Duratron™ DFU7040G is a premium, bearing-grade PI that exhibits superior temperature and wear resistance qualities as well as a low coefficient of friction. Not only do direct-formed Duratron™ DFU7040G PI parts and near net shapes maintain their performance abilities with or without lubrication, they are also enhanced with 40% graphite to exhibit even lower wear and friction compared to Duratron™ DFU7015G -- making this grade the best choice for bearing, bushing and seal applications involving higher loads or speeds. In comparison to Duratron™ DF7040G, it has improved thermal-oxidative stability and better dimensional stability.
PROPERTIES
40% graphite-filled for low friction and wear
Superior temperature resistance
High thermal-oxidative stability
Great dimensional stability
Thermal Properties
Property
Value
Heat Deflection Temperature at 1.8MPa (264 psi) (ºC)
290
Continuous allowable service temperature in air
260
Mechanical Properties
Property
Value
Tensile Strength (MPa)
35
Tensile Modulus of Elasticity (MPa)
4,450
Compressive stress at 1% nominal strain (MPa)
25
Compressive stress at 2% nominal strain (MPa)
50
Compressive stress at 5% nominal strain (MPa)
85
Flexural Strength (MPa)
70
Charpy Impact Notched (kJ/m²)
1.1
Chemical Properties
Property
Value
Hot Water / Steam
Limited
Acids, Weak
Acceptable
Acids, Strong (pH 1-3)
Acceptable
Alkalies, Weak
Acceptable
Alkalies, Strong (pH 11-14)
Acceptable
Hydrocarbons - Aromatic
Not acceptable
Hydrocarbons - Aliphatic
Not acceptable
Ketones, Esters
Not acceptable
Chlorinated Solvents
Not acceptable
Alcohols
Acceptable
Inorganic Salt Solutions
Acceptable
Electrical Properties
Property
Value
Dielectric Strength (kV/mm)
Certification Properties
Property
Value
FDA
Not compliant
European Food Approval
Not compliant
NSF
Not compliant
3A-SSI
Not compliant
Canada AG
USDA
Not compliant
Flammability (UL Rating)
V-0
Medical use
SEMICON - ESd materials
Miscellaneous Properties
Property
Value
Base Material
PI
Brand Family
Colors
Dark Grey
Density (g/cm3)
1.55
Water Absorption after 24 hrs immersion in water (%)
