Invar 42 Bar and Rod

Sahil Metals, based in Riyadh, Saudi Arabia, stands out as a reliable manufacturer and supplier of high-performance metal products tailored for specialized industrial needs. Among its key offerings is **Invar 42 Bar and Rod**, a nickel-iron alloy celebrated for its low thermal expansion and remarkable dimensional stability. Designed with precision in mind, this alloy is perfect for applications in electronics, aerospace, telecommunications, and sealing. Sahil Metals ensures that Invar 42 is supplied in line with international standards, catering to the rigorous demands of industries throughout Saudi Arabia and the GCC.

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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 Bar and Rod** consists of roughly 42% nickel and 58% iron. This specific composition grants the alloy its distinctive ability to control thermal expansion, closely aligning with the expansion rates of certain glasses and ceramics. With a low thermal expansion coefficient up to about 300°C, Invar 42 also boasts impressive mechanical properties, including a tensile strength ranging from 450 to 650 MPa and excellent machinability. Its stability under thermal stress makes it an excellent choice for applications that require tight dimensional tolerances.

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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

**Invar 42 Bar and Rod** finds extensive use in glass-to-metal seals, electronic components, lead frames, vacuum tube devices, and precision instrumentation. Its matched expansion characteristics make it ideal for hermetic seals and electronic packaging, where maintaining a reliable seal between materials with different thermal behaviors is crucial. Furthermore, it’s utilized in aerospace systems and magnetic shielding applications, thanks to its dependable performance across varying temperature conditions and stable physical properties over time.

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