Waspalloy UNS N07001 Open Die Forging Parts & Seamless Rolled Rings Manufacturer
📋 Quick Summary
- Material: Waspalloy – Ni-Cr-Co-Mo age-hardenable superalloy (also known as UNS N07001)
- Main Products: Open die forgings, seamless rolled rings, forged bars, discs, turbine components
- Service Temperature: Up to 650°C (1200°F) continuous; 870°C (1600°F) highest
- Density: 8.19 g/cm³ | Elastic Modulus: 211 GPa | Tensile Strength: ≥1,103 MPa
- Main Industries: Aerospace, gas & steam turbines, nuclear power, oil & gas industries
- Standards: ASTM B 637, ASME SB-637, AMS 5704, AMS 5706, AMS 5707, ISO 9723–9725, ASTM E8/E10/E112
- Melting: VIM + ESR/VAR to get maximum purity and best traceability
Jiangsu Liangyi Co., Limited is a professional Waspalloy (UNS N07001) manufacturer of open die forgings and seamless rolled rings based in China. Our customers are mainly located in North America, Europe, and the Asia-Pacific region. Waspalloy is an age-hardenable nickel-based superalloy, it has great high-temperature strength, good oxidation resistance and corrosion resistance. Our Waspalloy forged parts are certified for critical high-temperature use up to 650°C (1200°F) continuous service and fully in accordance with AMS 5704, AMS 5706, AMS 5707, and ASME SB-637 international standards. As a leading Chinese Waspalloy manufacturer, we supply custom forgings for power generation, gas turbines, nuclear power, and aerospace industries, with an inspection report shipped together.
Waspalloy (UNS N07001) Forged Product – Custom Solutions for Global Industries
We produce a full range of UNS N07001 forged products in custom shapes and sizes to meet different industrial requirements:
- Bars & Rods: Round, square, flat, and hollow bars; UNS N07001 forged bars for high-temperature uses — also see our other nickel alloy forged bars
- Rings: Waspalloy forged rings and Waspalloy seamless rolled rings for steam and gas turbines
- Housings & Sleeves: Hubs, sleeves, bushes, and forged valve sleeves; turbine casings for power plants
- Discs & Plates: Steam turbine disc forgings, impellers, and nuclear power flanges
- Pipes & Tubes: Seamless pipes; UNS N07001 forged pipes for nuclear pressure systems
- Fasteners & Valve Parts: Waspalloy valve spindles, rods, and seats for power plant uses
- Custom Forgings: We can make forging parts 100% as per customers' drawings
Size Range
| Product Type | Size Range | Weight Range | Main Uses |
|---|---|---|---|
| Forged Bars / Rods | Ø 25 – 600 mm; Length up to 6,000 mm | 0.5 – 2,000 kg | Turbine shafts, spindles, fasteners |
| Seamless Rolled Rings | OD 100 – 3,000 mm; Height 50 – 600 mm | 1 – 5,000 kg | Turbine rings, flanges, casing rings |
| Discs & Impellers | Ø 100 – 1,500 mm; Thickness 20 – 500 mm | 1 – 3,000 kg | Steam turbine discs, compressor impellers |
| Seamless Pipes / Tubes | OD 25 – 500 mm; Wall 3 – 80 mm | 0.5 – 500 kg/m | Nuclear pressure lines, reactor components |
| Custom Open Die Forgings | Any shape per customer drawing | 0.1 – 10,000 kg | All industries — quote on request |
Waspalloy (UNS N07001) Forged Parts – Industrial Uses & Global Delivery Cases
Waspalloy forged parts are chosen for many industries because they can work well in high-temperature and have great corrosion resistance. The following cases approve the reliability of our parts in global markets.
1. Aerospace & Defense: Waspalloy Age-Hardenable Alloy Forgings
Our Waspalloy age-hardenable alloy forgings are widely used in commercial and military aerospace engines which require good strength-to-weight ratios and high-temperature stability up to 870°C (1600°F).
Case: We sold Waspalloy open-die forging shafts to a major engine maker that works with Boeing and Airbus. These forgings replaced Inconel and titanium alloys in earlier designs. They increased the mean time between overhauls (MTBO) by 30% and cut shaft elongation to <0.02% at 800°C. There have been no signs of fatigue cracks after 6 years of use. We have also made Waspalloy forged rings for Rolls-Royce aerospace engines that meet their most strict technical requirement.
2. Gas & Steam Turbines: UNS N07001 Turbine Forgings (North America & Europe)
We sell turbine blade forgings, turbine casings, impellers, and steam turbine disc forgings. Below are some main delivery cases:
- North America – US Power Plant: We sold gas turbine parts as per UNS N07001, such as Waspalloy seamless rolled rings, for a 500 MW CCGT plant in Texas. Waspalloy forgings can work continuously in 650°C; this helps cut down maintenance downtime by 40% and increase fuel efficiency by 3%.
- Europe – Germany Industrial Turbine: We provided custom Waspalloy forgings including valve parts and forged fasteners which were installed in chemical plant steam turbines. These parts had good oxidation resistance up to 870°C, their service life was more than 10 years (the 8-year target), fully accordance with EU industrial standards.
3. Nuclear Power: UNS N07001 Nuclear Power Forgings (Asia-Pacific & Global)
We are a qualified manufacturer of UNS N07001 nuclear power forgings, our main products are critical pressure-boundary parts accordance with international nuclear safety standards.
Case: We supplied Waspalloy forged nuclear power flanges, steam generator flowmeter bodies, and pressurizer surge line tubes for a Japanese nuclear power plant, they were manufactured by VIM and ESR melting to get the maximum purity. These parts were working well in the coolant system at 15 MPa and 320°C for 8 years and they were 100% accordance with Japanese nuclear regulations.
4. Gas Compressors & Petroleum: Nickel-Based Alloy Forgings (Middle East & Asia-Pacific)
Waspalloy is the best material for compressor rotors, turbine blade forgings, and seals used in high-pressure, high-temperature, corrosive environments.
Cases: We supplied Waspalloy open-die forging compressor rotors and forged valve sleeves used in offshore gas extraction for a Middle Eastern oil & gas company. These forgings were working in offshore conditions (550°C, salt-spray atmosphere) with zero measurable corrosion after 5 years. We have also supplied Waspalloy forged parts for reactors at a Singapore petrochemical plant, these parts kept full structural in hydrogen sulfide (H₂S) environments for over 7 years.
Material Properties of Waspalloy (UNS N07001) – High-Temperature Alloy Forgings
Main Advantages
- High tensile and yield strength at 650°C (1200°F) — ideal for Waspalloy turbine forgings
- Great oxidation and corrosion resistance — ideal for nuclear power pressure parts and offshore environments
- Good creep and stress-rupture — important for UNS N07001 gas turbine parts
- Adjustable strength by age-hardening (gamma-prime precipitation) — a main characteristic of Waspalloy
- Good ductility and toughness — long-term reliability of rotating Waspalloy steam turbine parts and valve parts
- High cobalt content (12–15%) — Better hot corrosion resistance vs standard Ni-Cr superalloys
Chemical Composition — wt.%
| Element | Min (%) | Max (%) | Element | Min (%) | Max (%) |
|---|---|---|---|---|---|
| Carbon (C) | 0.02 | 0.10 | Titanium (Ti) | 2.75 | 3.25 |
| Manganese (Mn) | — | 0.10 | Aluminum (Al) | 1.20 | 1.60 |
| Silicon (Si) | — | 0.15 | Zirconium (Zr) | 0.02 | 0.08 |
| Phosphorus (P) | — | 0.015 | Boron (B) | 0.003 | 0.010 |
| Sulphur (S) | — | 0.015 | Iron (Fe) | — | 2.00 |
| Chromium (Cr) | 18.00 | 21.00 | Copper (Cu) | — | 0.10 |
| Cobalt (Co) | 12.00 | 15.00 | Nickel (Ni) | Remainder (Balance) | |
| Molybdenum (Mo) | 3.50 | 5.00 | — | — | — |
Mechanical Properties (82.5 mm / 3.25 in Cross-Section, Heat Treated)
| Property | Minimum Value | Test Standard |
|---|---|---|
| Tensile Strength | 160,000 psi (1,103 MPa) | ASTM E8 |
| 0.2% Offset Yield Strength | 110,000 psi (758 MPa) | ASTM E8 |
| Elongation (2 in / 50 mm) | 15% | Also valid for 4D gauge |
| Reduction of Area | 18% | ASTM E8 |
| Brinell Hardness (HB) | 321 – 403 HB | ASTM E10; waived if tensile OK |
Tensile properties are for both longitudinal and transverse directions, normally used to make large Waspalloy forged rings and UNS N07001 forged bars.
Physical Properties of Waspalloy (UNS N07001)
| Property | Value | Unit |
|---|---|---|
| Density | 8.19 | g/cm³ |
| Elastic Modulus (Young's Modulus) | 211 | GPa (30,600 ksi) |
| Shear Modulus | 80 | GPa |
| Poisson's Ratio | 0.30 | — |
| Thermal Conductivity (21°C) | 11.2 | W/m·K |
| Specific Heat Capacity | 435 | J/kg·K |
| CTE (70–1000°F / 21–538°C) | 12.7 | µm/m·°C |
| Electrical Resistivity | 123 | µΩ·cm |
| Melting Range | 1330 – 1355 | °C (2426–2471°F) |
Stress-Rupture Properties
Tested per ASTM E139 (smooth specimens) and ASTM E292 (notched specimens):
| Test Temperature | Test Stress | Min. Duration (No Rupture) | Min. Post-Rupture Elongation |
|---|---|---|---|
| 1,350°F (732°C) | 75,000 psi (517 MPa) | 23 hours | 8% (4D) |
| 1,500°F (815°C) | 40,000 psi (276 MPa) | 23 hours | 5% (4D) |
Note: Incremental loading is acceptable (5,000 psi increases every 8–16 hours after 23-hour hold), subject to purchaser's approval.
Grain Size
ASTM No. 3 or finer per ASTM E112; occasional grains of size 1 are permitted — important for Waspalloy seamless rolled rings and Waspalloy forged turbine rings.
Waspalloy vs Inconel 718 vs Haynes 282 – Superalloy Forging Comparison
The choice of the right superalloy for high-temperature forgings depends on temperature, corrosion environment, and weldability requirements. The table below compares Waspalloy (UNS N07001) with the two most commonly alternatives — Inconel 718 (UNS N07718) and Haynes 282 (UNS N07208) — by main parameters for forging used:
| Property / Criterion | Waspalloy (UNS N07001) | Inconel 718 (UNS N07718) | Haynes 282 (UNS N07208) |
|---|---|---|---|
| UNS / AISI Designation | N07001 | N07718 | N07208 |
| Max Continuous Service Temp | 650°C (1200°F) | 620°C (1150°F) | 649°C (1200°F) |
| Tensile Strength (min, heat treated) | 1,103 MPa (160 ksi) | 1,276 MPa (185 ksi) | 1,000 MPa (145 ksi) |
| Yield Strength (0.2% offset, min) | 758 MPa (110 ksi) | 1,034 MPa (150 ksi) | 700 MPa (102 ksi) |
| Stress-Rupture Life (650°C) | Superior (23 hr+ at 517 MPa) | Good | Excellent |
| Hot Corrosion Resistance | Excellent (Co 12–15%) | Good | Excellent |
| Weldability | Moderate | Excellent | Very Good |
| Density | 8.19 g/cm³ | 8.19 g/cm³ | 8.27 g/cm³ |
| Main Forging Standard | ASTM B 637 / AMS 5704 | AMS 5662 / AMS 5664 | AMS 5951 |
| Best For | Aerospace shafts, nuclear pressure parts, turbine rings at 650°C | Lower-temp turbine discs, structural parts, weld assemblies | Advanced turbine blades, 650°C+ creep uses |
Legend: Green = advantage for that alloy in that parameter. Yellow = same performance.
As most uses requires continuous 650°C service and nuclear-grade purity, Waspalloy (UNS N07001) is the preferred choice. Contact us to discuss material choice for your specific use — see check our full nickel alloy materials range.
Heat Treatment Process for Waspalloy (UNS N07001) Forged Parts
The mechanical properties of Waspalloy forged parts are directly dependent on a precisely controlled heat treatment sequence. We perform a strict three-stage heat treatment for all our UNS N07001 forged bars, Waspalloy seamless rolled rings, that is temperature, time, and cooling rate are fully recorded and traceable — to get the best gamma-prime precipitation hardening.
| Stage | Process | Temperature | Hold Time | Cooling | Purpose |
|---|---|---|---|---|---|
| Stage 1 | Solution Heat Treatment | 995–1035°C (1825–1900°F) | 4 hr ±0.5 | Oil or water quench | Dissolve precipitates; homogenize matrix |
| Stage 2 | Stabilization Heat Treatment | 845°C ±8°C (1550°F) | 4 hr ±0.5 | Air cool | Stabilize grain boundary carbides; reduce stress |
| Stage 3 | Precipitation (Aging) Heat Treatment | 760°C ±8°C (1400°F) | 16 hr ±1 | Air cool | Precipitate γ' (gamma-prime) phase; maximize strength |
Quality Inspection: All our Waspalloy (UNS N07001) forged parts pass heat treatment inspection(QC Report No.: HT20240523-2).
Production & Inspection Standards for Waspalloy (UNS N07001) Forgings
Our entire production chain — from raw material melting to final inspection — strictly checked to meet standards of US, EU, and Asia-Pacific.
Production Standards
| Standard Body | Standard Numbers | Scope |
|---|---|---|
| ASTM International | ASTM B 637, ASME SB-637 | Main standard for precipitation-hardening nickel alloy bars, forgings, and rings |
| ISO | ISO 9723–9725 | Nickel alloy forgings – general requirements |
| AMS (SAE) | AMS 5704, AMS 5706, AMS 5707, AMS 5828 | Aerospace material specifications for Waspalloy bars, forgings, and rings |
| AECMA (Aerospace) | PrEN 2193–2194, 2406, 2958–2959, 3220 | European aerospace standards for nickel alloy forgings |
Inspection & Quality Control Standards
AMS 2261, 2269, 2350, 2371, 2374–2375, 2806, 2808, 7490 and ASTM E8, E10, E112, E139, E292, E354, covering tensile testing, hardness, grain size, stress-rupture, and chemical analysis.
Forging Quality Requirements
Make sure all Waspalloy (UNS N07001) forged parts defect-free (no cracks, flakes, segregation, or non-metallic inclusions). We use VIM (Vacuum Induction Melting) and VAR/ESR (Vacuum Arc Remelting / Electroslag Remelting) — traceable by heat number — to get high-purity material required for nuclear power pressure parts and Waspalloy turbine forgings. Every order will provide grain size, mechanical property, and chemical composition test reports.
Lead Time & Delivery
Normal lead time for standard Waspalloy forged bars and seamless rolled rings is 4–8 weeks from order confirmation. For fully custom open die forgings requiring special tooling or large diameters (>800 mm), lead time is 8–14 weeks. All orders ship with full material test reports (MTR) covering chemical composition, mechanical properties, heat treatment records, and non-destructive testing (NDT) results. We normally ship to the US (via LA/NY ports), Germany (Hamburg), Japan (Yokohama), and Singapore.
Why Our Waspalloy (UNS N07001) Forged Parts?
| Advantage | Details |
|---|---|
| Rich Experience | We have been producing nickel-based alloy forgings and Waspalloy open die forging since being established in 1997, we have rich experience supplying turbine and nuclear power customers worldwide |
| Global Standards | All UNS N07001 forgings meet ASTM, ISO, AMS, and AECMA standards — accepted in US, EU, and Asia-Pacific markets |
| Fully Custom | We can make Waspalloy forged parts per customers' drawings in any shape, size— from single prototypes to bulk production |
| High-Temperature Performance | Our Age-hardenable Waspalloy parts rated for 650°C has records of more than 6+ years durability |
| 100% Quality Inspection | Full defect inspection and mechanical property test — especially critical for nuclear power pressure parts |
| Supply Chain | In-house capability from forging to heat treatment and final inspection — reducing lead times for global partners |
| High-Purity Melting | VIM + ESR/VAR melting makes sure material purity meet aerospace and nuclear standards; traceable by heat number |
| Lead Time | 4–8 weeks (standard); 8–14 weeks (fully custom) |
Frequently Asked Questions – Waspalloy (UNS N07001) Forged Parts
Waspalloy is a nickel-based age-hardenable superalloy known as UNS N07001 and . It contains about 58% Ni, 19.5% Cr, 13.5% Co, and 4.3% Mo, with titanium (2.75–3.25%) and aluminum (1.20–1.60%) which form the strengthening gamma-prime (γ') precipitate phase during aging. Density is 8.19 g/cm³. It offers good high-temperature tensile strength (≥1,103 MPa after heat treatment), creep resistance, oxidation resistance, and corrosion resistance up to 870°C (1600°F) short-term and 650°C (1200°F) for continuous industrial use.
We supply a full range of Waspalloy forged products including bars and rods (Ø 25–600 mm), seamless rolled rings (OD 100–3,000 mm), discs, impellers, housings, sleeves, pipes, tubes, fasteners, valve parts, and fully custom open die forgings per customers' drawings. All products are manufactured per ASTM B 637, AMS 5704–5709, and ISO 9723–9725.
Waspalloy forged parts works continuously at up to 650°C (1200°F) and can withstand short-term peaks up to 870°C (1600°F). Tensile strength remains ≥1,103 MPa (160,000 psi) after full three-stage heat treatment, with creep resistance better than standard austenitic stainless steels and Inconel 600.
Waspalloy requires three-stage heat treatment: (1) Solution Treatment at 995–1035°C for 4 hours, oil/water quench; (2) Stabilization at 845°C ±8°C for 4 hours, air cool; (3) Precipitation Aging at 760°C ±8°C for 16 hours, air cool. This makes sure good gamma-prime precipitate structure: tensile strength ≥1,103 MPa, hardness 321–403 HB.
Waspalloy (UNS N07001) vs Inconel 718 (UNS N07718): Waspalloy contains 12–15% cobalt with better hot corrosion resistance and better stress-rupture life above 650°C. Inconel 718 offers higher room-temperature tensile strength (1,276 MPa vs 1,103 MPa) and better weldability, making it best choices for used below 650°C. For aerospace turbine shafts, nuclear pressure parts, and gas turbine rings at continuous 650°C, Waspalloy is generally the best choice. See our full superalloy comparison table above.
Our Waspalloy forgings are according to: ASTM B 637 (primary), ISO 9723–9725, AMS 5704–5709, AMS 5828, MAM 5706, and AECMA PrEN 2193–2194 / 2406 / 2958–2959 / 3220. Inspection per AMS 2261, 2269, 2350, 2371, 2374–2375, 2806, 2808, 7490 and ASTM E8, E10, E112, E139, E292, E354.
Waspalloy's (UNS N07001) main physical properties: Density 8.19 g/cm³; Elastic modulus 211 GPa (30,600 ksi) at room temperature; CTE 12.7 µm/m·°C (70–1000°F range); Thermal conductivity 11.2 W/m·K at 21°C; Specific heat 435 J/kg·K; Melting range 1330–1355°C. See full physical properties table above.
Yes. We can make custom Waspalloy open die forgings and seamless rolled rings 100% per customer drawings and technique manuals. We accept any order size from single prototypes to bulk production.Lead time: 4–8 weeks (standard), 8–14 weeks (large/complex). Please send drawings, material specification, quantity, and delivery requirements to [email protected] or WhatsApp +86-13585067993.
Technical Glossary – Waspalloy Forging
- Open Die Forging
- A forging process is where metal is shaped between flat or simple contoured dies that do not completely enclose the workpiece. Suitable for large, simple-geometry Waspalloy parts such as shafts, bars, and discs.
- Seamless Rolled Ring
- A ring forging produced by a ring rolling process, creating a grain flow that follows the ring contour for good mechanical properties. Used for turbine casings, flanges, and casing rings in UNS N07001.
- Age-Hardenable (Precipitation Hardening)
- A heat treatment strengthening mechanism in Waspalloy where titanium and aluminum form the gamma-prime (γ') precipitate phase at 760°C, significantly increasing tensile and yield strength. This is the main characteristic of UNS N07001.
- VIM (Vacuum Induction Melting)
- A main melting process in which raw materials are melted in a vacuum induction furnace to minimize oxidation and gas content. Required for aerospace and nuclear-grade Waspalloy ingots.
- ESR (Electroslag Remelting)VAR (Vacuum Arc Remelting)
- Secondary remelting processes after VIM. It can further reduce inclusions, segregation, and improve microstructural homogeneity. VIM + ESR or VIM + VAR is necessary for nuclear-grade UNS N07001 forgings.
- Gamma-Prime (γ') Phase
- The main strengthening precipitate in Waspalloy, formed by ordered Ni₃(Al,Ti) particles coherently embedded in the nickel matrix. Its volume fraction and distribution determine the high-temperature strength and creep resistance of Waspalloy forged parts.
- MTBO (Mean Time Between Overhauls)
- A metric for aerospace engine parts, it means the average operating time between scheduled maintenance or part replacement. Waspalloy forging shafts have increased MTBO by 30% versus prior materials per record.
Contact Us | Waspalloy (UNS N07001) Forged Parts Supplier
With professional manufacturing capabilities, strict quality control, and a good track record of global deliveries, Jiangsu Liangyi Co., Limited supplies high-quality Waspalloy (UNS N07001) forged parts worldwide for aerospace, turbine, nuclear power, and oil & gas industries. For custom forgings, quotations, or other need, contact us via the Contact Us page or directly:
Jiangsu Liangyi Co., Limited
Address: Chengchang Industry Park, Jiangyin City, Jiangsu Province, 214400, China
Tel: 0086-510-86107550
Fax: 0086-510-86107550
WhatsApp: +86-13585067993
Email: [email protected]
Website: www.jnmtforgedparts.com
Related Nickel Alloy Forged Materials
In addition to Waspalloy (UNS N07001) forgings, we also manufacture forged parts in other high-performance nickel-based alloys for different industrial requirements: