During a critical shutdown at a major Middle Eastern gas turbine power plant, engineers discovered extensive hot corrosion damage in combustion chamber components after just 18 months of service on sulfur-rich fuels. Standard alloys failed catastrophically under alkali metal sulfate and chloride deposits at 900°C, threatening millions in lost generation capacity. The solution? Nimonic 81 Sheets – the high-chromium superalloy engineered specifically for such extreme hot corrosion environments, delivering breakthrough performance where Nimonic 80A and other alternatives simply eroded away.
Table of Contents
Nimonic 81 sheets provide unmatched Nimonic 81 oxidation resistance and creep resistance for procurement heads, engineers, fabricators, and OEM manufacturers in chemical, oil & gas, marine, pharma, and power generation sectors. With 30% higher chromium content than Nimonic 80A, these sheet metal for jet engine components excel in gas turbine combustion chambers and furnace components, reducing maintenance cycles by up to 40% compared to conventional nickel alloys.
Aurico Alloys LLP serves as your trusted Nimonic 81 Sheets supplier, stockist, and exporter in India to abroad. We support chemical, oil & gas, marine, pharma, power generation industries, and hardware/industrial supply stores with affordable, best quality, authentic supply – featuring Nimonic 81 ready stock, sheet cut to size, and competitive Nimonic 81 sheet price per kg worldwide.
Supplied to Special Metals’ proprietary specification, Nimonic 81 maintains high temperature tensile strength above 874 MPa after age hardening procedure, enabling lightweight yet robust designs for Nimonic 81 high-temperature fasteners and chemical processing equipment. Welding Nimonic 81 achieves 90% joint efficiency using matching filler, perfect for complex fabrications.
High-quality Nimonic 81 Sheets ready for industrial use.
Specification Overview
| Supplier & Stockist | Aurico Alloys LLP – Nimonic 81 sheets supplier India |
|---|---|
| Grade | Nimonic 81 |
| Standards | Special Metals proprietary specification for cold-rolled sheet and strip; no ASTM or AMS specification is published for this grade |
| Thickness Range | 0.1mm – 100mm (Nimonic 81 sheet cut to size) |
| Width | 10mm – 2500mm |
| Finish | Hot-rolled, cold-rolled, solution annealed, age hardened |
| Delivery | Nimonic 81 ready stock, export packing, MTC included |
| Price | INR 3,000 – 5,500 per kg. Indicative USD 35 – 65 per kg; quoted against grade, form, size and quantity. |
Equivalent Grades & Standards
| Property | Value |
|---|---|
| UNS number | — |
| Density | 8.06 g/cm3 |
| Melting range | 1305-1375 °C |
| Specific heat (20 °C) | 461 J/kg·°C |
| Thermal conductivity (20 °C) | 10.9 W/m·°C |
| Electrical resistivity (20 °C) | 1.27 µΩ·m |
| Coefficient of expansion (20-100 °C - extruded and stretched bar) | 11.1 µm/m·°C |
| Coefficient of expansion (20-100 °C - cold rolled sheet) | 11.7 µm/m·°C |
| Dynamic modulus of elasticity (20 °C - extruded bar) | 196 GPa |
| Dynamic modulus of elasticity (20 °C - sheet) | 212 GPa |
| Modulus of rigidity (20 °C - dynamic torsional) | 80 GPa |
| Plate, sheet and strip specification | Mill specification |
Identifiers and physical constants for Nimonic 81. A dash means no such designation is published for this grade.
Stock & Product Availability
Aurico Alloys LLP offers comprehensive Nimonic 81 price per kg competitive rates with extensive ready stock for urgent gas turbine combustion chambers and chemical processing equipment requirements. Global exporters benefit from Nimonic 81 exporter services with full certification and cut-to-size precision.
Nimonic 81 Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Carbon (C) | 0.05 nominal | |
| Silicon (Si) | 0.50 nominal | |
| Copper (Cu) | 0.20 nominal | |
| Iron (Fe) | 1.0 nominal | |
| Manganese (Mn) | 0.50 nominal | |
| Chromium (Cr) | 30.0 nominal | |
| Titanium (Ti) | 1.8 nominal | |
| Aluminium (Al) | 0.9 nominal | |
| Cobalt (Co) | 2.0 nominal | |
| Molybdenum (Mo) | 0.30 nominal | |
| Boron (B) | 0.003 nominal | |
| Zirconium (Zr) | 0.06 nominal | |
| Sulfur (S) | 0.015 nominal | |
| Nickel (Ni) | — | Balance |
Nominal composition for Nimonic 81. These are nominal figures rather than acceptance limits, and they are not measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Nimonic 81 Mechanical Properties
| Property | Value |
|---|---|
| Ultimate Tensile Strength | 874-897 MPa |
| 0.2% Yield Strength | 565-420 MPa |
| Elongation | 14-38% |
| Hardness | 230 HV |
| Max Service Temperature | 950-1160°C (hot worked) |
Applications & Why Choose Nimonic 81
- Chemical Processing: Nimonic 81 for chemical processing equipment – resists sulfate/chloride deposits
- Oil & Gas: Heat exchangers on impure fuels – superior to Nimonic 80A
- Marine: Exhaust valves, turbine components – exceptional Nimonic 81 oxidation resistance
- Pharma: High-purity furnace components – maintains cleanability
- Power Generation: Gas turbine combustion chambers, sheet metal for jet engine components
- Hardware/OEM: Nimonic 81 high-temperature fasteners, die components from stock
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 81 sheets from Aurico Alloys LLP deliver certified mill-test performance with unmatched hot corrosion resistance and high-temperature reliability for your most demanding applications. Are your combustion chambers and furnace components protected with industry-leading Nimonic 81 sheets?