Why these numbers
Elegoo PLA Matte starts from Bambu's PLA Basic reference; Elegoo's published specs are overlaid where available, and everything else stays at Bambu's calibrated default.
Tensile X-Y 30 MPa (lower than std PLA); Vicat 63 °C
Treat these as a starting point — run a flow-test cube and Bambu's Flow Dynamics calibration after import for the last few percent.