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Krefine ® ESD PEEK EKH SS07 offers surface resistivity in the 10^6 to 10^8 ohm/square range. Krefine ESD PEEK is available in various grades for exact surface resistivity requirements, ranging from 10^6 to 10^12. The carbon filler is extremely homogeneous throughout the material. This means no conductive or insulative hot or cold spots. The milled carbon fiber filler is also much easier to machine than conventional carbon fillers. The carbon filler is extremely clean. You will not experience the sloughing which has typically been associated with carbon powder.
The complete Krefine ® PEEK product line includes the following grades:
EKH-SS07 Surface Resistivity in the 10^6 to 10^8 ohm/square range
EKH-SS09 Surface Resistivity in the 10^8 to 10^10 ohm/square range
EKH-SS11 Surface Resistivity in the 10^10 to 10^12 ohm/square range
EKH-SS12 Surface Resistivity in the 10^11 to 10^12 ohm/square range
Krefine ® is also available in PEI EIH-SS11 & PPS CDH-SS08 Grades
Key Properties
Ability to control respective resistivities within 10 to the first power in the range of 10^6 - 10^12 ohms/sq
Homogenous surface and volume resistivity
Low metal contamination
Low out-gassing
Chemical Resistance
Weak acid; acetic acid, benzoic acid, hydrochloric acid, sulfuric acid – Acceptable
Weak alkalies; dilute ammonia, potassium hydroxide, sodium hydroxide – Acceptable
Strong alkalies; strong ammonia, potassium hydroxide, sodium hydroxide – Acceptable
Hydrocarbons-aromatic; benzene, toluene, naphthalene – Acceptable
Hydrocarbons-aliphatic; heptane, gasoline, hexane, iso-octane, grease – Acceptable
Aldehydes and Ketones; acetone, methyl ethyl ketone, N-methyl-2-pyrrolidone – Acceptable
Esters; aliphatic esters, amyl acetate, dimethyl phthalate – Acceptable
Chlorinated solvent; methylene chloride, chloroform – Acceptable
Alcohols; methanol, ethanol, glycols, benzyl alcohol – Acceptable
Limitations
Chemical Reistance
Strong acid; conc. hydrochloric, nitric acid, sulfuric acid – Limited
Applications
Burn-In Socket
Chip Carriers
FOUP
HDD related parts
IC and HGA trays
IC Test Socket
Liquid crystal display cassettes
Liquid crystal display related parts
Slider Tray
Spin Chuck
Storage trays and bins
Wafer Carriers
Typical Properties of Krefine ® ESD PEEK EKH SS07 (10^6 - 10^8 Ohm/Square)
Description
Value
Material Type
Semi-Crystalline Thermoplastic
Chemical Name
PEEK Polyetheretherketone
Trade Name
Krefine®ESD PEEK EKH-SS07
Additives
Proprietary ESD Additives
Color
Black
Manufacturer
Kureha
PHYSICAL
Property
Test
Unit of Measure
Value
Density
ASTM D792
g/cm³
1.31
ASTM D792
lb/in³
0.047
Water Absorption, 24 hrs, Immersion
ASTM D570
% by wt.
0.2
Water Absorption, Saturation, Immersion
ASTM D570
% by wt.
0.3
MECHANICAL
Property
Test
Unit of Measure
Value
Tensile Strength
ASTM D638
psi
20300
Tensile Elongation at Break
ASTM D638
%
2.5
Flexural Strength
ASTM D790
psi
29010
Flexural Modulus
ASTM D790
psi
1450330
Compressive Strength
ASTM D695
psi
26110
Compressive Modulus
ASTM D695
psi
1305290
Hardness
ASTM D785
NA
Rockwell M125
IZOD Impact-Notched
ASTM D256
ft-lb/in
0.56
THERMAL
Property
Test
Unit of Measure
Value
Coefficient of Linear Thermal Expansion
ASTM D696
x 10-5 in./in./°F
1.5
Heat Deflection Temp
ASTM D648
°C at 264 psi
305
ASTM D648
°F at 264 psi
581
Melting Point Temp
ASTM D3418
°C
340
ASTM D3418
°F
644
Max Continuous Operating Temp
°C
260
°F
500
Minimum Operating Temp
°C
-60
°F
-76
Flammability Rating
UL94
NA
V-0
ELECTRICAL
Property
Test
Unit of Measure
Value
Dielectric Constant at 1 MHz
ASTM D150
NA
7.9
Surface Resistivity
ASTM D257
ohm/square
10^6 - 10^8
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