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Kovar Controlled Expansion Alloys Plate Sheet Strip ASTM F-15 Thickness 0.1-2.0mm

Place of Origin China
Brand Name AIWEN
Model Number ASTM F15
Minimum Order Quantity Negotiable
Price Negotiable
Packaging Details Wooden case
Delivery Time 45-50 days
Payment Terms 30% T/T in advance, balance before shipment
Supply Ability 5000kg per week

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Product Details
Thickness 0.1-2.0mm Equal Grades 4J29, Nilo-K,UNS K94610
Model ASTM F15 Brand AIWEN
Density 8.36g/cm3 Product Name Expansion Alloy Plate
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thermal expansion nickel


corrosion resistant alloys

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Product Description

Kovar expansion alloy plate, sheet, strip, wire, rod, bar (ASTM F-15) with huge stock



Kovar* (ASTM F-15)

Character of Kovar expansion alloy

Kovar alloy is magnetic at all temperatures below the Curie point. Magnetic properties will depend upon heat treatment; the lower the hardness, the higher the permeability values and lower hysteresis loss.

Density: 8.36g/cm3

Curie Temp: 435°C(815°F)

Introduction of Kovar expansion alloy

Kovar is a Ni-Fe alloy with 29% Nickel, 17% Cobalt and the remaining balance is Iron. The expansion characteristics of Kovar match both borosilicate (or Pyrex) glasses and alumina ceramics, making it one of the most popular of the controlled expansion alloys for hermetic sealing applications.

Chemical composition of Kovar alloy

C≤0.020, Ni≤29.0, Si≤0.20, Mn≤0.30, Co≤17.0, Fe=remainder


Huge stock of strip, bar and wire in stock. Fast delivery with 5 days for customized size. Delivery of other products please confirm with A-one Alloy.

Forms available at A-one Alloy

Plate, sheet, strip, wire, rod, bar, forging, tube, pipe, capillary, square pipe, and parts

Application of Kovar expansion alloy

Kovar is widely used in applications such as power tubes, microwave tubes, transistors, diodes, hybrid packages, and other kinds of scientific instruments.

Equal grades

4J29(China grade), ASTM F-15, NILO K, Pernifer 2918, Rodar, Dilvar P1, UNS K94610, 29-17 alloy



*Kovar is a registered trademark ofCarpenter Technology Corporation