UHMW-1900 (Ultra High Molecular Weight Polyethylene) 07/10/13

Properties A.S.T.M UHMW-1900
Specific Gravity D792 .940 .942
Specific Volume, cu.in. per lb. D792 29.8
Refractive Index, nD D542 -
Tensile Strength (at yield) p.s.i D638,D651 2,500
Elongation % D638 5.25
Modulus of Elasticity in Tension , 105 p.s.i D747 1.02
Compressive Strengt, p.s.i D695 -
Flexural Strength, p.s.i D790 -
Impact Strength, ft-lb

per in. of notch(1/2x1/2 in. notched bar, Izod test)

D256 NO BREAK
Hardness , Rockwell D785 R38
Thermal Conductivity (see footnote !) C177 -
Specific Heat, cal per Cel. per gm. ----
Thermal Expansion, 103 per o Cel. D696 7.2
Resistance to heat, F (continous) ---- -
Heat Distortion Temp oF D648 163
Volume Resistivity (see footnote 2) D257 10
Dielectric Strength (see footnote 3) D149 710
Dielectric Constant, 60 cycles D150 -
Dielectric Constant 103 cycles D150 -
Dielectric Constant 106 cycles D150 2.30
Dissipation (power) factor, 60 cycles D150 -
Dissipation (power) factor, 103 cycles D150 -
Dissipation (power) factor, 106 cycles D150 0.0002
Arc Resistance, sec. D495 -
Water absorbtion , 24Hr, 1/8"thick , % D570 0.01
Burning Rate D635 Very Slow
Effect of Sunlight - -
Effect of Weak Acids D543 Very Resistant
Effect of Strong Acids D543 -
Effect of Weak Alkalies D543 -
Effect of Strong Alkalies D543 -
Effect of Orgain Solvents D543 -l
Clarity - Translucent to Opaque
Footnotes
1. 104 cal. per sec. per sq. cm., per 1 degree C per cm.
2. ohm-cm (50% relative humidity and 23o C
3. short-time, 1/8-in. thickness, volts per mil.
4. step-by-step , 1/8-in. thickness, volts per mil.
MILITARY SPECIFICATIONS
MIL-P-22748A