It's becoming easier to use more sustainable materials and the DuPont line of Zytel RS® renewably sourced nylon resins is contributing effectively to this trend. In addition to several resins designed for extrusion, which contain 100% renewably sourced content, the 610 resin is suitable for injection molding and uses 60% renewably sourced content. It is available in low, medium and high viscosity grades. Some specs on the LC3030 NC010 low viscosity 610 resin are:
Yield Stress MPa (kpsi) 62 (9)
Tensile Modulus MPa (kpsi) 2250 (326)
Flexural Modulus MPa (kpsi) 2100 (305)
Notched Charpy Impact Strength kJ/m2 4.5
A stiffer formulation is available in the form of Zytel® RS HTN. It "provides an exceptional balance of properties including impact resistance, stiffness, low warpage. Consider Zytel(r) RS HTN for electronic applications requiring radio wave transparency, such as hand held devices, mobile phones, GPS, digital assistants, radios and cameras."
The next step is: spec it where you can.