Nickel Alloy Rene 80 80H
Grade
also 5401
80H = rene 80H
Hf-bearing modification (~0.7–1.2 % Hf) chosen for improved casting ductility, hot-tear resistance and coating adherence.
Values for the 80H condition
Other Rene 80 tempers and conditions
Rene 80 is listed in 5 conditions; see the grade overview at Rene 80.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Spheroidize annealed | Pick for non-critical hardware or as the intermediate state before solution/age; coarse as-cast γ′ gives lower ductility and rupture life. | 780 | 900 | 4 | 36 HRC | 1.3 % IACS |
Directionally solidified + full heat treatment | Columnar-grain casting for higher thermal-fatigue life and transverse-free creep loading in axial turbine blades. | 840 | 1,000 | 11 | 38 HRC | 1.3 % IACS |
80HThis page Rene 80H | Hf-bearing modification (~0.7–1.2 % Hf) chosen for improved casting ductility, hot-tear resistance and coating adherence. | 840 | 1,010 | 9 | 38 HRC | 1.3 % IACS |
HTDefault Full heat treatment | Standard supply condition for equiaxed investment-cast blades and vanes — optimum γ′ size distribution and creep-rupture life. | 855 | 1,030 | 6 | 39 HRC | — |
Hot isostatic pressing then full heat treatment | Choose when microporosity must be closed for maximum LCF/creep-rupture scatter control in flight-critical blades. | 870 | 1,070 | 9 | 39 HRC | 1.3 % IACS |
What is Rene 80 80H?
Rene 80 80H is Rene 80 in the 80H grade — hf-bearing modification (~0.7–1.2 % Hf) chosen for improved casting ductility, hot-tear resistance and coating adherence. Rene 80 80H has a yield strength of 840 MPa (122 ksi) and a tensile strength of 1,010 MPa (146 ksi) — stronger than 89% of nickel alloy grades. Elongation at break is 9% and the elastic modulus is 200 GPa (29 Msi). Rene 80 80H has a density of 8.19 g/cm³ (0.296 lb/in³), lighter than 68% of nickel alloy grades. It melts at 1,260°C (2,300 °F). HT is the default condition FabDigit quotes; 80H is available on request or by drawing note.
Advantages
- High strength — 840 MPa (122 ksi), better than 89% of nickel alloy grades
Limitations
- Limited formability — 3/100, worse than 97% of nickel alloy grades
- Difficult to machine — 10/100, worse than 93% of nickel alloy grades
- Difficult to weld — 12/100, worse than 90% of nickel alloy grades
- High embodied carbon — 15 kg CO₂/kg, worse than 87% of nickel alloy grades
- Limited ductility — 9%, worse than 86% of nickel alloy grades
Rene 80 80H properties
Typical room-temperature values for Rene 80 80H; 24 are specific to this condition. Other listed values are Rene 80 reference data and may not represent this condition. Bars are the position among nickel alloy grades.
Physical3
Rene 80 80H has a density of 8.19 g/cm³ (0.296 lb/in³), lighter than 68% of nickel alloy grades. It melts at 1,260°C (2,300 °F).
Mechanical14
Rene 80 80H has a yield strength of 840 MPa (122 ksi) and a tensile strength of 1,010 MPa (146 ksi) — stronger than 89% of nickel alloy grades. Elongation at break is 9% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
Rene 80 80H is rated for continuous service to 980°C (1,796 °F). It conducts heat at 10.5 W/m·K (6.07 BTU/hr·ft·°F), worse than 73% of nickel alloy grades. Thermal expansion is 11.5 µm/m·K (6.39 µin/in·°F).
Electrical3
Rene 80 80H conducts electricity at 1.3 % IACS, worse than 89% of nickel alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (70/100), worse than 77% of nickel alloy grades.
Sustainability4
Producing a kilogram of Rene 80 80H takes about 230 MJ of energy and emits 15 kg of CO₂ — more than 91% of nickel alloy grades. Typical recycled content is 25%.
Manufacturability8
Rene 80 80H's machinability is not recommended (10/100, worse than 93% of nickel alloy grades); weldability not recommended (12/100); formability not recommended (3/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Rene 80 80H
Is Rene 80 easy to machine?
Very difficult — creep-feed grinding, EDM and ECM dominate; if turning/milling, use rigid setups, ceramic or coated carbide at low speed with heavy flood coolant.
Can Rene 80 be welded?
Poor fusion weldability due to ~45 % γ′; repair only by pre-heat/hot-box GTAW with ductile Ni fillers, laser cladding or wide-gap TLP brazing, followed by full re-heat treatment.
Can Rene 80 be formed, bent or molded?
Not forgeable or formable — vacuum investment casting (equiaxed or DS) with controlled shell preheat and grain refinement; HIP recommended to close microporosity.
What surface finishes work on Rene 80?
Grit blast plus chemical/abrasive-flow deburring; service parts receive aluminide or Pt-aluminide diffusion coatings, MCrAlY overlays and thermal barrier ceramic topcoats — no anodizing.
Rene 80 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Cr | 13.7 – 14.3 | 14 |
| Co | 9 – 10 | 9.5 |
| Mo | 3.7 – 4.3 | 4 |
| W | 3.7 – 4.3 | 4 |
| Ti | 4.7 – 5.3 | 5 |
| Al | 2.8 – 3.2 | 3 |
| C | 0.15 – 0.19 | 0.17 |
| B | 0.01 – 0.02 | 0.02 |
| Zr | 0.02 – 0.1 | 0.03 |
| Hf0.7–1.2 % only in the Rene 80H modification | 0 – 1.2 | 0 |
| Feimpurity limit | ≤ 0.35 | — |
| Siimpurity limit | ≤ 0.2 | — |
| Mnimpurity limit | ≤ 0.2 | — |
| Simpurity limit | ≤ 0.02 | — |
| Nibalance, approx. 60 % | balance | — |
Rene 80 80H — frequently asked
What is Rene 80 80H used for?
Rene 80 80H is typically used for industrial gas turbine blades, aircraft engine vanes, high-pressure turbine blades, equiaxed and DS, nozzle guide vane segments, blade tip shrouds and hot-section castings for turboshaft engines. In short: high creep-rupture cast alloy; 45 % γ′ blade grade; repair by braze only.
What is the yield strength of Rene 80 80H?
Rene 80 80H has a typical yield strength of 840 MPa (122 ksi) and a tensile strength of 1,010 MPa (146 ksi) — stronger than 89% of nickel alloy grades. Strength varies by condition: see the 5 listed tempers.
Is Rene 80 80H easy to machine?
Not especially — machinability is rated not recommended (10/100, worse than 93% of nickel alloy grades). Very difficult — creep-feed grinding, EDM and ECM dominate; if turning/milling, use rigid setups, ceramic or coated carbide at low speed with heavy flood coolant.
Can Rene 80 80H be welded?
Not readily — weldability is rated not recommended (12/100). Poor fusion weldability due to ~45 % γ′; repair only by pre-heat/hot-box GTAW with ductile Ni fillers, laser cladding or wide-gap TLP brazing, followed by full re-heat treatment.
What surface finishes work on Rene 80 80H?
Grit blast plus chemical/abrasive-flow deburring; service parts receive aluminide or Pt-aluminide diffusion coatings, MCrAlY overlays and thermal barrier ceramic topcoats — no anodizing.
Can Rene 80 80H be formed, bent or molded?
Not forgeable or formable — vacuum investment casting (equiaxed or DS) with controlled shell preheat and grain refinement; HIP recommended to close microporosity.
What is the maximum service temperature of Rene 80 80H?
Rene 80 80H is rated for continuous use to about 980°C (1,796 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between Rene 80-HT and Rene 80-AC?
HT is the default condition — standard supply condition for equiaxed investment-cast blades and vanes — optimum γ′ size distribution and creep-rupture life. AC: pick for non-critical hardware or as the intermediate state before solution/age; coarse as-cast γ′ gives lower ductility and rupture life. Yield strength is 855 MPa in HT versus 780 MPa in AC.
Sources
- AMS 5401 — Nickel Alloy, Corrosion and Heat Resistant, Investment Castings (Rene 80) — SAE International (2018)
- Superalloys II: High-Temperature Materials for Aerospace and Industrial Power — Wiley (1987)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- ASM Specialty Handbook: Heat-Resistant Materials — ASM International (1997)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.