https://www.avient.com/sites/default/files/2020-10/2020-gravi-tech-design-guide-.pdf
KEY CHARACTERISTICS
The primary features and benefits
of Gravi-Tech formulations are:
• Customized density, offering a wide range of
specific gravities from 1.5 to 11 gm/cm3
• Broad modulus range, from very flexible to
very rigid grades
• Corrosion resistance, withstanding oxidation
for long-term use and benefit
• Chemical resistance, withstanding fuels, oils
and other harsh chemicals
Additional features include:
• Design flexibility and processing ease
• Good impact strength
• Elevated heat deflection temperature
6 Gravi-Tech Design Guide 7
CHAPTER 2 | PROCESS SETTINGS
Density Modified Formulations
Gravi-Tech™ polymer-metal composites are high-density materials developed as thermoplastic-based
alternatives to lead and other traditional metals.
Figure 10 shows the proper design
for structural holes.1
Figure 7 - Boss Design Guidelines
2.5* ID
DIA.
The gate freeze time is 6
seconds, therefore the ideal hold time is
7–8 seconds
Cooling and Recovery Time
Two variables will dictate the cooling time of
a part: screw recovery time and material cooling
time.