Ponn Machine Cutting Company


Conductive Materials Chart

Filler C Ni/Gr Ni/Gr AG/Glass AG/Glass AG/Ni AG/Ni AG/Al AG/Al
Elastomer Silicone Silicone Fluorosilicone Silicone Fluorosilicone Silicone Fluorosilicone Silicone Fluorosilicone
MIL-83528 TYPE M L B D
Operating
Temp. (ºC )
Min -55 -55 -55 -55 -55 -55 -55 -55 -55
Max +200 +150 +150 +160 +160 +125 +160 +160 +160
Hardness Shore A 70 30-70 65 65 65 75 70 65 70
Specific Gravity g/cc 1.2 1.95 1.95 1.9 1.9 4.0 4.4 2.0 2.0
Compression Deflection % min 3.5 3.5 3.0 3.5 3.5 3.5 3.5 3.5 3.5
Tensile
Strength
#/in sq 650 150 150 200 200 200 180 200 180
Elongation Min- 100 100 100 100 100 100 60 100 60
Max 300 300 300 260 300 260
Compression
Set
% 40 35 25 30 30 32 30 32 30
Tear Strength #/in 40 40 35 30 30 30 35 30 35
Volume Res. Ohm-cm 7.0 .10 0.1 .006 .006 .005 .012 .008 .012
Shielding Effectiveness
as tested per
Mil-DTL-83528
100 MHz 80 100 100 100 100 120 120 120 120
500 MHz 80 100 100 100 90 120 120 120 120
2 GHz 60 100 100 90 90 120 115 115 115
10 GHz 50 100 100 90 90 110 110 115 115


Filler Silver
Copper
Silver
Copper
Silver
Copper
Silver Low
Density
Silver Pure Silver Pure Silver Pure Silver
Copper
Nickel
Graphite
Elastomer Silicone Fluorosilicone Silicone Silicone Silicone Fluorosilicone Silicone Silicone EPDM
MIL-83528 TYPE A C K J E F H G N/A
Operating Temp. (ºC ) Min -55 -55 -45 -55 -55 -65 -55 -45 -30
Max +125 +125 +125 +160 +160 +160 +160 +125 +100
Hardness Shore A 65 75 85 45 65 75 80 80 75
Specific Gravity g/cc 3.5 4.1 3.8 1.8 3.5 4.0 4.0 4.75 2.1
Compression Deflection % min 3.5 3.5 2.5 8.0 2.5 3.5 2.5 2.5 2.0
Tensile Strength #/in sq 200 180 400 150 300 250 400 600 200
Elongation Min- 100 100 100 50 200 100 90 20 75
Max 300 300 300 250 500 300 290 N/A
Compression Set % 32 35 35 35 45 60 60 N/A 40
Tear Strength #/in 25 35 40 20 50 40 60 70 70
Volume Res. Ohm-cm .004 .010 .005 .010 .002 .002 .005 .007 5
Shielding Effectiveness
as tested per
Mil-DTL-83528
100 MHz 120 120 120 100 120 120 120 120 90
500 MHz 120 120 120 100 120 120 120 120 90
2 GHz 120 120 120 90 120 120 120 120 80
10 GHz 120 115 120 90 120 120 120 120 80


PERFORMANCE CHARACTERISTICS: COMMERCIAL GRADE MATERIAL TYPES

Filler Pure Nickel Silver Glass Silver Nickel Silver Aluminum Silver Copper Silver Low Density Silver Pure
Operating Temp. (C) MIN -55 -55 -55 -55 -55 -55 -65
Operating Temp. (C) MAX +125 +170 +180 +200 +125 +160 +180
Specific Gravity 3.05 1.8 4.0 2.0 3.5 1.7 4.0
Hardness Available (Shore A) 45-75 45-75 45-75 45-75 45-75 45-75 45-75
Tensile Strength (# / in. sq) 400 200 200 200 200 150 200
Elongation * (%) 300 280 300 280 300

100

300
Tear Strength* (#/in) 40 35 35 35 35 25 60
Volume Res.* (ohm-cm) 2.0 .05 .06 .08 .06 .1 .04
Shielding Effectiveness
(20 MHz – 1 GHZ) min
60 75 80 75 85 70 85


  20A Cross Street, Woburn MA  01801   USA Tel: (781) 937-3373 Fax: (781) 937-0372 E-mail: sales@ponnmachine.com