Invar 42 Bar and Rod

Located in the heart of Manama, Bahrain, Junaid Metals has built a strong reputation for supplying high-quality specialty alloys. We are proud to be a trusted source for Invar 42 bar and rod, a unique material engineered for exceptional stability. This alloy is the go-to choice for professionals in demanding industries where even the slightest thermal expansion can compromise precision, ensuring your most critical projects are built on a foundation of unwavering reliability and performance.

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Invar 42 Round Bars

Invar 42 Rectangular Bars

Invar 42 Square Rods

What is Invar 42 Bar and Rods?

Invar 42 earns its reputation from a specific composition of 36% nickel and 64% iron, which gives it a remarkably low coefficient of thermal expansion. This means it barely changes size with temperature fluctuations. The alloy also offers good tensile strength and yield strength, making it not only stable but also mechanically robust enough for structural applications. It is this powerful combination of dimensional stability and inherent strength that makes it so valuable.

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Invar 42 Bar and Rod Specification

Standards :	ASTM F30, ASME SF30
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 Invar 42 Bar

Grade	C	Mn	Si	S	Fe	Ni	Cr	P	Mo	Cu	Mo
Invar 42	0.1 max	0.6 max	0.35 max	0.025 max	Balance	35.0 – 37.0	0.5 max	0.025 max	0.5 max	0.5 max	0.5 max

Invar 42 Bar and Rod Mechanical Properties

Yield Strength (0.2%Offset)	Tensile Strength	Elongation	Hardness
Ksi – 36 , MPa – 248	Ksi – 71 , MPa – 490	40 %	40

Equivalent Grades of Invar 42 Bar

STANDARD	WERKSTOFF NR.	UNS
Invar 42	1.3917	K94100

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Invar 42 Bar and Rod Types

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Frequently Asked Questions (FAQ)

Can laser welding be used for Invar 42 Bar?

Yes, laser welding can be used for Invar 42 bars. Its low thermal expansion properties make it suitable for precision welding, though attention is needed to manage heat input and distortion.

Can Invar 42 Bar and Rod Be Welded?

Yes, Invar 36 bar and rod can be welded, but it requires special care due to its low expansion properties. Proper welding techniques, such as TIG or MIG, are recommended.

Are there specific welding consumables for Invar 42 Bar and Rod ?

Yes, specific welding consumables for Invar 36 bar and rod include Invar 36 electrodes, TIG rods, and MIG wires. These materials ensure proper fusion and minimize thermal expansion issues during welding.

Invar 42 Bar and Rod Uses

The exceptional stability of Invar 42 bar and rod makes it indispensable in fields where precision is non-negotiable. You will find it shaping the frameworks for aerospace and satellite instruments, ensuring laser accuracy in surveying equipment, and forming crucial molds for composite aircraft components. It is also vital in telecommunications, used in waveguides, and in scientific research for constructing devices like precision pendulums. Essentially, wherever extreme temperatures threaten dimensional accuracy, Invar 42 provides the reliable solution.

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