add permittivity, compressive strength and annotation for mechanical properties and seven new materials

src/data/SiO2-MgO-Al2O3-K20-B2O3-F.json

@@ -0,0 +1,17 @@
+{
+  "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"]
+    }
+  }
+}