Nimonic Bars and Rods

Nimonic Bars and Rods are top-notch nickel-based alloy products designed for outstanding strength, durability, and heat resistance, especially in tough environments. These alloys are celebrated for their remarkable resistance to oxidation, creep, and thermal fatigue, ensuring they perform reliably even when exposed to high temperatures for long periods. You’ll find them commonly used in industries like aerospace, power generation, petrochemicals, and other high-temperature industrial applications. Thanks to their excellent mechanical stability, corrosion resistance, and long lifespan, Nimonic Bars and Rods are the go-to choice for components that need to hold up under intense thermal and mechanical stress.

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Nimonic Round Bars

Nimonic Rectangular Bars

Nimonic Square Rods

What is Nimonic Bars and Rods?

The makeup of Nimonic alloys mainly includes nickel, with chromium, cobalt, titanium, and aluminum playing key roles in strengthening the material. This unique composition gives them impressive tensile strength, creep resistance, and oxidation stability at elevated temperatures. They boast high yield strength, good fatigue resistance, and exceptional thermal stability, ensuring their mechanical behavior remains dependable even during extreme thermal cycling. This makes them perfect for high-stress, high-temperature environments that demand long-lasting performance.

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Nimonic Bars and Rods Specification

Standards :	BS HR 5, BS HR 504, DIN 17752, AECMA PrEN2306, AECMA PrEN2307, AECMA PrEN2306, AECMA Pr EN2307, AECMA PrEN2402, ISO 9723, ISO 9724, ISO 9725, MSRR 7004
Dimensions :	EN, DIN, JIS, ASTM, BS, ASME, AISI
Wire :	Thickness starting from 0.05mm
Round bar size :	Diameter: 3-~800mm
Hex Bar size :	2-100mm A/F
Flat bar size :	Thickness: 2 -100mm / Width: 10 to 500mm
Square bar size :	4 to 100mm
Rectangular Bars Size :	33 x 30mm to 295 x 1066mm
Hollow Bar :	32mm OD x 16mm ID to 250mm OD x 200mm ID
Tolerance :	H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements
Finish :	Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish

Chemical Compositions of Nimonic Bars

Grade	C	Mn	Si	Cu	Fe	Ni	Cr	Ti
Nimonic 75	0.08-0.15	1.0 max	1.0 max	0.5 max	5.0 max	Bal	18.0-21.0	0.2-0.6

Nimonic Bars Mechanical Properties

Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
8.37g/cm3	1340 – 1380	Psi – 104,000	Psi – 40,000	42 %

Equivalent Grades of Nimonic Bar

STANDARD	WERKSTOFF NR.	UNS
Nimonic 75	2.4951 / 2.4630	N06075

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Nimonic Bars and Rods Types

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Frequently Asked Questions (FAQ)

Are Nimonic Rod Susceptible To Galvanic Corrosion?

Nimonic rods can be susceptible to galvanic corrosion when in contact with more electropositive metals, especially in the presence of an electrolyte. Proper insulation or coating can help mitigate this risk.

What Sizes and Finishes Are Available for Nimonic Bar ?

Nimonic bars are available in various sizes, ranging from small diameters (6mm) to larger ones (up to 200mm). Common finishes include hot rolled, cold drawn, and polished.

Can Nimonic Bar Be Welded?

Yes, Nimonic alloys, including Nimonic 75 and 80A, can be welded. However, proper welding procedures and pre- and post-weld heat treatment are essential to avoid cracking and ensure strength.

Nimonic Bar and Rod Uses

You’ll often find Nimonic Bars and Rods in gas turbine components, jet engine parts, combustion chambers, fasteners, and turbine blades that operate under intense heat. They’re also utilized in power plants, nuclear applications, furnace hardware, petrochemical equipment, and high-performance automotive systems. Their ability to endure prolonged thermal exposure and mechanical stress makes them ideal for critical components in the aerospace and energy sectors. Plus, they’re a popular choice for high-temperature springs, valves, and structural parts in industries that require exceptional reliability and stability.

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