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

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

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
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
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

sa213 t22 alloy tube

,

copper tube expander

,

7 16x20g alloy tube
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Expansion Precision Alloys 4J29 Ni29Co18 UNS K94610 Electric Vacuum Kovar Strip Tube

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Product Detail
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
Contact Supplier
Expansion Precision Alloys 4J29 Ni29Co18 UNS K94610 Electric Vacuum Kovar Strip Tube
Expansion Precision Alloys 4J29 Ni29Co18 UNS K94610 Electric Vacuum Kovar Strip Tube
Expansion Precision Alloys 4J29 Ni29Co18 UNS K94610 Electric Vacuum Kovar Strip Tube

Ohmalloy Material Co.,Ltd

Verified Supplier
10 Years
shanghai, shanghai
Since 2008
Business Type :
Manufacturer, Distributor/Wholesaler, Exporter, Trading Company
Main Products :
FeCrAl Alloy, Nickel Strip, Bimetallic Strip
Total Annual :
4000000-6000000
Employee Number :
20~50
Certification Level :
Verified Supplier
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