diff --git a/src/data/FeC0.02Cr17Ni12Mo2.json b/src/data/FeC0.02Cr17Ni12Mo2.json
new file mode 100755
index 0000000..b7d0dd7
--- /dev/null
+++ b/src/data/FeC0.02Cr17Ni12Mo2.json
@@ -0,0 +1,23 @@
+{
+  "Name": "FeC0.02Cr17Ni12Mo2",
+  "Name_de": "V4A",
+  "Formula": "FeC0.02Cr17Ni12Mo2",
+  "Standard": {
+    "ISO": "X2CrNiMo17-12-2",
+    "WERKSTOFFNUMMER": "1.4404",
+    "SAE": "316L",
+    "Type": "Austenitic stainless steel grades"
+  },
+  "Electromagnetic Data": {
+    "mu_r": [">=1.005"]
+  },
+  "Mechanical Properties": {
+    "T": ["20-25", "°C"],
+    "rho": [7950, "kg/m³"],
+    "Hardness": {
+      "HB": ["<=215", "MPa"]
+    },
+    "Vacuum": "yes",
+    "Annotation": "A4; suitable welding consumables: electrode / welding wire 1.4429, 1.4430. For chloride containing media (salt water). Historical predecessor 1.4571 X6CrNiMoTi17-12-2. See also 1.4429."
+  }
+}
diff --git a/src/data/FeC0.02Cr18Ni10.json b/src/data/FeC0.02Cr18Ni10.json
new file mode 100755
index 0000000..893eb4e
--- /dev/null
+++ b/src/data/FeC0.02Cr18Ni10.json
@@ -0,0 +1,10 @@
+{
+  "Name": "FeC0.02Cr18Ni10",
+  "Formula": "FeC0.02Cr18Ni10",
+  "Standard": {
+    "ISO": "X2CrNi18-10",
+    "WERKSTOFFNUMMER": "1.4311",
+    "SAE": "304LN",
+    "Type": "Austenitic stainless steel grades"
+  }
+}
diff --git a/src/data/FeC0.02Cr18Ni9.json b/src/data/FeC0.02Cr18Ni9.json
new file mode 100755
index 0000000..8093e0e
--- /dev/null
+++ b/src/data/FeC0.02Cr18Ni9.json
@@ -0,0 +1,19 @@
+{
+  "Name": "FeC0.02Cr18Ni9",
+  "Formula": "FeC0.02Cr18Ni9",
+  "Standard": {
+    "ISO": "X2CrNi18-9",
+    "WERKSTOFFNUMMER": "1.4307",
+    "Type": "Austenitic stainless steel grades"
+  },
+  "Mechanical Properties": {
+    "T": ["20-25", "°C"],
+    "Annotation": "Second most common type of alloy of a stainless steel (20%)."
+  },
+  "Source": [
+    {
+      "Type": "Web",
+      "URL": "https://de.wikipedia.org/wiki/Rostfreier_Stahl#Werkstoffnummer_1.4301_%E2%80%93_X5CrNi18-10"
+    }
+  ]
+}
diff --git a/src/data/FeC0.02Cr19Ni11.json b/src/data/FeC0.02Cr19Ni11.json
new file mode 100755
index 0000000..f18873f
--- /dev/null
+++ b/src/data/FeC0.02Cr19Ni11.json
@@ -0,0 +1,10 @@
+{
+  "Name": "FeC0.02Cr19Ni11",
+  "Formula": "FeC0.02Cr19Ni11",
+  "Standard": {
+    "ISO": "X2CrNi19-11",
+    "WERKSTOFFNUMMER": "1.4306",
+    "SAE": "304L",
+    "Type": "Austenitic stainless steel grades"
+  }
+}
diff --git a/src/data/FeC0.08Cr18Ni9.json b/src/data/FeC0.08Cr18Ni9.json
new file mode 100755
index 0000000..a43b67d
--- /dev/null
+++ b/src/data/FeC0.08Cr18Ni9.json
@@ -0,0 +1,20 @@
+{
+  "Name": "FeC0.08Cr18Ni9",
+  "Formula": "FeC0.08Cr18Ni9",
+  "Standard": {
+    "ISO": "X8CrNi18-9",
+    "WERKSTOFFNUMMER": "1.4305",
+    "Type": "Austenitic stainless steel grades"
+  },
+  "Mechanical Properties": {
+    "T": ["20-25", "°C"],
+    "rho": [7852, "kg/m³"],
+    "Annotation": "Addition of sulfur, very good machinability, corrosion resistance slightly reduced. Forgeability severely limited. Tendency to crack. Only partially polishable. Average mechanical properties."
+  },
+  "Source": [
+    {
+      "Type": "Web",
+      "URL": "http://www.dosiersysteme.ch/documents/Datenblatt_Edelstahl.pdf"
+    }
+  ]
+}
diff --git a/src/data/FeC0.1Cr18Ni8.json b/src/data/FeC0.1Cr18Ni8.json
new file mode 100755
index 0000000..406a4fa
--- /dev/null
+++ b/src/data/FeC0.1Cr18Ni8.json
@@ -0,0 +1,27 @@
+{
+  "Name": "FeC0.1Cr18Ni8",
+  "Formula": "FeC0.1Cr18Ni8",
+  "Standard": {
+    "ISO": "X10CrNi18-8",
+    "WERKSTOFFNUMMER": "1.4310",
+    "Type": "Austenitic stainless steel grades"
+  },
+  "Mechanical Properties": {
+    "T": ["20-25", "°C"],
+    "rho": [7900, "kg/m³"],
+    "Yield strength": {
+      "R_p": ["222.5±27.5", "MPa"]
+    },
+    "R_m": ["625±125", "MPa"],
+    "Hardness": {
+      "HB": [230, "MPa"]
+    },
+    "Annotation": "Spring steel (strips)"
+  },
+  "Source": [
+    {
+      "Type": "Web",
+      "URL": "http://www.steelnumber.com/en/steel_composition_eu.php?name_id=95"
+    }
+  ]
+}
diff --git a/src/data/INFO.json b/src/data/INFO.json
index b87b260..a6f2225 100644
--- a/src/data/INFO.json
+++ b/src/data/INFO.json
@@ -42,7 +42,8 @@
   "Electromagnetic Data": {
     "chi_m": "Magnetic susceptibility; Molar susceptibility \\[\\chi\\ti{m} = \\kappa V\\ti{m} = \\kappa M / \\rho \\] where \\(\\kappa\\) is the volume susceptibility, \\(V\\ti{m}\\) is the molar volume of the substance, \\(M\\) the molar mass, and \\(\\rho\\) the mass density. \\(\\kappa = \\bold{M}/\\bold{H}\\) where \\(\\bold{H}\\) is the magnetic filed and \\(\\bold{M}\\) is magnetic moment per unit volume.",
     "sigma": "Electrical conductivity σ",
-    "epsilon_r": "Relative permittivity (aka dielectric constant), default values at 18 °C and 50 Hz"
+    "epsilon_r": "Relative permittivity (aka dielectric constant), default values at 18 °C and 50 Hz",
+    "mu_r": "Relative permeability. µ_r = µ / µ_0"
   },
   "Mechanical Properties": {
     "T": "Reference temperature",
@@ -76,6 +77,7 @@
       "AH": "Hard anodising rating",
       "ASA": "Sulphuric acid (Decorative Type II) anodising rating"
     },
+    "Vacuum": "Vacuum suitability.",
     "Annotation": "Annotation"
   },
   "Heat treatment": {
diff --git a/src/data/example.json b/src/data/example.json
index 7295952..b5a17f4 100644
--- a/src/data/example.json
+++ b/src/data/example.json
@@ -19,7 +19,8 @@
   "Electromagnetic Data": {
     "chi_m": [16.5e-6, "cm³/mol"],
     "sigma": ["16-18", "m/Ω/mm²"],
-    "epsilon_r": ["7±1", "F/m"]
+    "epsilon_r": ["7±1", "F/m"],
+    "mu_r": [">=1.005"]
   },
   "Mechanical Properties": {
     "T": ["20-25", "°C"],
@@ -29,6 +30,7 @@
     "K": [70, "GPa"],
     "nu": 0.35,
     "Yield strength": {
+      "R_p": ["110-130", "MPa"],
       "R_p02": ["110-130", "MPa"]
     },
     "R_m": ["230-290", "MPa"],
@@ -46,6 +48,7 @@
       "AH": 2,
       "ASA": 4
     },
+    "Vacuum": "yes",
     "Annotation": "T_Max<10h = 500 °C; T_Max>=10h = 450 °C"
   },
   "Heat treatment": {