Polysulfone (PSU) is a high-temperature aromatic sulfone polymer.  PSU has excellent thermal and chemical resistance, making it well suited for demanding applications in automotive, aerospace, electronics, defense, food service, industrial, plumbing, medical, semi-con applications.    

ThermaX™ PSU is an excellent alternative to ULTEM™ 9085:

• Superior thermal properties (higher Tg and HDT) allow for higher strength and stiffness at elevated temperatures
• Lower cost per kg and lower density (more filament per kg)

Attributes of Firewire® Polysulfone (PSU) include:

• Very high thermal properties with a Tg of 187°C and HDT of 172°C  [Superior to ULTEM™ 9085]
• Excellent hydrolytic resistance
• High Environmental Stress Crack Resistance (ESCR)
• Highly resistant to gamma radiation
• Sterilization suitable - including EtO gas, radiation, steam autoclaving, plasma, dry heat and cold sterilization
• Resists most common automotive fluids, including gasoline, antifreeze, transmission fluid, motor oil, power steering fluid, windshield washer fluid
• Excellent dimensional stability (low creep sensitivity and low, uniform coefficient of thermal expansion) and highly reproducible part-to-part dimensions

Filament Specifications:

• Diameter:  1.75mm (+/- 0.05mm)
• Density:  1.24g/cm3