UNS K94610 Kovar Alloy Bar With Good Low Temperature Tissue Stability

UNS K94610 Kovar Alloy Bar With Good Low-Temperature Tissue Stability

Kova alloy bar is also called sealing alloy or constant expansion alloy. Alloys with relatively constant low or moderate expansion coefficients over the temperature range -70 to 500 ° C. It is close to the expansion coefficient of glass or ceramic and other sealing materials, so as to achieve the effect of matching the seal. The main types are Fe-Ni, Fe-Ni-Co, Fe-Ni-Cr alloys. There are also non-oxygen copper, tungsten, molybdenum and their alloys and composites. It is mainly used as sealing material in electronic industry and electric vacuum industry.

Chemical Composition of Kovar Alloy Bar

Product specifications of Kovar Alloy Bar

• Density: 0.302 lbs./in3
• Specific Gravity: 8.36 g/cc
• Curie Temperature: 435o C / 815o F
• Melting Point: 1450o C / 2640o F
• Specific Heat: 0.105 cal/gm/ o C at 0o C & 0.155 cal/gm/ o C at 430o C
• Thermal Conductivity: 17.3 W/m ⋅ K
• Electrical Resistivity: 49 microhm/cm

Application of Kovar Alloy Bar

It is suitable for transmitting tube, oscillating tube, pilot tube, transistor, sealed plug, relay shell and other electric vacuum devices. It has a certain linear expansion coefficient in the temperature range of 20 ℃ - 450 ℃, and can match with hard glass to sea firmly.

Kovar Alloy Bar Picture: