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BK PREMIUM 901 (blue) (PA6)
This modified cast nylon 6 grades with its distinctive blue color exhibits higher toughness, flexibility and fatigue resistance than BOBKAY 6 PA It has proved to be an excellent material for gear wheels, racks and pinions.
 
BK PREMIUM 901
Physical Properties Metric English Comments
Specific Gravity 1.15 g/cc 0.0415 lb/in³ ASTM D792
Water Absorption 0.6 % 0.6 % Immersion, 24hr;
ASTM D570(2)
Water Absorption at Saturation 7 % 7 % Immersion; ASTM
D570(2)
Mechanical Properties      
Hardness, Rockwell M 85 85 ASTM D785
Hardness, Rockwell R 115 115 ASTM D785
Hardness, Shore D 85 85 ASTM D2240
Tensile Strength, Ultimate 82.7 MPa 12000 psi ASTM D638
Elongation at Break 20 % 20 % ASTM D638
Tensile Modulus 2.76 GPa 400 ksi ASTM D638
Flexural Modulus 3.45 GPa 500 ksi ASTM D790
Flexural Yield Strength 110 MPa 16000 psi ASTM D790
Compressive Strength 103 MPa 15000 psi 10% Def.; ASTM
D695
Compressive Modulus 2.76 GPa 400 ksi ASTM D695
Shear Strength 75.8 MPa 11000 psi ASTM D732
Coefficient of Friction 0.2 0.2 Dry vs. Steel;
QTM55007
K (wear) Factor 201 x 10-8 mm³/N-M 100 x 10-10 in³-min/ft-lb-hr QTM 55010
Limiting Pressure Velocity 0.105 MPa-m/sec 3000 psi-ft/min 4:1 safety factor;
QTM 55007
Izod Impact, Notched 0.214 J/cm 0.4 ft-lb/in ASTM D256 Type A
Electrical Properties      
Surface Resistivity per Square Min 1e+013 ohm Min 1e+013 ohm EOS/ESD S11.11
Dielectric Strength 19.7 kV/mm 500 V/mil Short Term; ASTM
D149
Thermal Properties      
CTE, linear 68°F 90 μm/m-°C 50 μin/in-°F (-40°F to 300°F);
ASTM E831
Thermal Conductivity 0.245 W/m-K 1.7 BTU-in/hr-ft²-°F ASTM F433
Melting Point 216 °C 420 °F Crystalline, Peak;
ASTM D3418
Maximum Service Temperature, Air 127 °C 260 °F Long Term
Deflection Temperature at 1.8 MPa (264 psi) 93.3 °C 200 °F ASTM D648
Flammability, UL94 (Estimated Rating) HB HB 1/8 inch
Qualitative Processing Properties      
Compliance - FDA Not Compliant    
Machinability 1 1-10, 1=Easier to Machine  
Service in Alcohols Limited    
Service in Aliphatic Hydrocarbons Acceptable    
Service in Aromatic Hydrocarbons Acceptable    
Service in Chlorinated Solvents Limited    
Service in Ethers Acceptable    
Service in Ketones Acceptable    
Service in Strong Acids Unacceptable    
Service in Strong Alkalies Unacceptable    
Service in Sunlight Limited    
Service in Weak Acids Limited    
Service in Weak Alkalies Limited    
 
 
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