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Shanghai Tankii Alloy Material Co.,Ltd
Shanghai Tankii Alloy Material Co.,Ltd
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Kovar Nickel Iron Cobalt Alloy For High Reliability Glass To Metal Seals

Product Details

Place of Origin: China

Brand Name: Tankii

Certification: ISO Rohs

Model Number: Kovar 4J29

Payment & Shipping Terms

Minimum Order Quantity: 100Kg

Packaging Details: Standard export wooden box packing.

Delivery Time: 15-25days

Payment Terms: T/T, L/C, D/P, Western Union, MoneyGram

Supply Ability: 50000 per month

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Specifications
Highlight:

Kovar Glass To Metal Seals

,

High Reliability Glass To Metal Seals

,

Nickel Iron Cobalt Alloy

Application:
Industrial
Color:
Silver
Hardness:
HRC45-55
Heat Treatment:
Annealing
MOQ:
1 Ton
Material:
Precision Alloy
Packaging:
Wooden Case
Processing Technology:
Forging
Shape:
Wire Strip Sheet Rod Bar Tube
Size:
Customized
Surface Treatment:
Polishing
Tolerance:
High Precision
Application:
Industrial
Color:
Silver
Hardness:
HRC45-55
Heat Treatment:
Annealing
MOQ:
1 Ton
Material:
Precision Alloy
Packaging:
Wooden Case
Processing Technology:
Forging
Shape:
Wire Strip Sheet Rod Bar Tube
Size:
Customized
Surface Treatment:
Polishing
Tolerance:
High Precision
Description
Kovar Nickel Iron Cobalt Alloy For High Reliability Glass To Metal Seals

Kovar / Nilo K (ASTM F15)

Kovar Nickel Iron Cobalt Alloy For High Reliability Glass To Metal Seals 0Kovar Nickel Iron Cobalt Alloy For High Reliability Glass To Metal Seals 1Kovar Nickel Iron Cobalt Alloy For High Reliability Glass To Metal Seals 2Kovar Nickel Iron Cobalt Alloy For High Reliability Glass To Metal Seals 3
Technical Data Sheet

Kovar (Alloy K) is a nickel-iron-cobalt controlled-expansion alloy containing 29% nickel. Its coefficient of expansion, which decreases with rising temperature to the inflection point, matches the expansion rate of borosilicate glasses and alumina ceramics. Kovar (Alloy K) is used for glass-to-metal seals in applications requiring high reliability or resistance to thermal shock. Kovar (Alloy K) is used for high-power transmitting valves, transistor leads and headers, integrated-circuit lead frames, and photography flash bulbs.

Kovar Chemical Composition (Basic Density 8.36)
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

 

Typical Mechanical Properties

Material Condition Yield Strength (0.1% Offset) Tensile Strength Elongation %
psi MPa psi MPa
Alloy K
Kovar
Annealed 49,000 340 75,000 520 42

 

Availability
Alloy K / Kovar is available (further details) in Bar, Rod, Tube, Sheet, Strip, Coil, Plate and Wire. For all stock availability contact Sales for further availability.

  Specifications
UNS K94610
Werkstoff Nr 1.3981
DIN 17745
ASTM F 15
AMS 7726 Wire
AMS 7727 Bars and Forgings
AMS 7728 Sheet, Strip and Plate
MIL-I-23011 class 1
AFNOR NF A54-301
S.E.W 385
DILVER P
Registered Names
Kovar ®
Nicoseal ®
Nicosel ®
Rodar ®
Telcoseal ®
Sealvar ®
Alloy 29-17 ®
Nilo K ®
Dilver ®
Pernifer 29-18 ®
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