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Controlled Expansion Kovar Alloy 1.3981 4j29 Precision Alloy

Brand Name:	DLX
Model Number:	4j29(kovar)
MOQ:	50
Price:	$20-$45
Payment Terms:	L/C, T/T, Western Union, MoneyGram
Supply Ability:	300 tons per month

Detail Information

Product Description

Detail Information

Place of Origin:

China

Certificate:

ISO9001

Shape:

Bar

Ni (Min):

28.5

Size:

Customized

Color:

Nickel,silver

Ultimate Strength (≥ MPa)::

570

Elongation (≥ %):

30 %

Application::

Glass To Metal Sealing

Brand Name::

DLX

Packaging Details:

Wooden Case&PP tube

Supply Ability:

300 tons per month

Highlight:

Kovar Precision Alloy

1.3981 Nickel Iron

4j29 Precision Alloy

Product Description

Controlled Expansion Kovar Alloy 1.3981 4j29 Precision Alloy 0

Controlled Expansion Kovar Alloy 1.3981 4j29 Precision Alloy 1

Precision alloy iron nickel cobalt W.Nr 1.3981 kovar alloy 4J29 bar

Precision Alloy Kovar alloy is a vacuum melted, iron-nickel-cobalt alloy that is widely used in the electronics industry. Precision Alloy Kovar is a nickel-iron-cobalt, controlled-expansion alloy which contains 29% nickel. Precision Alloy its coefficient of expansion, which decreases with rising temperature to the inflection point, matches the expansion rate of borosilicate glasses and alumina ceramics.

Precision Alloy Kovar alloy has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials. This Precision alloy has found wide application in power tubes, microwave tubes, transistors, and diodes. In integrated circuits, Precision Alloy has been used for the flat pack and the dual-in-line package.

Basic performance: Precision Alloy is divided into low-expansion alloy and fixed-expansion alloy, the latter is also known as sealing alloy. Precision Alloy Expansion alloy besides has the specific thermal expansion coefficient, according to the different USES also requires a good sealing property, weldability and corrosion resistance, machinability and cutting, and in the use of expansion characteristics caused by the temperature range there is no obvious change of phase transformation, Precision Alloy product is commonly bar, sheet, strip, wire and tube and so on.
Precision Alloy Expansion alloy applications: Precision Alloy is widely used in glass, metal and ceramic sealing in avionics and instruments, electric vacuum industry and other electronic devices, electric light source and other fields.

Chemical Composition

Grade	C%	P%	S%	Mn%	Si%	Cu%	Cr%	Mo%	Ni%	Co%	Fe%
Kovar	Max 0.03	Max 0.020	Max 0.020	Max 0.50	Max 0.30	Max 0.20	Max 0.20	Max 0.20	28.5-29.5	16.8-17.8	Bal.

Specifications

Grade	UNS	Werkstoff Nr.
Kovar	K94610	1.3981

Physical Properties

Grade	Density	Melting Point
Kovar	8.17 g/cm3	1449°C

Mechanical Properties

Grade	Tensile Strength N/mm²
Grade	Soft	1/4 Hard	1/2 Hard	3/4 Hard	Full Hard
Kovar Strip	<570	520-630	590-700	600-770	>700
Kovar Wire	<585	585-725	655-795	725-860	>860

Coefficient of Expansion

Alloy	Linear Coefficient of Thermal Expansion a,10-6/°C
Alloy	20-200°C	20-300°C	20-400°C	20-450°C	20-500°C	20-600°C	20-700°C	20-800°C
Kovar	5.9	5.3	5.1	5.3	6.2	7.8	9.2	10.2

Controlled Expansion Kovar Alloy 1.3981 4j29 Precision Alloy 2

Tags:

Inconel Alloy

Monel Alloy

Hastelloy Alloy

Pure Nickel Metal

NiCr Alloy

FeCrAl Alloy

CuNi Alloy

Nickel Welding Wire

Incoloy Alloy

Thermocouple Bare Wire

Thermocouple Extension Wire

Mineral Insulated Cable

Thermal Spray Wire

Precision Alloy

High Temperature Nickel Alloy

Metal Alloy

Platinum Iridium Alloy

Cobalt Chromium Alloy

Nitinol Alloy

Metal Foam

Inconel Alloy

Monel Alloy

Hastelloy Alloy

Pure Nickel Metal

NiCr Alloy

FeCrAl Alloy

CuNi Alloy

Nickel Welding Wire

Incoloy Alloy

Thermocouple Bare Wire

Thermocouple Extension Wire

Mineral Insulated Cable

Thermal Spray Wire

Precision Alloy

High Temperature Nickel Alloy

Metal Alloy

Platinum Iridium Alloy

Cobalt Chromium Alloy

Nitinol Alloy

Metal Foam

products details

Controlled Expansion Kovar Alloy 1.3981 4j29 Precision Alloy

Controlled Expansion Kovar Alloy 1.3981 4j29 Precision Alloy

Kovar Precision Alloy

1.3981 Nickel Iron

4j29 Precision Alloy