Materials Mechanical & Electrical Properties
Material
|
CTE(PPM/0C)
|
TC(W/M0K)
|
ensity(GM/CC)
|
CuW/15-85
|
7.0
|
180
|
16.40
|
Alumina
|
6.9
|
25
|
3.61
|
AISiC
|
6.7
|
180
|
3.00
|
CuMo/15-85
|
6.6
|
184
|
10.00
|
Silvar-K™
|
7.0
|
110
|
8.80
|
CuW/10-90
|
6.5
|
209
|
17.00
|
GaAs IC
|
6.5
|
44
|
5.33
|
BeO
|
6.4
|
250
|
2.78
|
Kovar™
|
5.9
|
14
|
8.42
|
Molybdenum
|
5.1
|
5.1
|
10.25
|
Electrical Properties
Electrical
Molded Ceramic Walls: 2-6 GHZ
50 OHMS: 18 GHZ
Dielectric Properties
|
Material
|
Dielectric Properties
|
Loss Tangent %1 MHz. 200C
|
7052
|
5.1
|
.1500
|
7070
|
4.1
|
.0600
|
"K"
|
5.0
|
.1500
|
96% ALUM.
|
9.0
|
.0001
|
AIN
|
8.6
|
.0005
|
BEO
|
6.7
|
.0012
|
Impedance of Common Seals
|
Hole Diameter
|
Pin Diameter
|
Impedance
|
.040
|
.018
|
22.0 OHMS
|
.042
|
.018
|
22.0 OHMS
|
.056
|
.018
|
22.0 OHMS
|
50 OHM Seals
|
PIN Diameter
|
Hole Diameter
|
7052
|
7070
|
.010/.011
|
.067
|
.057
|
.012
|
.076
|
.065
|
.015
|
.095
|
.081
|
.018
|
.114
|
.097
|
.020
|
.127
|
.108
|
Current Capacity *
|
Lead Diameter
|
Amperes
|
.017
|
1.0
|
.20
|
1.5
|
.30
|
3.5
|
.40
|
5.5
|
.50
|
7.5
|
.60
|
11
|
Insulation Resistance
MIL-STD-883 D, Method 1003, Test Cond. E
Maximum Leakage 100 Nano Amperes
(10,000 Mega OHMs) at 500 Volts D.C.
Dielectric Withstanding Voltage
MIL-STD-202, Method 301
250 Volts A.C. for 60 Seconds
ASTM F-15 Alloy Properties
Chemical Composition %
|
Nickel
|
29
|
Nominal
|
Cobalt
|
17
|
Nominal
|
Manganese
|
0.05
|
Maximum
|
Silicon
|
0.20
|
Maximum
|
Carbon
|
0.06
|
Maximum
|
Iron
|
Balance
|
Maximum
|
Thermal Expansion Coefficient
|
30-4000C (86-7520F)
|
4.60 to 5.20 x 10-6cm/cm/0C
|
2.6 to 2.9 x 10-6in/in/0F
|
30-4500C (86-8420F)
|
5.10 to 5.50 x 10-6cm/cm/0C
|
2.8 to 3.1 x 10-6in/in/0F
|
Physical Properties
|
Density
|
8.35 gm/cc
|
0.302 lb/cu.in.
|
Melting Point
|
14500C
|
26420
|
Thermal Conductivity |
at 300C (860F)
|
0.0395 gm cal./sq.cm/sec/0C/cm
|
0.0318 BTU/sq.ft./0F/in.
|
at 3000C (6320F)
|
0.0485 gm cal./sq.cm/sec/0C/cm
|
/sec/0C/cm 0.0391 BTU/sq.ft./0F/in.
|
Electrical Resistivity |
at 200C (680F)
|
49 microhm/sq.cm/cm
|
294 ohm/cir.mil./ft.
|
Core Temperature
|
4350C
|
8150F
|
Mechanical Properties
|
Tensile Strength
|
52.7 kg/sq.mm
|
75,000 psi
|
Yield Strength 0.2% offset
|
28.1 kg/sq.mm
|
40,000 psi
|
Elongation % in 2 in. (5.08cm)
|
30
|
Reduction of Area (%)
|
70
|
Modulus of Elasticity
|
14.1 x 103kg/sq.mm
|
20 x 106 psi
|
Hardness (Rockwell 15T)
|
81
|
Poisson's Ratio
|
0.30
|
Linear Thermal Expansion of F-15 Alloy and Hard Glass vs. Temperature