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0.3mm Min. OD Bright Surface Kovar Alloy Tube for Glass-Sealing Applications

Name: 0.3mm Min. OD Bright Surface Kovar Alloy Tube for Glass-Sealing Applications
Brand: Shanghai Tankii Alloy Material Co.,Ltd
SKU: Kovar
Price: 499.05 USD
Availability: InStock

Product Details

Place of Origin: Shanghai, China

Brand Name: TANKII

Certification: ISO9001

Model Number: Kovar

Payment & Shipping Terms

Minimum Order Quantity: 5KG

Price: negotiable

Packaging Details: Carton + Wooned Case

Delivery Time: 7-20 days

Payment Terms: L/C, T/T, Western Union

Supply Ability: 10 Tons per month

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Specifications

Description

Specifications

Highlight: 
                                                                                                                                                                                                                                                                                                                                                                                                      FeNi Kovar alloy seamless tube, Nickel alloy 4j29 pipe, Iron Nickel alloy precision tube
                                                  

Material:	Nickel Iron Cobalt Alloy Tube	OD:	0.3mm Min.
WT:	0.01mm Min.	Length:	0.3mm Min.
Surface:	Bright - Surface	Sample:	Accpted Small Order

Material:	Nickel Iron Cobalt Alloy Tube
OD:	0.3mm Min.
WT:	0.01mm Min.
Length:	0.3mm Min.
Surface:	Bright - Surface
Sample:	Accpted Small Order

Description

0.3mm Min. OD Bright Surface Kovar Alloy Tube for Glass-Sealing Applications

Kovar is a nominal 29%Ni-17%Co-54%Fe alloy that is a well-known glass-sealing alloy suitable for sealing to hard glasses. Kovar has a nominal expansion coefficient of approximately 5 ppm/°C and inflection temperature of ~450 °C (840 °F).

Kovar (ASTM F15) has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials. This alloy has found wide application in power tubes, microwave tubes, transistors, and diodes. In integrated circuits, it has been used for the flat pack and the dual-in-line package.

Chemical Composition in % Kovar

Ni 28,5-29,5%	Fe 51,14-54,5%	C 0.03%	Si 0.3%	Mn 0,4 %	S o 0.015%
P 0.015%	Co 17-18%	Ti 0.1%	Al 0.2%	Cu 0.2%	Cr 0,1 %

Kovar Physical properties

Density (g/cm3)	Resistivity at 20℃(Ωmm2/m)	Temperature Coefficient of Resistance (20℃~100℃)X10-5/℃	Curie point (Tc/ ℃)	Elastic Modulus (E/ Gpa)
8.2	0.48	3.7~3.9	430	138

Kovar Tensile strength, MPa

Status number	State	Wire	Strip
R	Soft	≤585	≤570
1/4I	1/4 Hard	585~725	520~630
1/2I	1/2 Hard	655~795	590~700
3/4I	3/4 Hard	725~860	600~770
I	Hard	≥850	≥700

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0.1mm Low Carbon Constantan Alloy with 420 Mpa Tensile Strength and High Elongation Capacity for Precision Resistance Applications

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