Sultron™ PSU is a translucent polysulfone material that offers a combination of excellent mechanical, thermal and electrical properties. This grade often replaces polycarbonate whenever higher temperature resistance, improved chemical resistance, or autoclavability is required. Sultron™ PSU shapes are ideal for analytical instrumentation and semiconductor process equipment components due to their outstanding radiation stability and resistance to acidic and salt solutions, detergents, hot water and steam.
PROPERTIES
Broad temperature range capability
Good thermal and electrical insulation characteristics
Hydrolysis resistant
Radiation stability
Excellent mechanical properties
Thermal Properties
Property
Value
Heat Deflection Temperature at 1.8MPa (264 psi) (ºC)
170
Continuous allowable service temperature in air
150
Mechanical Properties
Property
Value
Tensile Strength (MPa)
88
Tensile Modulus of Elasticity (MPa)
2,850
Compressive stress at 1% nominal strain (MPa)
25
Compressive stress at 2% nominal strain (MPa)
49
Compressive stress at 5% nominal strain (MPa)
101
Flexural Strength (MPa)
120
Charpy Impact Notched (kJ/m²)
3.5
Chemical Properties
Property
Value
Hot Water / Steam
Limited
Acids, Weak
Acceptable
Acids, Strong (pH 1-3)
Not acceptable
Alkalies, Weak
Acceptable
Alkalies, Strong (pH 11-14)
Not acceptable
Hydrocarbons - Aromatic
Not acceptable
Hydrocarbons - Aliphatic
Limited
Ketones, Esters
Not acceptable
Chlorinated Solvents
Not acceptable
Alcohols
Acceptable
Inorganic Salt Solutions
Acceptable
Electrical Properties
Property
Value
Dielectric Strength (kV/mm)
30
Certification Properties
Property
Value
FDA
Compliant
European Food Approval
Not compliant
NSF
Compliant
3A-SSI
Compliant
Canada AG
USDA
Compliant
Flammability (UL Rating)
HB
Medical use
FOOD - FDA FOOD - 3A-SSI FOOD - USDA
Miscellaneous Properties
Property
Value
Base Material
PSU
Brand Family
Colors
Yellow-Translucent
Density (g/cm3)
1.24
Water Absorption after 24 hrs immersion in water (%)
