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.    

Firewire® is 3DXTECH's brand of high-temperature polymers designed specifically for 3D printing the highest performance parts possible.  

Attributes of Firewire® Polysulfone (PSU) include:

• Very high thermal properties with a Tg of 185°C and HDT of 175°C
• Excellent hydrolytic resistance
• High Environmental Stress Crack Resistance (ESCR)
• Highly resistant to gamma radiation
• Sterilization capable - 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
• Inherent flame resistance (V-O)
• Excellent dimensional stability (low creep sensitivity and low, uniform coefficient of thermal expansion) and highly reproducible part-to-part dimensions
• Exceptional strength and modulus, even at elevated temperatures