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Expansion Precision Alloys 4J29 Ni29Co18 UNS K94610 Electric Vacuum Kovar Strip Tube

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Expansion Precision Alloys 4J29 Ni29Co18 UNS K94610 Electric Vacuum Kovar Strip Tube

Name: Expansion Precision Alloys 4J29 Ni29Co18 UNS K94610 Electric Vacuum Kovar Strip Tube
Brand: OHMALLOY/OEM
Price: 1 USD

Quality Expansion Precision Alloys 4J29 Ni29Co18 UNS K94610 Electric Vacuum Kovar Strip Tube for sale

Brand Name : OHMALLOY/OEM

Model Number : SP-OHMALLOY-4J29

Certification : Rohs/CE/SGS

Place of Origin : China

MOQ : 50KG

Payment Terms : L/C, T/T, , MoneyGram,Paypal

Supply Ability : 30 tons per month

Delivery Time : 5-8 working days after payment confirm

Packaging Details : Plywood case

Name : Expansion Precision Alloy 4J29 (Ni29Co18) UNS K94610 Electric Vacuum Kovar Strip Tube Bar Wire Plate

Material Shape : Bar/Strip/Plate/Tube(Customized)

Content : Ni29Co18

Application : Matching and sealing with the hard glass/Electric Vacuum

State : Soft/ 1/2 Hard/ Hard(Customized)

Feature : low coeffficient of expansion

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Expansion Precision Alloy 4J29 (Ni29Co18) UNS K94610 Electric Vacuum Kovar Strip Tube Bar Wire Plate

OhmAlloy-4J29 (Expansion alloy)
(Common Name: Kovar, Nilo K, KV-1, Dilver Po, Vacon 12)
OhmAlloy-4J29 also known as Kovar alloy. it was invented to meet the need for a reliable glass-to-metal seal, which is required in electronic devices such as light bulbs, vacuum tubes, cathode ray tubes, and in vacuum systems in chemistry and other scientific research. Most metals cannot seal to glass because their coefficient of thermal expansion is not the same as glass, so as the joint cools after fabrication the stresses due to the differential expansion rates of the glass and metal cause the joint to crack.

Mainly used in electric vacuum components and emission control, shock tube, igniting tube, glass magnetron, transistors, seal plug, relay, integrated circuits lead, chassis, brackets and other housing sealing.

Expansion Precision Alloys 4J29 Ni29Co18 UNS K94610 Electric Vacuum Kovar Strip Tube

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

Package

Expansion Precision Alloys 4J29 Ni29Co18 UNS K94610 Electric Vacuum Kovar Strip Tube

Product Tags:

nickel iron alloy

low expansion alloys

Expansion Precision Alloys 4J29 Ni29Co18 UNS K94610 Electric Vacuum Kovar Strip Tube Images

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