finished 2.4854 (NiFe33Cr25Co) forging parts are accompanied by a EN 10204 3.1B inspection certificate in triplicate by default, with EN 10204 3.2 third-party certified certificate available on request. The certificate includes:

• Material code, purchase order number and material designation
• Heat number, heat analysis report and melting process details
• Mechanical test results, hardness range and heat treatment records
• Non-destructive testing (NDT) results and material purity grade report
• Dimension test report and material identification confirmation

Compliance Standards

Our production and testing fully meet these international standards: EN ISO 9001, EN 10002-1, ASTM E8/E8M, EN 10045, EN 10021, EN ISO 6506-1, ASTM E112, DIN 50602, ASTM E45, SEP 1923, EN 10204, ASTM A370, ASME, and API material requirements.The 2.4854 (NiFe33Cr25Co) alloy chemistry and solution‑annealed hardness (180–220 HB) meet the material requirements from NACE MR0175 / ISO 15156-3 for sour service applications. We can also produce parts to meet EN material standards for the EU market and JIS composition requirements for Japanese project specifications.

Physical & Thermal Properties of 2.4854 (NiFe33Cr25Co) Alloy

The mechanical strength, thermal and physical properties of 2.4854 (NiFe33Cr25Co) decide how well it works in repeated high-temperature conditions, heat exchanger designs, and structural size calculations for high-temperature process equipment. The values below apply to solution‑annealed forged material and are for engineering reference only; official certified test data will be provided with every order.

Note: All values are typical for solution-annealed forged material. Minor variation may occur across heats due to composition tolerance within the specified range. Actual certified values are reported in the material test certificate (MTC) supplied with each shipment.

Elevated-Temperature Tensile Properties of 2.4854 Forged Round Bar (Solution Annealed)

The main advantage of 2.4854 (NiFe33Cr25Co) over common Fe-Ni-Cr alloys is that it keeps its tensile and yield strength at temperatures much higher than 800°C. This comes from solid solution hardening (adding Mo, W, Nb) and controlled carbide precipitation at grain boundaries. The table below shows typical short-term tensile data at high temperatures, tested lengthwise on forged bar stock according to ASTM E21. Engineers designing parts for continuous or cyclic use above 700°C should also ask our technical team for long-term creep-rupture data, because short-term tensile values do not fully show time-dependent deformation under the highest service temperatures.

Values prefixed with "~" are representative typical data for engineering reference. Certified heat-specific data issued per EN 10204 3.1B with each order. For important applications, Jiangsu Liangyi can arrange third-party elevated-temperature testing per ASTM E21 or equivalent.

Practical Interpretation for Component Design

The data above shows a main feature that sets 2.4854 apart from Alloy 800H and similar materials: this alloy keeps over 53% of its room-temperature yield strength at 760°C, and still keeps a proof strength of around 145 MPa even at 982°C. In this temperature range, many other Fe-Ni-Cr alloys soften badly.So that 2.4854 forgings are the best choice material for uses including turbine seal rings, petrochemical reactor internal parts, and industrial furnace fixtures. In these applications, load-bearing strength must be guaranteed over wide temperature cycles without part distortion or size changes caused by creep.

2.4854 Alloy International Grade Equivalency & Cross-Reference Table

2.4854 (NiFe33Cr25Co) is classified under several international standard systems. When purchasing, specifying or cross-referencing this alloy in different countries and engineering documents, the following equivalence list helps you identify the material correctly. Note that although these designations cover nearly the same alloy chemistry, testing requirements, allowed heat treatment types and documentation rules may differ slightly between standards. Always check the applicable standard before finalizing your specification.

Trademark notice: HAYNES® and HR-120® are registered trademarks of Haynes International, Inc. TÜV® is a registered trademark of TÜV associations. SGS® is a registered trademark of SGS SA. Bureau Veritas® is a registered trademark of Bureau Veritas SA. All third-party trademarks are the property of their respective owners. Jiangsu Liangyi Co., Limited is not affiliated with, endorsed by, or sponsored by any of the above trademark holders. References are made solely for material identification and standards cross-reference purposes.

Jiangsu Liangyi can produce 2.4854 forged parts in line with any of the above designation systems. When sending an inquiry, please specify your needed standard (for example, EN 2.4854 according to EN 10302, or NiFe33Cr25Co according to EN 10095), so that we can make sure the chemical composition, mechanical testing, heat treatment condition and documentation fully meet your requirement.

Welding Guidelines for 2.4854 (NiFe33Cr25Co) Forged Components

2.4854 (NiFe33Cr25Co) has good weldability compared to many precipitation-hardened superalloys. However, its high chromium, nickel, molybdenum and tungsten content needs strict control of heat input, interpass temperature and joint preparation. This helps avoid hot cracking, grain boundary sensitization, and reduced corrosion resistance in the weld heat-affected zone (HAZ). The guidelines below are based on Jiangsu Liangyi’s workshop experience in welding 2.4854 forged parts for nuclear, petrochemical and power generation customers.

Recommended Filler Materials

Key Welding Parameters & Precautions

• Preheat: It is not needed for base material sections ≤50 mm in a clean, dry environment above 10°C. For sections exceeding 50 mm or in cold/humid ambient conditions, preheat to 100–150°C is advisable to minimize hydrogen pickup risk.
• Interpass Temperature: Must be held to ≤150°C (302°F) maximum to prevent excessive grain growth in the HAZ and to control distortion in multi-pass welds. Monitor continuously with contact thermometer.
• Heat Input: Use low-to-moderate heat input settings (typically 0.5–1.5 kJ/mm for GTAW). Excessive heat input promotes grain boundary carbide precipitation and can degrade corrosion resistance in the HAZ. Stringer bead technique is preferred over wide weave.
• Shielding Gas (GTAW/GMAW): Pure argon (Ar ≥99.99%) or Ar/He mixture (75% Ar + 25% He) for improved penetration on thick sections. Avoid CO₂-containing mixtures which can cause carbon pickup.
• Joint Preparation: Full penetration V-groove (60°–70°) or U-groove butt joints are preferred for pressure-retaining welds. Back gouging and re-welding of the root pass is recommended for critical joints requiring 100% radiographic quality.
• Cleanliness: Weld area must be free of oil, grease, paint, marking ink, sulphur-containing materials and halides (chlorides) before welding. Use dedicated stainless steel wire brushes; do not share carbon steel tooling.
• Post-Weld Heat Treatment (PWHT): It is not needed for most structural and pressure vessel applications. When service conditions need maximum corrosion resistance or stress relief, a full solution anneal at 1175–1230°C followed by rapid water quench or forced air quench is recommended. Partial stress relief at intermediate temperatures is not advised, as it may lead to sensitization.
• NDT after Welding: 100% visual inspection + PT (liquid penetrant testing) on accessible surfaces as minimum. RT (radiographic testing) or UT (ultrasonic testing) is needed for pressure-retaining welds per applicable code (ASME IX, EN ISO 15614-1).

Jiangsu Liangyi provides 2.4854 forged parts in the solution‑annealed state, ready for on‑site welding. If your project needs pre‑machined weld-end preparation (such as beveling, bore machining, or stub‑end fitting), our CNC machining team can supply weld‑ready forged parts with dimensional tolerances of ±0.1 mm.

Why Global Engineers Choose Jiangsu Liangyi for 2.4854 Forging Parts

In a market full of general alloy suppliers, choosing a professional forging manufacturer for 2.4854 (NiFe33Cr25Co) parts is critical. This alloy costs much more than standard stainless steel, so price alone should not be the only consideration. Below is a straightforward explanation of what makes Jiangsu Liangyi’s 2.4854 forging capability stand out from other suppliers.

Frequently Asked Questions (FAQ) About 2.4854 (NiFe33Cr25Co) Forging Parts