TECAST® T Blue is a thermally stable blue cast nylon 6 (PA 6 C), published by Ensinger as its own grade with properties similar to TECAST® T Natural. It is the most extensible of the unfilled colours, at 50% elongation at break against 30% for natural, and it carries the highest tensile modulus of the three at 450,000 psi. Tensile strength is 10,500 psi, flexural strength is 12,000 psi on a 350,000 psi flexural modulus, Izod impact is 1.35 ft-lb/in and compressive strength is 12,000 psi at 10% strain on a 300,000 psi compression modulus.
It is machined into gears, sheaves, sprockets, bearings, bushings, rollers and wear components for conveyor, agricultural, construction and materials-handling machinery, and the casting route gives it very low internal stress, so large sections machine predictably. Long-term service is 200°F with 300°F intermittent, heat deflection temperature is 200°F at 264 psi, the melting point is 428°F, the dynamic coefficient of friction is 0.26 at 40 psi and 50 fpm and flammability is UL 94 HB. Note that the service temperatures match the natural and black grades rather than bettering them. Moisture is the limitation as with all cast nylon, at 1.2% uptake in 24 hours.
Thermally stable blue cast nylon 6 with its own published datasheet
Most extensible unfilled TECAST® T at 50% elongation at break
Highest tensile modulus of the unfilled colours, 450,000 psi