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Physical/Mechanical Properties

Mechanical Properties
  Unit Kovar 52 Alloy 48 Alloy 46 Alloy 42 Alloy 42-6 Alloy 36 Alloy
Tensile Strength Psi x 1000 75 80 79 80 82 80 65
Yield Strength Psi x 1000 50 40 36 35 34 40 40
Elongation % in 2" 30 35 30 30 30 30 34

Physical Properties
Property Unit Kovar 52 Alloy 48 Alloy 46 Alloy 42 Alloy 42-6 Alloy 36 Alloy
Density Lbs/Cu In .302 .300 .298 .295 .293 .293 .291
Specific Gravity 8.36 8.30 8.25 8.17 8.12 8.12 8.05
Cuire Temp °F 815 986 880 860 716 560 535
Melting Point °F 2640 2600 2600 2600 2600 2600 2600
Electrical Resistivity Ohm- cir mil/ft 294 260 290 277 430 570 495
Thermal Conductivity BTU/in/sq.ft/hr/°F 120 97.0 90.0 79.2 74.5 87.0 72.6

Applicable Specifications
Alloy UNS ASTM MILITARY AMS
Kovar K94610, K94630 F-15, F-1466 Mil-I-23011C Class 1 7726B, 7727, 7728C
52 Alloy N14052 F-30 Mil-I-23011C Class 2 ———-
48 Alloy K94800 F-30 Mil-I-23011C Class 3 ———-
46 Alloy K94600 F-30 Mil-I-23011C Class4 ———-
42 Alloy K94100 F-30 Mil-I-23011C Class 5 ———-
42-6 Alloy K94760 F-31 Mil-I-23011C Class 6 ———-
Invar 36 K93601 A-658, B-753 Mil-I-23011C Class 7 ———-
K93602 F-1684 (96) MIL-S-16598B
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