Kovar Bar and Rod

Aiman Metals is a reputable manufacturer and supplier of high-precision Kovar bars and rods, located in Kuala Lumpur, Malaysia. With a strong focus on specialty alloys, Aiman Metals crafts Kovar products designed for controlled expansion and outstanding thermal stability. These bars and rods find their place in various industries, including electronics, aerospace, and telecommunications, especially for applications involving glass-to-metal and ceramic-to-metal seals. Thanks to rigorous quality control, advanced processing techniques, and strict adherence to international standards, Aiman Metals guarantees reliable product performance. The company has earned recognition throughout Malaysia and Southeast Asia as a dependable source for high-performance Kovar alloy solutions.

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Kovar Round Bars

Kovar Rectangular Bars

Kovar Square Rods

What is Kovar Bar and Rod?

Kovar is a nickel-iron-cobalt alloy that consists of about 29% nickel, 17% cobalt, and the rest iron, along with trace elements that boost its performance. It’s specifically designed to have a thermal expansion rate that closely matches borosilicate glass, making it perfect for sealing applications. Kovar boasts a tensile strength of around 450–550 MPa and maintains excellent dimensional stability across a broad temperature range. It also offers good machinability, thermal conductivity, and magnetic properties. Notably, Kovar retains its mechanical integrity even after thermal cycling, making it ideal for environments that demand both strength and thermal compatibility.

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Kovar Bar and Rod Specification

Standards :	UNS K94610 \| Werkstoff Nr 1.3981 \| DIN 17745 \| ASTM F15 \| AMS 7726 \| AFNOR NF A54-301 \| S.E.W 385
Size Range :	0.015″ Thk up to 2″ Thk
Thickness :	Range from .008″ to .0125″
Length :	2m, 2.44m, 3m, or as required
Width :	10-2500mm

Chemical Compositions of Kovar Bar

Weight %	Ni	Fe	Co	C	Mn	Si	Al	Cr	Mg	Zr	Ti	Cu	Mo
Alloy K Kovar	29.0	53.0	17.0	0.04 max	0.50 max	0.20	0.10 max	0.20 max	0.10 max	0.10 max	0.10 max	0.20 max	0.20 max

Kovar Bar Mechanical Properties

Material	Condition	Yield Strength (0.1% Offset)		Tensile Strength		Elongation %
Material	Condition	psi	MPa	psi	MPa	Elongation %
Alloy K Kovar	Annealed	49,000	340	75,000	520	42

Kovar Bar Equivalent Grades

ASTM	UNS	Workstoff	AMS	DIN	AFNOR	S.E.W
F15	K94610	1.3981	7726	17745	NF A54-301	385

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Why Aiman Metals?

Packaging

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Kovar Bar and Rod Types

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Kovar Bar and Rod Uses

Kovar bars and rods are extensively utilized in situations where thermal expansion compatibility with glass or ceramic materials is essential. You’ll find them in hermetic seals for electronic packages, semiconductor housings, transistor and diode enclosures, and vacuum tube components. In the aerospace and defense industries, Kovar is employed in optical devices and sensor housings. It also plays a crucial role in telecommunications, particularly in microwave tubes and laser housing components. The alloy’s ability to maintain its integrity during thermal fluctuations makes it a go-to choice for many applications.

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