Inconel 725 ForgingsUNS N07725 · Alloy 725
Age-hardenable nickel-chromium-molybdenum-niobium alloy, forged to your drawing in Jiangyin, China. Rings, seamless rolled rings, flanges, shafts, discs, sleeves, tube sheets and bars.
- UNS
- N07725
- Alloy system
- Ni-Cr-Mo-Nb
- Condition
- Sol. ann. + aged
- Density
- 8.31 g/cm³
- Min. UTS
- 1034 MPa
- Max hardness
- 43 HRC
Summary
Inconel 725 (UNS N07725) is an age-hardenable nickel-chromium-molybdenum-niobium alloy whose corrosion resistance is close to Alloy 625 but whose strength is about double. That strength comes from an ageing heat treatment rather than from cold work, so it can also be developed in thick or non-uniform forged sections that cannot be cold worked, and the alloy keeps good ductility and toughness.
Jiangyin Jiangnan Metal Co., Ltd. is an open-die forging factory at No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China. We forge Inconel 725 rings, seamless rolled rings, flanges, shafts, discs, sleeves, bushings, tube sheets and round bars in diameters from 100 mm to 6000 mm and single-piece weights from 10 kg to 15,000 kg, supplied solution annealed and aged to ASTM B805 chemistry, with NACE MR0175 / ISO 15156-3 compliance and EN 10204 3.1 or 3.2 certification. Send a drawing to sales@steelforgepieces.com or call +86 189 2135 9659.
What Inconel 725 is
Inconel 725, designated UNS N07725 and also sold as Alloy 725, is a precipitation-hardening nickel-base alloy containing 55 to 59 % nickel, 19.0 to 22.5 % chromium, 7.0 to 9.5 % molybdenum and 2.75 to 4.00 % niobium plus tantalum.
Strength comes from a gamma-prime phase that precipitates during a two-stage ageing treatment. In practice this decides most material selections. Because the hardening is done by heat treatment and not by cold work, a 400 mm thick forged ring reaches the same minimum properties as a thin bar. Cold-worked grades cannot do that, and it is the main reason Alloy 725 is used for heavy subsea and downhole hardware.
Chromium handles oxidising media. The high molybdenum content handles reducing acids and gives strong pitting and crevice resistance. Titanium holds back intergranular attack, and the high nickel level resists chloride stress-corrosion cracking. Together these put the alloy on the approved list in NACE MR0175 for sour oil and gas wells carrying carbon dioxide, chlorides and hydrogen sulphide.
On naming: Inconel® is a registered trademark of Special Metals Corporation. Jiangyin Jiangnan Metal is an independent forging factory and supplies the alloy under its generic designations, UNS N07725 or Alloy 725. Purchase orders should use those.
Chemical composition of Inconel 725 (UNS N07725)
Composition limits come from ASTM B805, with iron as the balance. Every heat is analysed and the analysis is printed on the EN 10204 certificate that ships with the forging.
| Element | Minimum | Maximum | What it does |
|---|---|---|---|
| Nickel (Ni) | 55.0 | 59.0 | Austenitic matrix, chloride SCC resistance |
| Chromium (Cr) | 19.0 | 22.5 | Oxidising media and general corrosion resistance |
| Molybdenum (Mo) | 7.0 | 9.5 | Pitting, crevice and reducing-acid resistance |
| Niobium + tantalum (Nb+Ta) | 2.75 | 4.00 | Main age-hardening element |
| Titanium (Ti) | 1.00 | 1.70 | Age hardening, holds back intergranular attack |
| Aluminium (Al) | – | 0.35 | Additional hardening |
| Carbon (C) | – | 0.03 | Kept low to limit carbide precipitation |
| Manganese (Mn) | – | 0.35 | Residual, deoxidation |
| Silicon (Si) | – | 0.20 | Residual, deoxidation |
| Phosphorus (P) | – | 0.015 | Impurity, controlled |
| Sulphur (S) | – | 0.010 | Impurity, controlled for hot workability |
| Iron (Fe) | Balance | Matrix balance | |
Limits per ASTM B805, Precipitation Hardening Nickel Alloys Bar and Wire, which covers UNS N07716, N07725, N07773, N07776, N09777 and N09925.
Mechanical properties of Inconel 725
In the age-hardened condition Inconel 725 gives a minimum 0.2 % proof stress of 827 MPa (120 ksi) and a minimum tensile strength of 1034 MPa (150 ksi), with at least 20 % elongation and 35 % reduction of area, at a hardness below 43 HRC.
Specified minimum properties, solution annealed and aged
| Property | Up to 76 mm (3") | 76 to 254 mm (3 to 10") | Over 254 mm (10") |
|---|---|---|---|
| 0.2 % proof stress, min. | 827 MPa / 120 ksi | 827 MPa / 120 ksi | 827 MPa / 120 ksi |
| Tensile strength, min. | 1034 MPa / 150 ksi | 1034 MPa / 150 ksi | 1034 MPa / 150 ksi |
| Elongation, min. | 20 % | 20 % | 20 % |
| Reduction of area, min. | 35 % | 35 % | 35 % |
| Hardness | < 43 HRC | < 43 HRC | < 43 HRC |
| Charpy at −60 °C, longitudinal | 54 J avg (47 J min) | 54 J avg (47 J min) | – |
| Charpy at −60 °C, transverse | 50 J avg (43 J min) | 50 J avg (43 J min) | 43 J avg (37 J min) |
Annealed against age hardened, typical values
This table is why Alloy 725 is almost always bought in the aged condition. Values are typical for transverse specimens taken from hot-finished rounds of 102 to 190 mm (4.0 to 7.5 in) diameter.
| Condition | 0.2 % proof stress | Tensile strength | Elongation | Hardness |
|---|---|---|---|---|
| Solution annealed | 427 MPa (62 ksi) | 855 MPa (124 ksi) | 57 % | about 5 HRC |
| Solution annealed + aged | 917 MPa (133 ksi) | 1241 MPa (180 ksi) | 30 % | about 36 HRC |
Ageing more than doubles proof stress and still leaves 30 % elongation. That is what makes the alloy usable for high-load parts in corrosive duty.
Physical properties of Inconel 725
Inconel 725 has a density of 8.31 g/cm³ (8310 kg/m³, about 0.300 lb/in³), a Young's modulus of 204 GPa and a magnetic permeability below 1.001, so it counts as non-magnetic.
| Property | Metric | Imperial |
|---|---|---|
| Density | 8310 kg/m³ (8.31 g/cm³) | 0.300 lb/in³ |
| Young's modulus | 204 GPa | 29.6 × 10&sup6; psi |
| Poisson's ratio | 0.31 | 0.31 |
| Specific heat | 0.43 J/(g·K) | 0.103 Btu/(lb·°F) |
| Thermal conductivity | 10.6 W/(m·K) | 6.13 Btu/(hr·ft·°F) |
| Mean thermal expansion, 20 to 100 °C | 13 × 10⁻⁶ /K | 7.2 × 10⁻⁶ /°F |
| Electrical resistivity | 1.144 µΩ·m | 688 Ω·circ mil/ft |
| Magnetic permeability | < 1.001 | < 1.001 |
Use the density to turn a forged envelope into billet weight. For a rolled ring, weight in kg = π/4 × (OD² − ID²) × height × 8.31 × 10⁻⁶, with all dimensions in millimetres.
Corrosion performance
Corrosion resistance is close to Alloy 625, about 0.01 mm/year in seawater and 0.15 mm/year in 10 % sulphuric acid at 80 °C, but with twice the strength.
| Environment | Alloy 725 N07725 | Alloy 625 N06625 | Alloy 718 N07718 | Monel 400 N04400 |
|---|---|---|---|---|
| Seawater | 0.01 | 0.01 | < 0.01 | 0.25 |
| 10 % sulphuric acid, 80 °C | 0.15 | 0.15 | 0.15 | 0.06 |
| Boiling 50 % nitric acid | 1.8 | 1.8 | 1.5 | 1.1 |
For sour service the controlling document is NACE MR0175 / ISO 15156-3. It lists UNS N07725 with a hardness limit and with set environmental limits for hydrogen sulphide partial pressure, chloride concentration, pH and temperature. Those limits change between editions, so check them against the current edition for your own well conditions before you fix the material selection.
Melting and forging route
Inconel 725 forgings start from double or triple melted billet, commonly EAF + VOD + ESR, VIM + VAR, or VIM + ESR + VAR, because cleanliness controls fatigue life and ultrasonic acceptance.
Any of these melting routes is acceptable for Alloy 725, and the route actually used is written on the certificate:
- Electric arc furnace (EAF), then argon or vacuum oxygen decarburisation (AOD or VOD), then electroslag remelting (ESR) or vacuum arc remelting (VAR)
- Vacuum induction melting (VIM), then vacuum arc remelting (VAR)
- Vacuum induction melting (VIM), then electroslag refining (ESR) and vacuum arc remelting (VAR)
We forge with controlled reduction ratios so the deformation reaches the core of heavy sections. Alloy 725 work hardens fast and has a narrow hot-working window, so reheating between passes is planned in advance rather than decided on the floor. That is the main practical difference between forging Alloy 725 and forging a stainless grade.
Heat treatment cycle for Inconel 725
The standard cycle is solution annealing above 1040 °C with rapid cooling, air cooling preferred, then ageing at 730 °C for 8 hours, furnace cooling to 620 °C, holding a further 8 hours, then air cooling.
| Stage | Temperature | Hold | Cooling | Purpose |
|---|---|---|---|---|
| Solution anneal | above 1040 °C | to section | Rapid, air cool preferred | Dissolve precipitates, recrystallise, set grain size |
| Age, first stage | 730 °C | 8 h | Furnace cool to 620 °C | Nucleate the strengthening phase |
| Age, second stage | 620 °C | 8 h | Air cool | Complete precipitation, reach full strength |
We run solution treatment and ageing in sequence on the same forging, with furnace charts recorded and referenced on the material certificate. Where a customer specification sets its own cycle, for example an API 6ACRA schedule or an operator's own CRA specification, we follow that cycle instead and state it on the certificate.
Inconel 725 forged forms and works capacity
The works forges diameters from 100 mm to 6000 mm, lengths from 100 mm to 12,000 mm and single-piece weights from 10 kg to 15,000 kg, on 1, 3, 6 and 9 tonne open-die hammers, a 4500 tonne hydraulic press and 3 metre and 6 metre ring rolling mills.
| Item | Capacity |
|---|---|
| Open-die forging diameter | 100 mm to 6000 mm |
| Forging length | 100 mm to 12,000 mm |
| Seamless rolled ring outside diameter | 80 mm to 6000 mm |
| Single-piece weight | 10 kg to 15,000 kg |
| Open-die hammers | 1 t, 3 t, 6 t, 9 t |
| Hydraulic press | 4500 t |
| Ring rolling mills | 3 m and 6 m |
For nickel alloys the practical limit on any one job also depends on billet availability, so send the drawing and we will confirm the forged envelope, reduction ratio and machining allowance for your part.
Forged forms we make in UNS N07725
| Forged form | Typical use |
|---|---|
| Seamless rolled rings | Wellhead spools, connector bodies, bearing races |
| Forged rings, open die | Short-run and heavy-wall rings |
| Forged flanges | Pressure vessels, heat exchangers, subsea piping |
| Round bars and forging stock | Machined valve parts, hangers, landing nipples |
| Shafts and spindles | Pump and compressor shafts, agitator shafts |
| Discs and blanks | Turbine and pump discs, blind flanges |
| Sleeves and bushings | Wear sleeves, stuffing box parts |
| Tube sheets | Shell and tube heat exchangers |
| Hollow forgings and forged tubes | Pressure housings, cylinder bodies |
| Valve components | Valve bodies, seat rings, stems, blocks, bonnets |
We run the same route for Inconel 625, Inconel 718, Incoloy 925, Incoloy 945 and Inconel X-750.
Applications for Inconel 725 forgings
Inconel 725 is picked where a part has to be very strong and highly corrosion resistant at the same time. Most of the tonnage goes into sour oil and gas production, subsea hardware and high-strength marine fasteners.
Oil, gas and subsea
- Hangers, landing nipples and completion parts for corrosive and sour wells
- Wellhead and Christmas tree bodies, connectors and spools
- Subsea and deepwater production hardware, forged housings and pressure-retaining bodies
- High-strength fasteners, studs and threaded parts for marine and topside duty
Valves and flow control
- Valve bodies, bonnets, stems, seat rings and blocks for ball, gate, globe, check and plug valves
- Choke bodies and trim exposed to chloride and hydrogen sulphide streams
Chemical and process plant
- Forged flanges, tube sheets and nozzles for pressure vessels and shell and tube heat exchangers
- Agitator and mixer shafts, pump shafts, plunger pump parts
- Columns, towers, tanks, silos, preheaters and process modules that need a stronger 625-class material
Power, machinery and marine
- Compressor and turbine hardware, gearbox and power transmission forgings
- Shipbuilding and heavy machinery parts in seawater duty
- Non-magnetic parts for downhole measurement equipment, using the permeability below 1.001
Standards and specifications for UNS N07725
Chemistry for Inconel 725 comes from ASTM B805. Oilfield forgings are usually bought to API 6ACRA together with NACE MR0175 / ISO 15156-3. ASTM B564 does not list UNS N07725.
| Document | Scope | Applies to Alloy 725? |
|---|---|---|
| ASTM B805 | Precipitation Hardening Nickel Alloys Bar and Wire (N07716, N07725, N07773, N07776, N09777, N09925) | Yes, the main chemistry document |
| API 6ACRA | Age-hardened corrosion-resistant alloys for oil and gas wellhead and tree equipment | Yes, the usual oilfield ordering spec |
| NACE MR0175 / ISO 15156-3 | Materials for use in H2S-containing environments in oil and gas production | Yes, N07725 is listed, subject to environmental limits |
| ASME Code Case 2217 | Pressure-vessel use under the ASME Boiler and Pressure Vessel Code | Yes, where ASME construction is required |
| EN 10204 | Types of inspection document for metallic products | Yes, 3.1 or 3.2 certification |
| ASTM B564 | Nickel Alloy Forgings (N06625, N06600, N10276, N04400, N08825 and others) | No, UNS N07725 is not in the grade list |
One thing to check on your purchase order. A lot of enquiries for Alloy 725 forgings arrive written as "ASTM B564 UNS N07725". That combination does not exist. ASTM B564 covers nickel alloy forgings, but its grade list does not include N07725. If your drawing or order says this, sort it out before manufacture, normally by buying chemistry to ASTM B805 with mechanical properties, testing and heat treatment to API 6ACRA, NACE MR0175 / ISO 15156-3, or your own company specification. We raise this at quotation stage, not after the forging is made.
Testing, inspection and certification
Every Inconel 725 forging is ultrasonically tested and comes with an EN 10204 3.1 mill certificate. EN 10204 3.2 third-party certification is available on request.
| Test | Standard | Reported on certificate |
|---|---|---|
| Chemical analysis | ASTM B805 limits, per heat | Full element analysis, heat number |
| Tensile test | ASTM A370 / ISO 6892-1 | 0.2 % proof, UTS, elongation, reduction of area |
| Hardness | ASTM E18 (Rockwell C) | Values and location, against the NACE limit |
| Charpy impact | ASTM A370 / ISO 148-1, test temperature to order | Individual and average values |
| Ultrasonic testing | EN 10228-3, SEP 1921, ASTM A388 | Acceptance class and result |
| Liquid penetrant | ASTM E165 / EN ISO 3452 | On request, usual for machined surfaces |
| Grain size and microstructure | ASTM E112 | On request or where specified |
| Dimensional inspection | To customer drawing | Dimensional report |
| Certification | EN 10204 3.1 (works) or 3.2 (third party) | Traceable to heat and forging number |
We arrange third-party witnessing by TUV, BV, SGS, DNV, Lloyd's Register or an end-user inspector when asked. Tell us at enquiry stage. It changes both price and lead time, and the inspection and test plan has to be agreed before the forging is heat treated.
Machining and welding Inconel 725
Inconel 725 work hardens fast, so machine it at low cutting speed with a heavy uninterrupted feed and rigid tooling. Light fast passes that suit stainless steel will not work here.
| Operation | Cutting speed | Feed rate | Depth of cut |
|---|---|---|---|
| Turning, roughing | 9 to 12 m/min (29 to 38 ft/min) | 0.25 mm/rev (0.010 in) | 6.4 mm (0.25 in) |
| Turning, finishing | 12 to 15 m/min (38 to 50 ft/min) | 0.20 mm/rev (0.008 in) | 1.3 mm (0.05 in) |
| Milling | 11 to 14 m/min (35 to 45 ft/min) | 0.1 to 0.2 mm/tooth | 0.2 to 3.0 mm |
| Drilling, Ø 6.4 mm (1/4") | 9 to 12 m/min | 0.05 mm/rev | – |
| Drilling, Ø 12.7 mm (1/2") | 9 to 12 m/min | 0.13 mm/rev | – |
| Drilling, Ø 25.4 mm (1") | 9 to 12 m/min | 0.25 mm/rev | – |
Carbide inserts for turning and milling, HSS drills with a 118° point angle. Do not let the tool dwell in the cut. A stalled tool glazes the surface and the next pass has to cut through a work-hardened layer.
Welding
Inconel 725 is normally welded by gas tungsten arc welding with a matching filler or an ERNiCrMo-3 (Alloy 625 type) filler. Welding is usually done before ageing so that weld metal, heat-affected zone and parent metal age together and end up with comparable properties. For sour service, qualify the welding procedure against NACE MR0175 / ISO 15156-3 as well as the construction code, and check the hardness of the weld and heat-affected zone, not only the parent forging.
Inconel 725 against 625, 718 and 925
Alloy 725 buys you the corrosion resistance of Alloy 625 at about double the strength. Alloy 718 is the cheaper pick when high temperature strength matters more than sour-service corrosion. Incoloy 925 suits milder duty where cost decides.
| Criterion | Alloy 725 N07725 | Alloy 625 N06625 | Alloy 718 N07718 | Incoloy 925 N09925 |
|---|---|---|---|---|
| Base | Ni-Cr-Mo-Nb | Ni-Cr-Mo-Nb | Ni-Fe-Cr-Nb | Fe-Ni-Cr |
| Strengthening | Age hardening | Solid solution, annealed | Age hardening | Age hardening |
| Nickel, typical | 55 to 59 % | 58 % min. | 50 to 55 % | about 42 to 46 % |
| Molybdenum | 7.0 to 9.5 % | 8 to 10 % | about 3 % | about 3 % |
| 0.2 % proof stress | 827 MPa min. | about 415 MPa | 827 MPa min. | about 758 MPa |
| Sour service (H2S) | Excellent | Excellent | Limited | Moderate |
| Relative cost | High | High | Medium | Lower |
| Why it gets picked | Strength and severe corrosion together | Corrosion only, moderate loads | High temperature strength | Cost driven, milder environments |
Full data sheets: Inconel 625 forgings, Inconel 718 forgings, Incoloy 925 forgings, Incoloy 945 forgings.
How to ask for a price on Inconel 725 forgings
Send a drawing or the rough forged dimensions to sales@steelforgepieces.com. We normally come back within one working day when the four items below are included.
- Drawing or rough size. A 2D drawing, 3D model, or the forged envelope: OD by ID by height for rings, diameter by length for bars and shafts. If you only have the finished machined size, tell us what machining allowance to add.
- Delivery condition. Solution annealed only, or solution annealed plus aged. As forged, rough machined or finish machined.
- Specification and testing. ASTM B805 chemistry, API 6ACRA, NACE MR0175 / ISO 15156-3, or your own company specification. Plus the NDT you need, the hardness limit and the impact test temperature.
- Certification and quantity. EN 10204 3.1 or 3.2, whether third-party witnessing is needed, the quantity and the delivery date.
Ask for an Inconel 725 forging price
Jiangyin Jiangnan Metal Co., Ltd. is an open-die forging factory in Jiangyin, Jiangsu, China, making forged rings, seamless rolled rings, flanges, shafts, discs and bars in carbon steel, alloy steel, tool steel, stainless steel and nickel-base alloys. We price from drawings, sketches or rough sizes.
Email the drawing Call +86 189 2135 9659
Address No.1 Chengxiqiao Road, Zhouzhuang Town, Jiangyin City, Jiangsu Province, China
Phone 0086-189-2135-9659
Email sales@steelforgepieces.com
Web www.steelforgepieces.com
Frequently asked questions about Inconel 725
What is Inconel 725?
Inconel 725, designated UNS N07725, is an age-hardenable nickel-chromium-molybdenum-niobium alloy. Its corrosion resistance is close to that of Alloy 625, but its strength is about double, because it is hardened by an ageing heat treatment instead of by cold work. High strength can therefore also be reached in thick or non-uniform forged sections.
What is the UNS number for Inconel 725?
The UNS number is N07725. The alloy is also sold as Alloy 725 or Nickel Alloy 725. Inconel® is a registered trademark of Special Metals Corporation, so when buying from an independent forging factory the designation for the purchase order is UNS N07725 or Alloy 725.
Which standard covers Inconel 725 forgings?
Chemistry comes from ASTM B805, which covers UNS N07716, N07725, N07773, N07776, N09777 and N09925. Oilfield forgings are usually bought to API 6ACRA together with NACE MR0175 / ISO 15156-3. ASTM B564 does not list UNS N07725, so a purchase order calling for "ASTM B564 Alloy 725" is wrong and should be sorted out before manufacture.
What is the difference between Inconel 725 and Inconel 625?
Corrosion resistance is close. The difference is strength. Alloy 725 is age hardenable, Alloy 625 is normally supplied annealed. Minimum 0.2 % proof stress is 827 MPa (120 ksi) for age-hardened Alloy 725 against about 415 MPa (60 ksi) for annealed Alloy 625. Buy 725 when you need 625 corrosion resistance with about twice the strength.
What is the difference between Inconel 725 and Inconel 718?
Both are age hardenable and both reach about 827 MPa minimum proof stress. Alloy 725 carries far more molybdenum, 7.0 to 9.5 % against roughly 3 %, and more chromium, so it resists pitting, crevice attack and sour environments much better. Alloy 718 is cheaper and is the usual pick where high temperature strength matters more than corrosion.
What heat treatment is used for Inconel 725 forgings?
A typical cycle is solution annealing above 1040 °C with rapid cooling, air cooling preferred, then ageing at 730 °C for 8 hours, furnace cooling to 620 °C, holding a further 8 hours, then air cooling. We run solution treatment and ageing in sequence on the same forging and report both cycles on the certificate.
Is Inconel 725 approved for NACE MR0175 sour service?
Yes. UNS N07725 is listed in NACE MR0175 / ISO 15156-3 for sour oil and gas service, subject to the hardness limit and to the environmental limits given for the relevant material group. Hardness in the aged condition is normally kept below 43 HRC. Check the limits for H2S partial pressure, chloride content, pH and temperature against the current edition.
What is the density of Inconel 725?
8310 kg/m³, that is 8.31 g/cm³ or about 0.300 lb/in³. We use this figure to turn a forged ring or disc envelope into billet weight when pricing.
Is Inconel 725 magnetic?
No. Magnetic permeability is below 1.001 at 20 °C, so the alloy counts as non-magnetic. That is one reason it is used for downhole and measurement-while-drilling parts where magnetic interference cannot be tolerated.
How large an Inconel 725 forging can you produce?
The works handles forged diameters from 100 mm to 6000 mm, lengths from 100 mm to 12,000 mm and single-piece weights from 10 kg to 15,000 kg, on 1, 3, 6 and 9 tonne open-die hammers, a 4500 tonne hydraulic press and 3 m and 6 m ring rolling mills. For nickel alloys the limit on any one job also depends on billet availability, so send the drawing and we will confirm.
Can Inconel 725 be welded?
Yes, normally by gas tungsten arc welding with a matching filler or an ERNiCrMo-3 (Alloy 625 type) filler. Welding is usually done before ageing so the joint and parent metal age together. Qualify the procedure against the construction code, and against NACE MR0175 / ISO 15156-3 if the part goes into sour service.
Do you supply EN 10204 3.1 or 3.2 certificates?
Yes. Every forging carries an EN 10204 3.1 mill certificate showing heat number, full chemical analysis, mechanical results, hardness and heat treatment records. EN 10204 3.2 certification witnessed by TUV, BV, SGS, DNV or Lloyd's Register is available on request. Tell us at enquiry stage, because it changes the lead time.
Sources, review status and how to cite this page
Composition and property data on this page come from the published specification and producer data for UNS N07725 and are given for engineering guidance. The values are not a warranty. What governs any order is the agreed specification and the material certificate issued with the forging.
- ASTM B805, Standard Specification for Precipitation Hardening Nickel Alloys Bar and Wire, for composition limits
- NACE MR0175 / ISO 15156-3, materials for use in H2S-containing environments in oil and gas production
- API 6ACRA, age-hardened corrosion-resistant alloys for oil and gas equipment
- ASME Code Case 2217, pressure-vessel application of the alloy
- EN 10204, metallic products, types of inspection documents
- EN 10228-3, SEP 1921, ASTM A388, ultrasonic examination of forgings
- Published producer and stockist data sheets for Alloy 725, for typical mechanical, physical, corrosion and machining values
Page maintained by the engineering and sales team at Jiangyin Jiangnan Metal Co., Ltd., an open-die forging factory in Jiangyin, Jiangsu, China. Last reviewed: . Corrections and technical questions are welcome at sales@steelforgepieces.com.
Cite this page
Jiangyin Jiangnan Metal Co., Ltd. "Inconel 725 Forgings (UNS N07725):
Composition, Properties and Forged Size Range." Jiangyin, Jiangsu, China.
Reviewed 19 August 2026.
https://www.steelforgepieces.com/Nickel-Alloy/Inconel-725.html