RS-4250

Resin Systems
62 Rte 101-A
Amherst, NH 03031

RIGID MICROWAVE ABSORBING MATERIAL –  RS-4250

RS-4250 is a rigid epoxy based magnetic castable microwave absorbing material capable of continuous operation up to 350of. This material is ideal for fabrication of low power loads, attenuators, ring chokes and other RF absorbing elements at microwave frequencies. RS-4250 can be supplied in custom cast configurations, standard stock shapes of plates, rods and bars, or in pourable kits.

APPROXIMATE PROPERTIES

DENSITY .093 LB/IN3
DIELECTRIC CONSTANT @ 10 GHZ 10.7
LOSS TANGENT @ 10 GHZ .05
PERMEABILITY @ 10 GHZ 1.1
ATTENUATION @ 10 GHZ 40 dB/IN.
VOLUME RESISTIVITY >1.0 X 10`11 @ 77oF
DIELECTRIC STRENGTH >25 V/MIL.
FLEXURAL STRENGTH 15,000 PSI
TENSILE STRENGTH 7,500 PSI
IZOD IMPACT STRENGTH .35 FT. LB/IN
THERMAL EXPANSION 26 X10-6 IN/IN/oF
THERMAL CONDUCTIVITY 3.2 (BTU)(IN)/(HR)(FT2)(oF)
SPECIFIC HEAT .29 BTU/ (LB)(F)
WATER ABSORPTION (20 DAYS @ 77oF) .05%
NASA OUTGASSING RP 1124 – TOTAL MASS LOSS 0.34%
NASA OUTGASSING –
COLLECTED VOLATILE CONDENSABLE MATERIALS
0.01 %
MAXIMUM USE TEMPERATURE 350 oF
FUNGUS (NON-NUTRIENT PER MIL STD 810) YES
JUNE 1995

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