Nimonic 80A Plates | UNS N07080 Age-Hardenable Turbine & Power Alloy
Table of Contents:
When a combined-cycle power plant in Maharashtra lost an entire hot section after HP turbine blades and stator segments warped at 780°C, the root cause was clear: low-alloy steels with marginal creep strength could not survive 24/7 baseload and every outage cost over ₹6 crore in lost power and penalties. After the upgrade to Nimonic 80A Plates for blade platforms, shrouds, and high-temperature fasteners, creep-rupture life improved by more than 3× at 815°C, and the unit has now run for 60,000+ hours without a single temperature-related blade change.
Nimonic 80A (UNS N07080, W.Nr. 2.4952 / 2.4631) is a wrought, age-hardenable nickel-chromium alloy strengthened with titanium and aluminum, delivering high tensile and creep-rupture properties up to about 815°C along with excellent hot oxidation resistance. This makes it a natural fit for gas turbine blades, rings, discs, exhaust valves, nuclear boiler tube supports, and die-casting inserts where 316L, 310, or even Inconel 600 lose strength or scale badly under continuous high stress and temperature.
Aurico Alloys LLP offers affordable, authentic Nimonic 80A Plates as a trusted supplier, manufacturer, and stockist for chemical, oil & gas, marine, pharma, and power generation industries, plus hardware and industrial supply stores backed by BS HR 201, EN 10204 3.1 MTC, and PMI control for each heat. As a leading Nimonic 80A Plates supplier, stockist, exporter in India to abroad, the company supports Nimonic 80A plate suppliers in Mumbai for gas turbine blades and stator segments with both mill-fresh and custom-processed plate inventory.
High-quality Nimonic 80A Plates ready for industrial use.
Specification Overview
| Supplier & Manufacturer | Aurico Alloys LLP |
|---|---|
| Grade | Nimonic 80A (UNS N07080, W.Nr. 2.4952 / 2.4631) |
| Standards | BS HR 201, AECMA PrEn 2191, DIN 17742 |
| Typical Thickness Range | 4.75 mm – 150 mm |
| Temperature Capability | Continuous service up to ~815°C with load; higher for short peaks |
| Delivery Condition | Solution treated 1050–1100°C + age hardened 700–750°C, ground or mill finish |
| Documentation | EN 10204 3.1 MTC, heat treatment charts, hardness and mechanical test reports |
| Price | INR 2,360 – 7,000 per kg. Indicative USD 28 – 82 per kg; quoted against grade, form, size and quantity. |
Equivalent Grades & Standards
| Property | Value |
|---|---|
| UNS number | N07080 |
| Werkstoff / EN number | 2.4952 / 2.4631 |
| EN designation | NiCr20TiAl |
| Density | 8.19 g/cm3 |
| Melting range | 1320-1365 °C |
| Mass susceptibility (at 1000 gauss) | 5.85 × 10⁻⁶ |
| Volume susceptibility (at 1000 gauss) | 4.78 × 10⁻⁶ |
| Magnetic permeability (for 200-2000 oersted) | 1.000601 |
| Thermal conductivity (20 °C) | 11.2 W/m·°C |
| Electrical resistivity (20 °C) | 1.2 µΩ·m |
| Coefficient of expansion (20-100 °C) | 12.7 µm/m·°C |
| Plate, sheet and strip specification | BS HR 201 / AECMA PrEn 2191 / DIN EN 10302 |
Identifiers and physical constants for Nimonic 80A. A dash means no such designation is published for this grade.
Stock & Product Availability
As Nimonic 80A plate suppliers in Mumbai for gas turbine blades and stator segments, Aurico supports OEMs and service shops with BS HR 201 plates in solution + aged condition, ready for precision machining and EDM cutting. Power and nuclear OEMs increasingly specify age-hardenable Alloy 80A plates for nuclear boiler tube supports in India, where low cobalt content and stable creep properties are critical.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Carbon (C) | — | 0.10 |
| Chromium (Cr) | 18.0 | 21.0 |
| Silicon (Si) | — | 1.0 |
| Copper (Cu) | — | 0.2 |
| Iron (Fe) | — | 3.0 |
| Manganese (Mn) | — | 1.0 |
| Titanium (Ti) | 1.8 | 2.7 |
| Aluminium (Al) | 1.0 | 1.8 |
| Cobalt (Co) | — | 2.0 |
| Boron (B) | — | 0.008 |
| Zirconium (Zr) | — | 0.15 |
| Lead (Pb) | — | 0.0025 |
| Sulfur (S) | — | 0.015 |
| Nickel (Ni) | — | Balance |
Composition limits for Nimonic 80A. These are specification limits for the grade, not measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Mechanical & Physical Properties
| Property | Typical Value (Aged Plate) |
|---|---|
| Tensile Strength at RT | ≈ 1130–1450 MPa (≈ 164–210 ksi) |
| 0.2% Yield Strength at RT | ≈ 600–900 MPa |
| Elongation (4d) | ≥ 20 % |
| Max recommended service temperature | ≈ 815°C under load |
| Creep-rupture strength at 815°C | High; widely used for blades and tube supports |
| Coefficient of thermal expansion (20–100°C) | ≈ 12.7 µm/m°C |
Applications & Benefits
Why this grade
Nimonic 80A is the same 80/20 nickel-chromium base made age-hardenable with titanium and aluminium, which precipitate gamma prime. It carries far more strength at temperature than 75 and has long been the choice for automotive and diesel exhaust valves and for turbine bolting to around 815°C. The trade-off is fabrication: it needs solution treatment before welding and a post-weld age, or it strain-age cracks.
- Power & Turbines: BS HR 201 Nimonic 80A plates for high-stress exhaust valves and spindle bolts; proven in gas turbine blades, rings and discs where sustained 700–815°C service rules out stainless steels.
- Oil, Gas & Marine: Corrosion resistant Nimonic 80A plates for offshore platform gas turbine hot-sections, UNS N07080 nickel alloy plates for oilfield downhole tools in high-temperature wells, and marine-grade engine valve components.
- Chemical & Pharma: Nimonic 80A plates for chemical reactors handling high-temperature oxidizing media and high-purity Alloy 80A plates for pharmaceutical sterilization equipment fabrication where oxidizing steam cycles can exceed 650°C.
- Furnaces & Tooling: Custom cut-to-size Nimonic 80A plates for industrial furnace hearth furniture and die-casting inserts, providing better thermal fatigue resistance than tool steels or Inconel 600 in repeated heat cycles.
- Sourcing & Standards: Verified Nimonic 80A plate exporters in India with Mill Test Certificates (MTC) 3.1, including CR plates for precision aerospace-grade seals and fasteners in cryogenic-to-815°C applications.
FAQ & Search Trends
Global Export Destinations
We ship worldwide from Mumbai. See every destination we export to on our export markets page.
Domestic Supply Network
We deliver across India from our Mumbai stockyard. See every city we supply on our supply locations page.
Conclusion
Nimonic 80A Plates from Aurico Alloys LLP combine UNS N07080 / BS HR 201 pedigree with proven creep-rupture strength and oxidation resistance up to 815°C, giving gas turbines, power plants, petrochemical equipment, and high-heat process hardware a safer, longer-life alternative to conventional stainless or solid-solution nickel alloys that repeatedly fail under combined temperature and stress so are your most critical high-temperature blades, fasteners, and supports protected by Nimonic 80A yet?