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Kovar (shown in Blue)

Kovar (shown in Blue). Properties of Copper. Thermal Expansion of Copper. Thermal expansion of Molybdenum. TE=4.535 x 10 -6 per deg C at 400 C. Glass used with Kovar. Code 7070. Comparison of Filler Materials. Sn – Ag Solder Shear Strength= 2,700 psi Tensile Strength= 5,800 psi

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Kovar (shown in Blue)

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  1. Kovar (shown in Blue)

  2. Properties of Copper

  3. Thermal Expansion of Copper

  4. Thermal expansion of Molybdenum TE=4.535 x 10-6 per deg C at 400 C

  5. Glass used with Kovar Code 7070

  6. Comparison of Filler Materials • Sn – Ag Solder • Shear Strength= 2,700 psi • Tensile Strength= 5,800 psi • Expansion 30 PPM/oC • Liquidus 430 oF • Georo Au - Ge Braze • Shear Strength= 26,825 psi • Tensile Strength= 26,835 psi • Young’s Modulus =10.55 x 106 psi • Expansion 13 PPM/oC • Liquidus 673 oF • Sn – Cu - Ag Solder • Shear Strength= 5,874 psi • Liquidus 423oF

  7. Wesco Metals

  8. Window

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