Kovar® Bar 57.2 mm

Steelun Steel Standards of Kovar® Bar 57.2 mm:

Alternative and trade names
Pernifer 2918®, Dilvar P1®, NILO K®

ASTM F15/F1466

Equivalent standards of Kovar® Bar 57.2 mm:

AMS l-23011 CL1,MIL l-23011 CL1,UNS K94610

Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Steelun Description of Kovar® Bar 57.2 mm:

Kovar is a controlled expansion alloy. It is a nickel iron alloy with 29% nickel, 17% cobalt and the remaining balance is iron.

Chemical composition Steelun of Kovar® Bar 57.2 mm:

Element Weight %  
Fe balance
Ni 29.0  
Co 17.0  
Cr 0.2  
Si 0.2  
C 0.02  

Steelun Properties of Kovar® Bar 57.2 mm:

Dimension
Width [ w ] 57.20 mm
Electrical
Electrical resistivity [ ρel ] 4E-7 Ω·m
General information
Density [ ρ ] 8.36 g/cm³
Magnetic
Curie temperature [ Tc ] 435.00 °C
Mechanical
Elastic modulus [ E ] 207.00 GPa
Elongation [ A ] 30.00 % at 20 °C in 2 in.
Hardness, Rockwell B [ HRB ] 80.00 [-]
Tensile strength [ Rm ] 518.00 MPa
Yield strength [ YS ] 276.00 MPa
Thermal
Coefficient of thermal expansion [ α ] 5.8E-6 1/K at 100 °C
 
Melting point [ Tm ] 1449 °C
Specific heat capacity [ cp ] 460.00 J/(kg·K)
Thermal conductivity [ λ ] 17.00 W/(m·K)

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.

Technological properties Steelun of Kovar® Bar 57.2 mm:

Application areas
Common applications of Kovar: Glass-to-metal hermetic sealing with hard borosilicate glass, ceramic-to-metal sealing, power tubes, microwave tubes, transistors, diodes, integrated circuits

Steelun Applications of Kovar® Bar 57.2 mm:

Resistors,Electronic Tubes,Optoelectronics,Seals,Electronics,Mechanical Systems,Microelectronics,Transistors,Semiconductor Devices,Diodes

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