Superior High-Temperature Strength
Retains stable mechanical integrity at service temperatures up to 815°C (1500°F) and above.
Introduction
Nimonic Alloy Introduction
Nimonic grades generally contain over 50% nickel and around 20% chromium, with titanium and aluminium added as key alloying elements. They are predominantly engineered for gas turbine hardware and high-performance reciprocating internal combustion engines.
Boasting excellent elevated-temperature endurance, Nimonic is the preferred material for critical jet-engine parts including turbine blades and exhaust nozzles exposed to extreme thermal and mechanical loads.
Boasting excellent elevated-temperature endurance, Nimonic is the preferred material for critical jet-engine parts including turbine blades and exhaust nozzles exposed to extreme thermal and mechanical loads.
PRODUCTS
Nimonic Alloy Product Categories
We stock a wide range of Nimonic grades in multiple forms to meet your specific needs. Each product meets stringent quality standards.
Characteristics
Key Characteristicsof Nimonic Alloys
Nimonic superalloys are designed to withstand extreme mechanical and thermal loads. Below are the critical performance characteristics.
FAQ
Nimonic Alloy FAQs
What is nimonic alloy?
Nimonic is a family of nickel-based superalloys designed for high-temperature and high-stress environments. It typically contains nickel (major element), chromium, and small additions of titanium, aluminum, and sometimes cobalt, which together provide excellent heat resistance and creep strength.
What temperature can nimonic withstand?
Depending on the grade:
Around 700°C – 950°C continuous service temperature
Some advanced grades can perform near 1000°C in short-term conditions
Around 700°C – 950°C continuous service temperature
Some advanced grades can perform near 1000°C in short-term conditions
Can nimonic alloy be welded?
Yes, but it requires controlled processes such as:
TIG welding
MIG welding
Proper heat treatment is often needed before and after welding to maintain properties.
TIG welding
MIG welding
Proper heat treatment is often needed before and after welding to maintain properties.
Is Nimonic stronger than stainless steel?
Yes. Compared to stainless steel, Nimonic offers:
Much higher high-temperature strength
Better creep resistance
Superior performance under long-term thermal stress
However, stainless steel is cheaper and easier to machine.
Much higher high-temperature strength
Better creep resistance
Superior performance under long-term thermal stress
However, stainless steel is cheaper and easier to machine.
Why is nimonic alloy heat resistant?
Its heat resistance comes from a strengthening phase (γ′ Ni₃(Al,Ti)), which stabilizes the microstructure at high temperatures. This prevents deformation (creep) and maintains mechanical strength even above 800°C in many grades.
What is the difference between Nimonic 80A and Nimonic 90?
80A: Better fabricability, widely used in valves and moderate high-temp parts
90: Higher strength and better creep resistance for more demanding aerospace applications
90: Higher strength and better creep resistance for more demanding aerospace applications
What industries use Nimonic alloys?
Aerospace (jet engines, turbines)
Power generation (gas turbines, boilers)
Automotive racing (exhaust valves)
Chemical & marine engineering
Nuclear engineering
Power generation (gas turbines, boilers)
Automotive racing (exhaust valves)
Chemical & marine engineering
Nuclear engineering
What is the composition of nimonic alloy?
While compositions vary by grade, most Nimonic alloys contain:
Nickel (Ni): Base element (>50%)
Chromium (Cr): ~18–21% for oxidation resistance
Titanium (Ti): ~1–3% for strengthening
Aluminum (Al): ~1–2% for precipitation hardening
Cobalt (Co): optional, improves creep resistance and stability
Nickel (Ni): Base element (>50%)
Chromium (Cr): ~18–21% for oxidation resistance
Titanium (Ti): ~1–3% for strengthening
Aluminum (Al): ~1–2% for precipitation hardening
Cobalt (Co): optional, improves creep resistance and stability
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