Udimet® 520 Superalloy
Source£ºhttp://www.zytcsteel.com Time£º2026/8/15 10:13:22 View£º
Precipitation Hardening Nickel Superalloy | ZYTC Alloy
ZYTC Alloy, a professional Chinese manufacturer and supplier of premium aerospace-grade nickel-based superalloys, offers high-performance Udimet® 520 precipitation-hardenable wrought nickel superalloy products including bars, plates and forgings. As an upgraded high-temperature alloy optimized to remedy the performance limitations of traditional Udimet 500, Udimet 520 delivers exceptional high-temperature mechanical stability, superior corrosion resistance and excellent hot workability. Widely used in aviation, aerospace and industrial gas turbine hot-section components, this alloy is a reliable solution for long-term service under extreme high-temperature and high-stress operating environments.
Material Overview & Core Advantages
Udimet® 520 is a vacuum-melted, precipitation-hardening nickel-based superalloy engineered for outstanding structural stability in elevated-temperature environments. It is specifically designed for continuous service within 760¡ãC to 927¡ãC (1400¡ãF¨C1700¡ãF), exhibiting excellent tensile properties, creep resistance, stress rupture strength and fatigue performance. Compared with conventional Udimet 500 alloy, Udimet 520 features upgraded ductility, thermal stability and comprehensive mechanical performance, solving many high-temperature strength and processability shortcomings of its predecessor.
The alloy maintains highly stable mechanical behavior at room temperature and below 760¡ãC, with excellent oxidation resistance, thermal processing performance and structural durability, making it ideal for critical hot-end components requiring long-cycle and high-load operation.
Standard Mechanical Properties
Udimet 520 achieves an optimal balance of ultra-high strength and ductility at both room and elevated temperatures, with stable and repeatable mechanical indicators:
|
Test Temperature
|
Tensile Strength (Kg/mm²)
|
Yield Strength (Kg/mm²)
|
Elongation (%)
|
|---|---|---|---|
|
Room Temperature
|
127.6
|
82.2
|
14
|
|
730¡ãC
|
108.9
|
74.5
|
15
|
Chemical Composition
Element
Content (%)
Nickel, Ni
52.18-59.976
Chromium, Cr
18.0-20.0
Cobalt, Co
11.0-14.0
Molybdenum, Mo
5.50-7.00
Titanium, Ti
2.90-3.25
Aluminum, Al
1.80-2.30
Tungsten, W
0.800-1.20
Carbon, C
0.0200-0.0600
Boron, B
0.00400-0.0100
Physical Properties
Properties
Metric
Imperial
Density
8.21 g/cm³
0.297 lb/in³
Melting point
1371¡ãC
2500¡ãF
Mechanical Properties
Tensile strength (@950¡ãC/1740¡ãF)
Properties
Metric
Imperial
350 MPa
50800 psi
Yield strength (@strain 0.200%, temperature 850¡ãC/@strain 0.200%, temperature 1560¡ãF)
500 MPa
72500 psi
Elongation at break (@50¡ãC/122¡ãF)
100%
100%
Fabrication Performance & Processability
One of the most prominent advantages of Udimet 520 is its excellent comprehensive processability, including superior forgeability, formability, weldability and machinability, allowing flexible manufacturing of complex precision components.
1. Forging & Forming
Udimet 520 retains good ductility at high temperatures and supports stable hot forging production. Conventional metal forming methods can be applied easily. With reasonable equipment power and professional processing parameters, the alloy avoids high-temperature embrittlement and maintains uniform structural performance after forming.
2. Cold Working
Standard cold forming procedures are applicable for Udimet 520. To prevent surface galling and improve forming quality, heavy-duty lubricants and soft die materials are recommended. Tooling with generous radii and clearances can effectively optimize cold forming results and reduce material stress concentration.
3. Welding Performance
Udimet 520 supports multiple mature welding processes, including GTAW (Gas Tungsten Arc Welding), GMAW (Gas Metal Arc Welding) and SMAW (Shielded Metal Arc Welding). Before welding, the material surface must be thoroughly cleaned to remove paint, oil, crayon marks and other contaminants to ensure high-quality, defect-free weld joints with stable strength and corrosion resistance.
4. Machinability
Although Udimet 520 can be machined with conventional cutting tools, it features high strength, slight gumminess and work-hardening characteristics. For milling, turning and grinding operations, water-based coolant is strongly recommended. For drilling, boring, broaching and tapping, heavy-duty lubricants are required. Professional rigid tooling and stable equipment operation can effectively minimize work-hardening influence and machining chatter.
Professional Heat Treatment Process
Udimet 520 obtains its peak high-temperature strength and structural stability through standardized annealing and multi-stage aging hardening treatment.
Annealing Treatment
Heat at 1107¡ãC (2025¡ãF), followed by rapid air cooling to refine grain structure and homogenize material properties.
Multi-Stage Aging Hardening
Udimet 520 achieves graded precipitation strengthening via three-step air cooling aging treatment:
- 1107¡ãC (2025¡ãF) / 4 hours, air cool
- 843¡ãC (1550¡ãF) / 24 hours, air cool
- 760¡ãC (1400¡ãF) / 16 hours, air cool
After complete heat treatment, the alloy forms uniform precipitated phases, significantly improving high-temperature creep resistance, fatigue strength and lasting structural stability.
Product Supply Range at ZYTC Alloy
ZYTC Alloy provides full-spec Udimet 520 superalloy products, including Udimet 520 bars, plates and custom forgings. We maintain standard-size inventory for fast delivery and support non-standard custom processing according to customer drawings. Every batch is strictly inspected with complete MTR certificates and available third-party testing to ensure full material traceability and quality compliance.
Key Applications
With excellent high-temperature strength, thermal stability and processability, Udimet 520 is widely adopted in high-end aerospace, defense and energy industries:
- Gas Turbine Components: Aircraft and land-based gas turbine blades, turbine discs and hot-section structural parts
- Aerospace & Defense: Jet engine core parts, missile body structures and rocket high-temperature components
- Industrial High-Temperature Parts: High-temperature bolts, pistons and durable thermal forming molds
Why Choose ZYTC Alloy Udimet 520 Superalloy
As a professional Chinese supplier of aerospace nickel-based superalloys, ZYTC Alloy strictly implements vacuum smelting, standardized heat treatment and precision machining for all Udimet 520 products. We guarantee stable microstructure, consistent mechanical performance and reliable high-temperature service life. With complete production certification, flexible customization capability and stable global supply capacity, we have long-term cooperation with global aerospace, energy and high-end manufacturing clients.
Contact ZYTC Alloy today to get Udimet 520 technical datasheets, heat treatment guidelines and competitive factory wholesale quotes!
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