Kovar Bar and Rod

Houston, USA-based George Metals is a trusted Kovar Bars and Rods manufacturer and supplier of precision-engineered iron-nickel-cobalt alloy products for applications where controlled thermal expansion is needed. Engineered according to ASTM F15 standards, George Metals supplies Kovar products with good consistency, high machinability, and reliable performance in thermal stress. Bars and rods of Kovar are commonly applied across electronics, aerospace, and medical technology industries. With bespoke sizing, timely delivery, and specialized technical assistance, George Metals facilitates the delivery of high-performance materials optimized for hermetic sealing and other demanding thermal-matching applications.

Kovar Rods Price in California, Kovar Round Bars USA, Kovar Rectangular Bars Supplier in Texas, Kovar Rectangular Rods Exporter in USA, Kovar Round Bars Stockist in Houston, Kovar Hex Bars Supplier in USA, Kovar Cold Drawn Round Bars Distributor in Texas, Kovar Rods Stockist California

Kovar Round Bars

Kovar Rectangular Bars

Kovar Square Rods

What is Kovar Bar and Rod?

Kovar Bars and Rods consist of about 29% nickel, 17% cobalt, and the remainder iron with minute amounts of such elements as manganese, silicon, and carbon. This alloy finds fame due to its closely controlled coefficient of thermal expansion (5.1 to 5.9 µm/m·°C between 20°C and 200°C), which is quite comparable to that of borosilicate glass and alumina ceramics. Kovar provides tensile strength of 520–540 MPa, yield strength of approximately 340–380 MPa, and elongation of 30–42% in the annealed condition. Its density is around 8.3 g/cm³, and its melting point is around 1449°C, with very good dimensional stability under thermal cycling.

Kovar Bars Price List in Texas, Kovar Round Bars Exporter Stockist in Houston, Stockist of Kovar Round Bars in Houston, Kovar Bars Weight Chart, Kovar Rods Dealer in West Houston, Kovar Round Bars Manufacturer in West Houston, Kovar Square Bars Supplier in Texas, Kovar Flat Bars Price List in Houston, Kovar Rectangular Bars Supplier in California

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

You Need Our Support, to Have Any Projects?

Test Certificate

Why George Metals?

Packaging

Modern Equipments

Expert Engineers

Well Maintained

Efficient Factories

Kovar Bar and Rod Types

Kovar Round Bars Size Chart, Kovar Polished Rods Dealer in West Houston, Kovar Bars Supplier in USA, Kovar Hollow Rods Price List in Houston, Kovar Rectangular Bars Supplier in Houston, Kovar Hexagonal Bars Exporter in West Houston, Kovar T-Bars Exporter in USA, Kovar Flat Rods Exporter in Texas, Kovar Flat Bars USA, Kovar Hollow Round Bar Manufacturer in California

Kovar Bar and Rod Uses

Kovar Bars and Rods find extensive application wherever glass-to-metal or ceramic-to-metal sealing is needed, especially in those applications where thermal expansion compatibility is essential. They are widely used in electronic devices like vacuum tubes, transistors, microwave tubes, and hybrid microcircuits. In medicine, Kovar is applied to precision equipment and diagnostic instruments that have to retain sealing integrity across varying temperatures. Aerospace and defense industries utilize it for sensor enclosures and instrumentation in high vacuum or space conditions. Kovar is utilized in optical components, laser parts, and scientific instruments needing high stability and thermal shock resistance.

Our Products

Other Material

If You Are Looking To Buy High Quality

We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.