What is 2.4665?
2.4665 is the European Werkstoff (material) number for a nickel-chromium-iron-molybdenum superalloy also called Hastelloy X or Alloy X (UNS N06002, DIN NiCr22Fe18Mo). It is solid-solution strengthened rather than precipitation-hardened, and keeps its high-temperature strength, oxidation resistance and forgeability up to about 1200 °C.
The chromium content (about 22%) gives good oxidation resistance, while molybdenum and tungsten stiffen the matrix and help creep strength at temperature. The alloy also resists stress-corrosion cracking in petrochemical service.
Jiangyin Jiangnan Metal Co., Ltd. forges 2.4665 into rings, rolled rings, flanges, bars, discs, shafts, sleeves, tube sheets and custom near-net shapes. The material is melted by EAF + VOD / ESR, supplied to DIN 17744 in the solution-annealed condition, and released with EN 10204 3.1 / 3.2 certification.
2.4665 Equivalent Grades & Designations
The same alloy appears under several names across standards bodies and producers. If a drawing calls out any of the designations below, it can be supplied as 2.4665.
| Designation type | Value |
|---|---|
| Werkstoff No. (EN/DIN) | 2.4665 |
| DIN name | NiCr22Fe18Mo |
| UNS | N06002 |
| Common trade names | Hastelloy X · Alloy X · Pyromet 680 |
| Governing standard | DIN 17744 |
| Bar / billet spec | AMS 5754 |
| ASTM / ASME product forms | B/SB 435, 572, 619, 622, 626 |
Equivalents are provided for guidance. Exact grade acceptance is confirmed against your specification at enquiry.
Chemical Composition of 2.4665
Nominal composition per DIN 17744 (weight %). Nickel is the balance, about 47%.
| Element | Content (%) | Element | Content (%) |
|---|---|---|---|
| Nickel (Ni) | Balance | Manganese (Mn) | 1.0 max |
| Chromium (Cr) | 20.5 – 23 | Silicon (Si) | 1.0 max |
| Iron (Fe) | 17 – 20 | Copper (Cu) | 0.5 max |
| Molybdenum (Mo) | 8 – 10 | Aluminum (Al) | 0.5 max |
| Cobalt (Co) | 0.5 – 2.5 | Phosphorus (P) | 0.04 max |
| Tungsten (W) | 0.2 – 1.0 | Sulphur (S) | 0.03 max |
| Carbon (C) | 0.05 – 0.15 | Titanium (Ti) | 0.15 max |
| Boron (B) | 0.008 max |
Mechanical Properties
Typical minimum room-temperature properties for 2.4665 forgings in the solution-annealed condition. Certified values for each order are reported on the EN 10204 3.1 / 3.2 mill certificate.
| Condition | Section | Tensile Rm | Yield Rp0.2 | Elongation A |
|---|---|---|---|---|
| Forged, solution annealed | Ø < 100 mm | ≥ 660 N/mm² | ≥ 240 N/mm² | ≥ 40% |
Elongation shown is an indicative typical value; actual certified figures depend on section size and heat, and are stated on the mill certificate.
Melting & heat treatment
- Melted by EAF + VOD / ESR for low inclusion content and consistent chemistry.
- Supplied solution annealed; solution + ageing available on request.
- Hot-worked at forging temperature (approx. 1177 °C) to preserve grain structure and ductility.
2.4665 Forged Shapes We Supply
We produce 2.4665 forgings to customer drawings and standard product forms, in open-die and seamless-rolled-ring processes, in a wide range of diameters and wall thicknesses.
Applications of 2.4665 / Hastelloy X Forgings
With its high-temperature strength and oxidation resistance, 2.4665 is used across power, process and energy industries.
Gas turbines
Combustor components, transition ducts, tailpipes, afterburners, blades and vanes.
Pressure vessels
Shells, air receivers, and shell-and-tube heat exchanger tube sheets and flanges.
Oil & gas
Subsea and deepwater production systems, wellhead and Christmas-tree parts.
Valves
Bodies, seat rings, stems and blocks for ball, gate, globe, check and plug valves.
Industrial furnaces
Rolls, fixtures and components for high-temperature furnace service.
Rotating equipment
Shafts, spindles and gears for turbines, compressors and gearboxes.
Process plant
Columns, towers, tanks, silos, preheaters and process modules.
Pumps
Chemical pump and plunger-pump shafts and rolled rings.
Heavy industry
Cement, sugar and concrete mills, shipbuilding, paper & pulp, pharma.
Testing, Inspection & Certification
- Ultrasonic testing (UT) to EN 10228-3, SEP 1921 or ASTM A388 as required.
- Chemical analysis and mechanical testing (tensile, yield, elongation, hardness) per order.
- Third-party certification and EN 10204 3.1 / 3.2 mill certificates supplied.
- Dimensional inspection to your drawing, with PMI and additional NDT on request.
Send us the size or drawing of the 2.4665 forging you need and we will quote the best price and lead time for your project.
2.4665 Frequently Asked Questions
What is material 2.4665?
2.4665 is the European Werkstoff number for a nickel-chromium-iron-molybdenum superalloy known as Hastelloy X or Alloy X (UNS N06002, DIN NiCr22Fe18Mo). It is a solid-solution-strengthened alloy valued for high-temperature strength and oxidation resistance up to about 1200 °C.
What is 2.4665 equivalent to?
2.4665 is equivalent to Hastelloy X, Alloy X, UNS N06002, DIN NiCr22Fe18Mo and Pyromet 680. Bar and billet are covered by AMS 5754, and various product forms by ASTM/ASME B/SB 435, 572, 619, 622 and 626.
What is the chemical composition of 2.4665?
Nickel balance (~47%), 20.5–23% chromium, 17–20% iron, 8–10% molybdenum, 0.5–2.5% cobalt and 0.2–1% tungsten, with 0.05–0.15% carbon and controlled minor elements. See the composition table above for the full breakdown.
What is the maximum service temperature of 2.4665?
2.4665 (Hastelloy X) has good oxidation resistance and keeps its high-temperature strength up to about 1200 °C (2200 °F), which is why it is common in gas-turbine and industrial-furnace parts.
Which 2.4665 forged shapes can you supply, and with what testing?
We supply 2.4665 forged rings, seamless rolled rings, flanges, round bars, discs, shafts, spindles, sleeves, bushings, tube sheets, pipes and tubes to custom sizes. Forgings are ultrasonically tested to EN 10228-3, SEP 1921 or ASTM A388 and certified to EN 10204 3.1 / 3.2.
Who manufactures 2.4665 (Hastelloy X) forgings?
Jiangyin Jiangnan Metal Co., Ltd., an open-die forging factory at No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China, manufactures 2.4665 / Hastelloy X forgings for pressure-vessel, oil & gas, valve, turbine and heavy-machinery applications worldwide. Contact sales@steelforgepieces.com or +86-189-2135-9659.
Manufacturer
Jiangyin Jiangnan Metal Co., Ltd. is an open-die forging factory in Jiangyin, China, producing nickel-alloy, stainless-steel, alloy-steel, carbon-steel and tool-steel forgings. We forge 2.4665 and other superalloys into rings, rolled rings, flanges, bars, discs and shafts, with in-house melting control, ultrasonic testing and EN 10204 certification, and ship to customers worldwide.