{
  "Name": "Macor",
  "Formula": "SiO2-MgO-Al2O3-K2O-B2O3-F",
  "Mechanical Properties": {
    "T": ["20-25", "°C"],
    "rho": [2520, "kg/m³"],
    "E": [66.9, "GPa"],
    "nu": 0.29,
    "R_m'": [350, "MPa"]
  },
  "Thermodynamic Properties": {
    "Crystal": {
      "alpha": [9.3, "µm/m/K"],
      "lambda": [1.46, "W/m/K"]
    }
  }
}