Hangbo Alloy Group
Shanghai · Est. 2012
UNS N07500 / W.Nr. 2.4886 — Chemical composition, mechanical properties, temperature limits, corrosion resistance, and applications for engineers and procurement professionals.
Udimet 500 (UNS N07500 / W.Nr. 2.4886) is a precipitation-hardened nickel-chromium-cobalt superalloy strengthened by additions of aluminum, titanium, and molybdenum. Developed for high-temperature structural applications, Udimet 500 offers an excellent balance of tensile strength, creep-rupture resistance, and metallurgical stability up to about 870 °C. It is widely used for gas turbine blades, discs, rings, bolts, and other rotating components where resistance to thermal and mechanical fatigue is critical.
The chemical composition of Udimet 500 is carefully controlled to balance high-temperature strength, corrosion resistance, and fabricability. The primary strengthening and corrosion-resisting elements are tightly specified in applicable aerospace and ASTM standards.
| Element | Min % | Max % |
|---|---|---|
| Nickel (Ni) | Balance | Balance |
| Chromium (Cr) | 17.0 | 20.0 |
| Cobalt (Co) | 18.0 | 20.0 |
| Molybdenum (Mo) | 3.25 | 4.00 |
| Aluminum (Al) | 2.75 | 3.25 |
| Titanium (Ti) | 2.75 | 3.25 |
| Iron (Fe) | — | 4.0 |
| Carbon (C) | 0.06 | 0.16 |
| Boron (B) | 0.003 | 0.010 |
| Zirconium (Zr) | 0.02 | 0.08 |
| Manganese (Mn) | — | 1.0 |
| Silicon (Si) | — | 1.0 |
| Sulfur (S) | — | 0.015 |
| Phosphorus (P) | — | 0.015 |
Udimet 500 exhibits a stable microstructure that retains useful physical properties across a wide temperature range, supporting its use in thermally cyclic and high-temperature applications.
| Property | Value | Unit |
|---|---|---|
| Density | 8.05 | g/cm3 |
| Melting Point | 1288-1357 | °C |
| Specific Heat (21 °C) | 419 | J/kg·K |
| Thermal Conductivity (21 °C) | 11.3 | W/m·K |
| Electrical Resistivity (21 °C) | 1.21 | μΩ·m |
| Modulus of Elasticity (21 °C) | 210 | GPa |
| Mean Coefficient of Thermal Expansion (21-760 °C) | 14.0 | μm/m·°C |
Mechanical properties depend on product form and heat treatment condition. Values below represent typical solution-treated and aged bar or forging stock.
| Property | Value |
|---|---|
| Tensile Strength | 1310 MPa (190 ksi) |
| Yield Strength (0.2% offset) | 930 MPa (135 ksi) |
| Elongation in 2 inches | 22% |
| Reduction of Area | 28% |
| Hardness (Rockwell C) | 35-40 HRC |
| Charpy V-Notch Impact | 24 J |
Udimet 500 maintains high strength and creep resistance at elevated temperatures, making it suitable for gas turbine hot-section and aerospace structural components.
| Temperature (°C) | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| 21 (Room) | 1310 | 930 | 22 |
| 538 | 1170 | 840 | 20 |
| 649 | 1030 | 760 | 19 |
| 760 | 760 | 620 | 21 |
| 871 | 480 | 410 | 28 |
| 982 | 220 | 170 | 35 |
Udimet 500 provides reliable corrosion resistance in a range of aggressive environments. Performance is governed by the alloy's chromium, molybdenum, cobalt, and nickel contents and by the protective surface oxides formed during service.
The combination of high strength, temperature capability, and environmental resistance makes Udimet 500 suitable for demanding industrial and aerospace applications:
Hangbo Alloy Group manufactures and supplies Udimet 500 in the following product forms, conforming to ASTM, AMS, and other applicable specifications:
| Standard | Description |
|---|---|
| AMS 5880 | Bars, Forgings, and Rings, 19% Co, 20% Cr, 4% Mo, 3% Al, 3% Ti |
| AMS 5881 | Investment Castings |
| DIN 2.4886 | Wrought nickel-cobalt-chromium superalloy |
| UNS N07500 | Unified Numbering System designation |
Udimet 500 is a precipitation-hardened nickel-chromium-cobalt superalloy used for high-temperature gas turbine components requiring creep and fatigue resistance.
It contains approximately 18-20% chromium, 18-20% cobalt, 3.25-4% molybdenum, 2.75-3.25% aluminum, and 2.75-3.25% titanium, with nickel as the balance.
Solution-treated and aged bar typically exhibits tensile strength around 1310 MPa (190 ksi) at room temperature.
A typical treatment involves solution treatment at 1080 °C, air cool, stabilization at 843 °C, and aging at 760 °C to develop gamma-prime (Ni3(Al,Ti)) precipitation.
AMS 5880, AMS 5881, UNS N07500, and DIN W.Nr. 2.4886.
Udimet 500 is generally used up to about 870 °C for rotating components; short-term exposure may reach 980 °C.
Udimet 720 has higher creep strength and a higher gamma-prime volume fraction, making it better for the most demanding disc applications; Udimet 500 offers good all-round performance and is easier to process.
Round bar, rod, forgings, rings, discs, limited plate/sheet, and wire.
It can be welded using inert-gas processes with matching or nickel-base filler, but heat-affected-zone cracking must be controlled through preheat, interpass temperature, and post-weld heat treatment.
Density is about 8.05 g/cm3 and the melting range is 1288-1357 °C.
Aerospace-grade bar and forgings typically require 6-12 weeks; MOQs vary from 50 kg for standard sizes to custom lot quantities for forgings.
Aerospace and industrial gas turbines, rocket propulsion, nuclear high-temperature bolting, and hot-work tooling.
Hangbo Alloy Group maintains supply channels for Udimet 500 in standard and custom product forms. We provide mill test certificates, third-party inspection reports (SGS, TUV), and custom processing services including cutting, machining, grinding, and surface finishing.
For quotations, material certifications, or technical consultation, contact our sales team or call +86-136-1165-6360. We typically respond within 10 minutes.
Request a quotation for Udimet 500 round bars, tubes, plates, or forgings. We stock standard sizes and accept custom orders.