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Model No: Rene 80
Rene 80 / K480
Lork Group supplies Rene 80 / K480 cast alloy bars, accompanied by a comprehensive Certified Material Test Report (CMTR) tailored to your requirements—including chemical composition, mechanical properties, an assessment of the γ′ phase volume fraction, and non-destructive testing (NDT) data.
Quantity :
Product Introduction
Nickel-based precipitation-hardened equiaxed-grain alloy | For long-term service at 950°C | Designed for gas turbine blades/guide vanes | Cast alloy bars
Rene 80 was originally developed for gas turbine blades in aero-engines. It is a nickel-based, precipitation-hardened, equiaxed-grain superalloy.
Who is buying it?
- Do your gas turbine blades or vanes need to operate for extended periods below 950°C while enduring hot corrosion and complex stress?
- Are you currently using K438 or K403 alloys for hot-section components in aero-engines, but find their temperature resistance insufficient—are you looking for an upgrade?
- Do your petrochemical cracking furnace tubes or heat-treatment fixtures require microstructural stability above 900°C, yet you wish to avoid the high costs of directionally solidified or single-crystal alloys?
If your components operate below 800°C, K438 or K403 may be a more economical choice. Conversely, if your components must withstand temperatures exceeding 1000°C, equiaxed alloys have reached their limit; in such cases, you should consider directionally solidified alloys (like DZ422) or single-crystal alloys.
Chemical Composition
The alloy design philosophy for Rene 80 / K480 is clear: chromium and cobalt are used to stabilize the matrix and provide corrosion resistance, while aluminum and titanium are employed to generate a sufficient volume fraction of the γ′ strengthening phase.
Typical chemical composition range (wt%):
| Material Type | C | Mo | W | Ni | Cr | Co | Ti | Ai | B&Zr |
|---|---|---|---|---|---|---|---|---|---|
| Rene 80 | 0.15 - 0.19 | 3.7 - 4.3 | 3.7 - 4.3 | Balance | 13.7 - 14.7 | 9.0 - 10.0 | 4.8 - 5.2 | 2.8 - 3.2 | Trace amount |
Mechanical Properties
The performance of Rene 80 (K480) is not inherent in the as-cast state; it requires a comprehensive heat treatment process to"tune"the γ′ phase to its optimal condition. Ultimately, it is this heat treatment process that determines the final performance of Rene 80. Typical mechanical properties (after heat treatment):
| Creep-rupture life at 871°C / 310 MPa | Elongation | Tensile strength at room temperature | Yield strength at room temperature | Long-term operating temperature |
|---|---|---|---|---|
| 170 hours | 5-8% | ≥ 1040 MPa | ≥ 950 MPa | 760 - 982℃ |
⚠️Standard heat treatment procedure (for reference):
Solution treatment: 1204°C / 2h, followed by controlled cooling to 1093°C
Intermediate treatment: 1093°C / 4h
Aging: 843°C / 16h (or optimized at 871°C / 16h)
Solution treatment: 1204°C / 2h, followed by controlled cooling to 1093°C
Intermediate treatment: 1093°C / 4h
Aging: 843°C / 16h (or optimized at 871°C / 16h)
Key Insight: Academic research clearly indicates that lowering the aging temperature increases the volume fraction of the γ′ phase, thereby enhancing strength. Aging at 871°C yields superior strength and creep-rupture life compared to aging at 913°C. If you are purchasing as-cast blanks and performing the heat treatment yourself, the choice of aging temperature will directly influence the final material properties.
Purchasing Advice: Form and Condition Determine How You Buy
If you require investment-cast blades/guide vanes:
- What to purchase: Investment-cast blanks (that have undergone solution treatment) or finished castings.
- Key Requirements: Suppliers must provide a casting process qualification report, X-ray/fluorescent penetrant inspection (FPI) reports, and an γ′ phase volume fraction assessment
⚠️Note: Porosity, shrinkage, and hot cracking are the primary causes of failure in castings. Aerospace-grade castings must undergo radiographic inspection in accordance with standards such as AMS 2175.
If you require bars or powder for in-house machining or additive manufacturing (printing):
- What to purchase: Cast alloy bars (for machining) or spherical powder (for additive manufacturing).
- Powder specifications: 15–53 μm (for SLM) or 45–105 μm (for DED/laser cladding).
⚠️Key requirements: The powder must come with data on oxygen content, sphericity, flowability, and particle size distribution.
If you purchase as-cast blanks and intend to perform the heat treatment yourself:
- You must verify whether the supplier has already carried out a solution treatment. If the blanks are in an"as-cast"state (i.e., no solution treatment has been performed), since the γ′ phase and eutectic structures have not yet been eliminated, there is a high risk involved in carrying out the solution treatment on your own (if the temperature is too low, segregation will not be eliminated; if it is too high, grain coarsening will occur).
⚠️Recommendation: Have the supplier complete the solution treatment and aging process, and limit your own scope to precision machining.
If you are interested, please get in touch with us!
📞Consultation hotline: [+86 175 1308 1871]
📧 Email: [daisy@lorkgroup.com]
💬 WhatsApp: [+86 175 1308 1871]
📧 Email: [daisy@lorkgroup.com]
💬 WhatsApp: [+86 175 1308 1871]
