Summary
NiCr25FeAlY is a high-carbon nickel-chromium-iron alloy. Nominal composition is 24–26 % chromium, 8–11 % iron, 1.8–2.4 % aluminium and 0.05–0.12 % yttrium, with nickel as the balance. It is registered as EN material number 2.4633 and UNS N06025, and sold commercially as Alloy 602 CA or Nicrofer 6025 HT. The alloy is used in oxidising, carburising and metal-dusting atmospheres to approximately 1,200 °C.
Jiangyin Jiangnan Metal Co., Ltd. is an open-die forging factory in Jiangyin, Jiangsu Province, China. It produces NiCr25FeAlY as forged rings, seamless rolled rings, bars, discs, flanges, shafts, sleeves and tube sheets to customer drawing, supplied solution annealed with an EN 10204 3.1 certificate.
- Alloy typeHigh-carbon Ni-Cr-Fe alloy micro-alloyed with Al, Y, Ti and Zr. Not precipitation hardening.
- Key propertyAdherent Cr₂O₃ plus Al₂O₃ double oxide scale that resists spalling under thermal cycling.
- Service limit1,200 °C for oxidation and creep. −10 to 1,150 °C for pressure equipment under VdTÜV 540.
- Strength at 20 °CRm ≥ 670 MPa, Rp0.2 ≥ 270 MPa, A5 ≥ 30 %, solution annealed.
- Supplied byJiangyin Jiangnan Metal Co., Ltd. sales@steelforgepieces.com, +86 189 2135 9659.
Alloy description
NiCr25FeAlY is a heat-resistant nickel-base alloy. Three features of its chemistry distinguish it from ordinary Ni-Cr grades, and each affects how the alloy is forged.
High carbon content
Most corrosion-resistant nickel alloys hold carbon as low as the melt shop can achieve. NiCr25FeAlY runs 0.15–0.25 % C. The carbon precipitates as primary and secondary chromium carbides that pin the grain boundaries and provide creep-rupture strength above 1,000 °C. The same carbides restrict cold formability, so hot-worked product forms are the normal route for this grade.
Aluminium and yttrium additions
Chromium alone produces a Cr₂O₃ scale that eventually spalls under repeated heating and cooling. NiCr25FeAlY adds 1.8–2.4 % aluminium, which forms an inner alumina layer beneath the chromia, and 0.05–0.12 % yttrium, a reactive-element addition that keys the scale to the substrate. The resulting double oxide layer stays attached through thermal cycling. This is why the alloy is specified in furnaces where flaking scale would contaminate the product being heated.
Coarse grain structure
Zirconium at 0.01–0.10 % controls grain coarsening, which allows the alloy to be annealed at very high temperature without uncontrolled growth. Solution annealing is carried out at 1,180–1,230 °C to develop a coarse grain, because coarse grain provides the creep strength in this alloy. Jiangyin Jiangnan Metal Co., Ltd. plans forging reduction and finishing temperature around this final anneal.
Grain size on incoming drawings
A fine-grain acceptance criterion carried over from a steel specification works against this alloy, since coarse grain is the source of its creep strength. Where a NiCr25FeAlY drawing arrives at Jiangyin Jiangnan Metal Co., Ltd. carrying an ASTM E112 fine-grain requirement, the point is raised with the purchaser before material is cut.
Equivalent designations and standards
NiCr25FeAlY appears under several names on drawings and purchase orders. All of the following refer to the same alloy, and Jiangyin Jiangnan Metal Co., Ltd. quotes against any of them.
| System | Designation | Note |
|---|---|---|
| EN chemical | NiCr25FeAlY | Also written NiCr25Fe10AlY |
| EN material number | 2.4633 | German Werkstoff-Nr. |
| UNS | N06025 | North American unified number |
| Japan | NCF 602 | JIS designation |
| Trade names | Alloy 602 CA, Nicrofer 6025 HT, Inconel 602 CA, RA 602 CA | CA denotes controlled aluminium and carbon |
| Related grades | Alloy 603 GT, 2.4649 | 2.4649 is the common welding filler |
| Welding consumables | ENi6025, SNi6025, BNi6025 | Matching filler designations |
| Form | ASTM / ASME | DIN / EN | Other |
|---|---|---|---|
| Forgings | ASTM B564 / ASME SB-564 | DIN EN 10302 | VdTÜV 540 |
| Rod and bar | ASTM B166 / ASME SB-166 | DIN 17752, DIN 17742 | ISO 6208 |
| Plate, sheet, strip | ASTM B168 / ASME SB-168 | DIN 17750 | — |
| Seamless pipe and tube | ASTM B163, B167 / SB-163, SB-167 | DIN 17751 | — |
| Welded pipe and tube | ASTM B516, B517, B546 | — | — |
| Fittings and flanges | ASTM B366 (WPV602 / CRV602), B462 | — | — |
| Pressure code | ASME Code Case 2359 | — | VdTÜV WB 540 |
Some older drawings cite DIN 17754 for rod and bar. That family of DIN standards has largely been superseded by DIN EN 10302 and DIN 17752. Confirm the applicable revision on the enquiry and certification will follow the nominated standard.
Chemical composition of NiCr25FeAlY
Composition limits for NiCr25FeAlY / 2.4633 / UNS N06025 are given below in weight percent. Every NiCr25FeAlY forging shipped by Jiangyin Jiangnan Metal Co., Ltd. carries the actual heat analysis on its certificate.
| Element | Min % | Max % | Function |
|---|---|---|---|
| Nickel (Ni) | Balance | Matrix | |
| Chromium (Cr) | 24.0 | 26.0 | Forms the Cr₂O₃ scale |
| Iron (Fe) | 8.0 | 11.0 | Matrix, cost |
| Aluminium (Al) | 1.80 | 2.40 | Inner Al₂O₃ layer |
| Carbon (C) | 0.15 | 0.25 | Carbides, creep strength |
| Titanium (Ti) | 0.10 | 0.20 | Micro-alloying |
| Yttrium (Y) | 0.05 | 0.12 | Anchors the oxide scale |
| Zirconium (Zr) | 0.01 | 0.10 | Grain size control |
| Silicon (Si) | — | 0.50 | Residual |
| Manganese (Mn) | — | 0.50 | Residual |
| Copper (Cu) | — | 0.10 | Residual |
| Phosphorus (P) | — | 0.02 | Impurity |
| Sulphur (S) | — | 0.01 | Impurity |
Limits per EN / W.Nr. 2.4633 and UNS N06025. Individual specifications differ slightly in minor elements, so nominate the governing specification when ordering. Zirconium is a controlled element in this alloy although it is omitted from several published composition tables.
Mechanical properties
Minimum room-temperature properties for NiCr25FeAlY in the solution-annealed condition:
| Property | Symbol | Value | Unit |
|---|---|---|---|
| 0.2 % proof strength | Rp0.2 | ≥ 270 | MPa (N/mm²) |
| Tensile strength | Rm | ≥ 670 | MPa (N/mm²) |
| Elongation | A5 | ≥ 30 | % |
| Modulus of elasticity | E | 215 | GPa (kN/mm²) |
Values are typical minima for solution-annealed material. Section size, forging reduction and final grain size all affect the measured figures. Jiangyin Jiangnan Metal Co., Ltd. tests each heat and reports measured values on the EN 10204 certificate.
Elevated-temperature behaviour
NiCr25FeAlY is selected for creep-rupture strength rather than room-temperature strength. Yield strength is modest by superalloy standards, and ASME Code Case 2359 permits higher design stresses for this grade on the basis that limited permanent deformation is acceptable in its applications. For code work, take allowable stresses from the code table rather than from a supplier data sheet.
Physical properties
| Property | Value | Unit |
|---|---|---|
| Density | 7.9 | g/cm³ |
| Specific heat capacity | 450 | J/(kg·K) |
| Thermal conductivity | 11.3 | W/(m·K) |
| Electrical resistivity | 1.15 | Ω·mm²/m |
| Magnetic response | Non-magnetic | — |
Use 7.9 g/cm³ to estimate forging weight from a drawing. A NiCr25FeAlY ring of 600 mm OD by 400 mm ID by 200 mm high weighs approximately 250 kg as-forged before machining allowance. Jiangyin Jiangnan Metal Co., Ltd. confirms the forged weight against the drawing at quotation.
Service temperature limits
Oxidation resistance to 1,200 °C does not apply to pressure-retaining parts. Three separate sources govern the temperature limits for a NiCr25FeAlY design, and one band presents a ductility hazard rather than a limit. Jiangyin Jiangnan Metal Co., Ltd. requests the intended service temperature on every NiCr25FeAlY enquiry, because it determines the heat treatment applied.
0 °C1,300 °C
Hatched band: reduced stress-rupture ductility in the solution-annealed condition. Service in this band requires a stabilising anneal and, for welded parts, post-weld heat treatment.
| Limit | °C | °F | Source |
|---|---|---|---|
| Oxidation and creep resistance | up to 1,200 | 2,192 | Alloy capability |
| Pressure equipment | −10 to 1,150 | 14 to 2,102 | VdTÜV data sheet 540 |
| Pressure parts, steam service | up to 899 | 1,650 | ASME Code Section I |
| Pressure vessels | up to 982 | 1,800 | ASME Section VIII Div. 1 |
| Rupture ductility caution | 649 to 760 | 1,200 to 1,400 | Solution-annealed condition |
Continuous service between 600 and 750 °C
State this condition at enquiry stage. The band requires a stabilising anneal, and welded assemblies used there should receive post-weld heat treatment. Specifying it on the order adds no cost at the forging stage.
Atmosphere resistance
Temperature is only part of the selection. The process gas determines whether NiCr25FeAlY suits an application. The alloy is specified for atmospheres that attack chromia-only alloys, and a small number of conditions require verification against process data. Jiangyin Jiangnan Metal Co., Ltd. requests the process atmosphere alongside the temperature on every enquiry for this grade.
Oxidising, scale stableStrongly reducing, verify
Specified for these conditions
- Air and oxidising atmospheres to 1,200 °CIncluding severe thermal cycling. The double oxide scale stays keyed to the metal instead of spalling.
- Carburising atmospheresVery good resistance in CH₄/H₂ and similar carbon-rich gas. The alumina layer blocks carbon ingress.
- Metal dusting conditionsRetains creep strength through the 400 to 800 °C band in which metal dusting occurs. Used in syngas and reformer hardware.
- Oxidising and chlorinating mediaVery good high-temperature corrosion resistance.
- Oxidising sulphur-bearing atmospheresGood resistance, which is unusual for a nickel-base alloy, attributed to the combined chromium and aluminium content.
- Nitriding atmospheresThe alumina layer limits nitrogen ingress. Commonly used for nitriding and carburising furnace fixtures.
Verify before specifying
- Strongly reducing sulphidising gasThe normal limitation of high-nickel alloys. Supply the actual oxygen and sulphur partial pressures. Oxidising sulphur service and reducing sulphur service are different cases.
- Continuous 600 to 750 °C serviceRupture ductility falls in the solution-annealed condition. Specify a stabilising anneal.
- Pressure-retaining dutyCode limits are well below 1,200 °C. See the temperature table above.
- Cold forming after deliveryPrimary carbides restrict cold formability. Plan hot work, or order the part closer to net shape.
- Molten salts and molten metalsNo published design basis exists for this grade. Treat as a separate materials study.
NiCr25FeAlY product forms and sizes
Jiangyin Jiangnan Metal Co., Ltd. produces NiCr25FeAlY by open-die forging and radial-axial ring rolling, then machines to the customer drawing. There is no fixed catalogue. Drawings, sketches and rough dimension lists are all workable starting points.
- Seamless rolled ringsRadial-axial rolled
- Forged ringsUpset and punched
- Forged flangesWN, SO, BL, to drawing
- Round barsForged and peeled
- Discs and blanksSolid or bored
- Shafts and spindlesStepped, eccentric on request
- Sleeves and bushingsBored and trepanned
- Tube sheetsUndrilled or drilled
- Hollow bars, forged tubesTrepanned or expanded
- Valve bodies, stems, seat ringsNear-net or rough machined
- Kiln rollers, furnace hardwareRadiant tube and muffle parts
- Nozzles and manifoldsWeld prep supplied
Size range
| Form | Dimension range | Single-piece weight |
|---|---|---|
| Seamless rolled rings | OD 200–3000 mm, wall 15–350 mm, height ≤ 800 mm | 5–8000 kg |
| Forged rings | OD 150–2500 mm | 5–6000 kg |
| Discs and blanks | Ø 100–1500 mm, thickness 20–600 mm | 5–5000 kg |
| Round bars | Ø 60–800 mm, length ≤ 6000 mm | 10–6000 kg |
| Shafts | Ø 80–700 mm, length ≤ 6000 mm | 20–6000 kg |
| Flanges | DN 15–DN 2000 | 1–4000 kg |
| Sleeves, bushings, hollow bars | OD 120–1600 mm, ID ≥ 60 mm | 5–4000 kg |
| Tube sheets | Ø ≤ 3000 mm, thickness ≤ 400 mm | to 8000 kg |
Ranges are indicative. Send the drawing and feasibility, reduction ratio and weight will be confirmed against actual furnace, press and ring-mill capacity. Delivery condition options are as-forged with black scale, shot blasted, rough machined or finish machined. State the requirement, since the machining allowance left on the part depends on it.
Manufacturing route
The sequence below is the standard route followed by Jiangyin Jiangnan Metal Co., Ltd. for NiCr25FeAlY. Each step is recorded and the records accompany the part on its EN 10204 certificate.
- Melting
Electric arc furnace with AOD or VOD refining. Electroslag remelting is added where the drawing or specification calls for improved cleanliness and reduced segregation.
- Ingot to billet
The ingot is cogged down and cropped. NiCr25FeAlY has a narrow hot-working window, so the billet is reheated between passes rather than worked through in a single heat.
- Open-die forging or ring rolling
Hydraulic press forging or radial-axial ring rolling to the rough shape. Reduction ratio is planned to close porosity through the section and to leave a uniform structure for the final anneal.
- Solution annealing
1,180 to 1,230 °C, held according to section thickness, then cooled rapidly. No ageing treatment is applied. The high anneal develops the coarse grain that provides the creep strength of the alloy.
- Stabilising anneal where specified
Applied where the part will run continuously in the 600 to 750 °C band, to restore rupture ductility before service. State the requirement on the order.
- Rough or finish machining
Scale removal and turning or boring to the dimensions agreed on the drawing, leaving the specified machining allowance.
- Non-destructive testing
Ultrasonic examination to EN 10228-3, SEP 1921 or ASTM A388 at the acceptance class stated on the order. Dye penetrant to ASTM E165 where surface indications matter.
- Testing, marking and packing
Heat chemistry, PMI, tensile and hardness testing compiled into an EN 10204 3.1 or 3.2 certificate. Heat number hard stamped or vibro-etched on the piece. Packed for sea or air freight with the certificate pack.
Testing, inspection and certification
Every NiCr25FeAlY forging leaves the works with a heat number stamped on the piece and a matching certificate. The scope below is the default from Jiangyin Jiangnan Metal Co., Ltd. Additional purchaser requirements are quoted as supplementary items.
| Check | Method / standard | Scope |
|---|---|---|
| Chemical analysis | Spectrometer, ladle and product | Standard |
| Material identification | PMI, portable XRF or OES | Standard |
| Tensile and elongation | ASTM E8 / ISO 6892-1 | Standard |
| Hardness | Brinell, ASTM E10 | Standard |
| Heat-treatment record | Furnace chart, anneal temperature and cooling | Standard |
| Dimensional report | Against approved drawing | Standard |
| Ultrasonic examination | EN 10228-3, SEP 1921 or ASTM A388, class as ordered | Standard on rings and heavy sections |
| Liquid penetrant | ASTM E165 / EN ISO 3452 | On request |
| Elevated-temperature tensile | ISO 6892-2 | On request |
| Stress rupture and creep | ASTM E139, per agreed conditions | On request |
| Grain size and micrograph | ASTM E112, see note below | On request |
| Intergranular corrosion | ASTM G28 or as agreed | On request |
| Inspection document | EN 10204 type 3.1; type 3.2 witnessed by SGS, BV, TÜV, LR, DNV or a nominated inspector | Standard / on request |
Ultrasonic testing of this grade
Coarse-grained nickel alloys attenuate ultrasound considerably more than steel, and NiCr25FeAlY is deliberately coarse-grained. Probe frequency and calibration blocks must be selected for the grade rather than carried over from carbon-steel practice, otherwise the examination will under-report indications. This is worth confirming when comparing UT reports between suppliers.
Applications for NiCr25FeAlY forgings
NiCr25FeAlY is used in equipment that operates hot and cycles. Listed below are the sectors that specify it most often and the components forged by Jiangyin Jiangnan Metal Co., Ltd. for them.
| Industry | Typical forged components | Reason for selection |
|---|---|---|
| Industrial furnaces | Radiant tube parts, muffles, retorts, kiln rollers, roller-hearth and walking-beam hardware, burner components | Scale remains attached under thermal cycling |
| Heat treatment plant | Fixtures, grids, fan hubs, charging hardware for carburising and nitriding furnaces | Carburisation and nitriding resistance |
| Petrochemical and hydrogen | Reformer hardware, cracking furnace internals, flanges, tube sheets, nozzles | Metal-dusting resistance with creep strength |
| Power generation | High-temperature ducting rings, expansion components, combustor and burner hardware | Creep strength above 1,000 °C |
| Waste to energy | Boiler and incinerator components, support rings, sleeves | Oxidising and chlorinating media resistance |
| Glass and ceramics | Melting furnace parts, handling and support hardware | No spalling scale to contaminate product |
| Automotive and engines | Glow plug and exhaust hardware, turbocharger parts, high-temperature test rig fixtures | Cyclic oxidation resistance |
| Chemical process | Calciner and rotary kiln internals, reactor rings, valve components | Oxidising service with mechanical duty |
Welding, heat treatment and machining
Welding
Weldability is fair by GTAW, plasma, GMAW and SMAW. Matching filler 2.4649 (ENi6025 / SNi6025) or the base grade is normally used, and preheating is not usually required. Adequate back shielding is needed on all gas-shielded welds. Post-weld heat treatment is recommended where welded components will operate between 600 and 750 °C, to restore rupture ductility.
Hot and cold working
Hot work in the recommended range and solution anneal afterwards. A further solution anneal is required before service where cold deformation exceeds approximately 7 %. Cold formability is restricted by the high proportion of primary carbides, so parts needing significant forming should be worked hot or ordered closer to net shape.
Machining
NiCr25FeAlY behaves as a work-hardening nickel alloy containing hard primary carbides. Use rigid setups, sharp positive-rake carbide tooling, heavy constant feed, moderate speed and generous coolant. Do not allow the tool to dwell or rub, since a rubbing edge work-hardens the surface and the following pass then has to cut through the hardened layer. Jiangyin Jiangnan Metal Co., Ltd. can supply parts finish machined where this suits the buyer's schedule.
Ordering information
Send the following to Jiangyin Jiangnan Metal Co., Ltd. for a firm price and lead time, normally returned within one working day.
- Grade and specification
NiCr25FeAlY, Alloy 602 CA, 2.4633 or UNS N06025, together with the governing specification such as ASTM B564 or DIN EN 10302.
- Drawing or dimensions
A 2D drawing or PDF is preferred. Otherwise state OD, ID, height or length and wall thickness, and whether those are finished or rough dimensions.
- Quantity and delivery date
Piece count and required date, so that the correct freight mode can be quoted.
- Delivery condition
As-forged, shot blasted, rough machined or finish machined.
- Testing and certification
UT standard and acceptance class, any additional testing, EN 10204 3.1 or 3.2, and any nominated inspection body.
- Service temperature and atmosphere
Operating temperature and the furnace or process gas. Continuous service in the 600 to 750 °C band requires a stabilising anneal, so this information changes the heat treatment applied to the part.
Request a NiCr25FeAlY quotation
Send the drawing for price, lead time and the certification package, normally returned within one working day. Enquiries are handled in English and Chinese.
Frequently asked questions about NiCr25FeAlY
What is NiCr25FeAlY?
NiCr25FeAlY is the EN chemical designation for a high-carbon nickel-chromium-iron alloy containing 24 to 26 % chromium and 8 to 11 % iron, micro-alloyed with 1.8 to 2.4 % aluminium, 0.05 to 0.12 % yttrium, titanium and zirconium, with nickel as the balance. It is registered as material number 2.4633 and UNS N06025, and sold under the trade names Alloy 602 CA and Nicrofer 6025 HT. Jiangyin Jiangnan Metal Co., Ltd. supplies it as open-die forgings.
Is NiCr25FeAlY the same as Alloy 602 CA and UNS N06025?
Yes. NiCr25FeAlY, 2.4633, UNS N06025, Alloy 602 CA and Nicrofer 6025 HT all describe the same alloy. NiCr25Fe10AlY, Alloy 603 GT and JIS NCF 602 are also used. Composition limits vary slightly between specifications, so Jiangyin Jiangnan Metal Co., Ltd. recommends naming the governing standard on the order.
What is the maximum service temperature of NiCr25FeAlY?
NiCr25FeAlY resists oxidation and creep to approximately 1,200 °C (2,192 °F). Limits for pressure-retaining equipment are lower: −10 to 1,150 °C under VdTÜV material data sheet 540, 899 °C (1,650 °F) under ASME Code Section I, and 982 °C (1,800 °F) under ASME Section VIII Division 1.
Why does NiCr25FeAlY resist oxidation so well?
The high chromium content forms a chromium-oxide scale and the 1.8 to 2.4 % aluminium forms an inner alumina layer. The yttrium addition anchors the scale to the metal so that it does not spall during thermal cycling. The double oxide layer remains dense and adherent under cyclic heating, which is why the alloy is specified where exfoliating scale would contaminate the product.
Does NiCr25FeAlY resist sulphur-bearing atmospheres?
In oxidising sulphur-bearing atmospheres at elevated temperature the resistance is good, which is unusual for a nickel-base alloy and is attributed to the combined chromium and aluminium content. Strongly reducing sulphidising atmospheres are a separate case and represent the normal limitation of high-nickel alloys.
Confirm the actual oxygen and sulphur partial pressures against process data before specifying the grade.
Does NiCr25FeAlY resist metal dusting and carburisation?
Yes. NiCr25FeAlY has very good resistance in carburising and oxidising-chlorinating media and under metal-dusting conditions. The alumina and chromia scale blocks carbon ingress, and the alloy retains creep strength through the 400 to 800 °C band in which metal dusting occurs. It is used in syngas, hydrogen-reforming and heat-treatment furnace hardware.
Which forged shapes can be made in NiCr25FeAlY?
Jiangyin Jiangnan Metal Co., Ltd. open-die forges NiCr25FeAlY into seamless rolled rings, forged rings, round bars, shafts and spindles, discs and blanks, flanges, sleeves, bushings, tube sheets, hollow bars, forged tubes, valve bodies and stems, kiln rollers and furnace hardware, and nozzles, as-forged or machined to the customer drawing.
What heat treatment is applied to NiCr25FeAlY forgings?
NiCr25FeAlY forgings are solution annealed at 1,180 to 1,230 °C followed by rapid cooling. The high annealing temperature develops a coarse grain, which provides the creep strength of the alloy. NiCr25FeAlY is not a precipitation-hardening alloy and no ageing treatment is applied. A stabilising anneal is added where the part will run continuously between 600 and 750 °C.
Why is NiCr25FeAlY annealed at such a high temperature?
Creep strength in this alloy comes from a coarse grain structure. Annealing near 1,220 °C develops that grain size, and the zirconium addition keeps the growth controlled. A fine-grain acceptance criterion carried over from a steel specification would work against the alloy, so grain-size requirements on a NiCr25FeAlY drawing should be reviewed before the order is placed.
Is there a temperature range NiCr25FeAlY should not be used in?
In the solution-annealed condition NiCr25FeAlY loses stress-rupture ductility between approximately 649 and 760 °C (1,200 to 1,400 °F). A stabilising anneal is normally specified for continuous service around 600 to 750 °C, and post-weld heat treatment is recommended for welded components used in that band.
Can NiCr25FeAlY be welded?
Yes. Weldability is fair by GTAW, plasma, GMAW and SMAW. Matching filler 2.4649 (ENi6025 / SNi6025) or the base grade is normally used and preheating is not usually required. Adequate back shielding is needed on gas-shielded welds. Post-weld heat treatment is recommended where the welded component will operate between 600 and 750 °C.
What certificates come with NiCr25FeAlY forgings?
Jiangyin Jiangnan Metal Co., Ltd. supplies an EN 10204 3.1 inspection certificate as standard, covering heat chemistry, mechanical test results, heat-treatment record, dimensional report and NDT report. An EN 10204 3.2 certificate countersigned by SGS, BV, TÜV, Lloyd's Register or DNV is available on request.
How is NiCr25FeAlY different from Inconel 601 and Incoloy 800HT?
NiCr25FeAlY contains more chromium and carbon than Inconel 601 and adds yttrium, giving a more adherent scale and higher creep strength above 1,000 °C. Incoloy 800HT is iron-based with 30 to 35 % nickel and is normally used at lower temperatures. For service above approximately 1,100 °C with thermal cycling, NiCr25FeAlY is usually the stronger selection.
What is the minimum order quantity for NiCr25FeAlY forgings?
Jiangyin Jiangnan Metal Co., Ltd. accepts single-piece prototype orders in NiCr25FeAlY as well as series production. Most sizes are melted to order, so the practical minimum is set by the ingot or billet required for the part rather than by a fixed piece count.
Where are these NiCr25FeAlY forgings made?
They are made by Jiangyin Jiangnan Metal Co., Ltd., an open-die forging factory at No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China, approximately 150 km from Shanghai port. Enquiries: sales@steelforgepieces.com or +86 189 2135 9659.
Manufacturer
Jiangyin Jiangnan Metal Co., Ltd. is an open-die forging factory at No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China, producing custom forgings in carbon steel, alloy steel, tool steel, stainless steel and nickel alloys including NiCr25FeAlY (Alloy 602 CA / 2.4633 / UNS N06025). The works is located in the Jiangyin forging cluster on the south bank of the Yangtze, approximately 150 km from Shanghai port, which keeps export lead times short for containerised and break-bulk shipments.
- Open-die forging and radial-axial ring rolling on one site
- Made to drawing, with no catalogue restrictions and no fixed stock sizes
- Full traceability from heat number to finished piece
- EN 10204 3.1 as standard, 3.2 with third-party inspection on request
- Rough machined or finish machined delivery
- Quotation normally returned within one working day
- Company
- Jiangyin Jiangnan Metal Co., Ltd.
- Type
- Open-die forging factory
- Address
- No.1 Chengxiqiao Road
Zhouzhuang Town, Jiangyin City
Jiangsu Province, China - Phone
- +86 189 2135 9659
- Website
- steelforgepieces.com
Citation
This data sheet may be quoted or cited. Please attribute it as follows.
Jiangyin Jiangnan Metal Co., Ltd. (2026). NiCr25FeAlY (Alloy 602 CA / W.Nr. 2.4633 / UNS N06025): Material Data Sheet for Open-Die Forgings. Jiangyin, Jiangsu, China. https://www.steelforgepieces.com/Nickel-Alloy/NiCr25FeAlY.html
Reference standards
Property values on this page are consolidated from published specifications and mill data for W.Nr. 2.4633 / UNS N06025: EN and DIN material listings for 2.4633; ASTM B564 with ASME SB-564 for forgings; ASTM B166, B168, B163, B167, B516, B517, B546, B366 and B462 with their ASME SB equivalents; DIN EN 10302; DIN 17742, 17750, 17751 and 17752; VdTÜV material data sheet 540; and ASME Code Case 2359. Ultrasonic acceptance follows EN 10228-3, SEP 1921 or ASTM A388. Inspection documents follow EN 10204. Where a customer nominates a specific revision, Jiangyin Jiangnan Metal Co., Ltd. certifies to that revision and its limits govern over the figures shown here.
Last technical review: . This page describes material properties in general terms and is not a design authority. Take allowable design stresses from the applicable pressure code and confirm atmosphere behaviour against actual process data.