diff --git a/material_database.cpp b/material_database.cpp
index b39793b..36990c3 100644
--- a/material_database.cpp
+++ b/material_database.cpp
@@ -7,31 +7,35 @@ namespace catima{
         if(id>0 && id<ELEMENT_DENSITY_MAXZ){
             return Material(0,id,element_density(id),0.0);
         }
-        switch(id){
-            case material::PLASTIC : return Material({{0,1,10},{0,6,9}},1.032);
-            case material::AIR :     return Material({{0,7,0.7810}, {0,8,0.2095},{0,18,0.0095}},0.0012);
-            case material::CH2 :     return Material({{0,6,1}, {0,1,2}},0.94);
-            case material::LH2 :     return Material({{0,1,1}},0.0708);
-            case material::LD2 :     return Material({{2.014,1,1}},0.162);
-            case material::WATER :   return Material({{0,1,2},{0,8,1}},1.0);
-            case material::DIAMOND:  return Material(0,6,3.52,0.0);
-            case material::GLASS :   return Material({{0,14,1},{0,8,2}},2.4 );
-            case material::ALMG3:    return Material(0,13,2.67,0.0);
-            case material::ARCO2_30: return Material({{0,18,7},{0,8,6},{0,6,3}}, 0.00171);
-            case material::CF4 :     return Material({{0,6,1},{0,9,4}}, 0.00372 );
-            case material::ISOBUTANE:return Material({{0,6,4}, {0,1,10}},0.00251);
-            case material::KAPTON :  return Material({{0,1,10}, {0,6,22},{0,7,2},{0,8,5}},1.42);
-            case material::MYLAR :   return Material({{0,6,5}, {0,1,4},{0,8,2}},1.38);
-            case material::NAF :     return Material({{0,11,1}, {0,9,1}},2.56);
-            case material::P10:      return Material({{0,18,9},{0,6,1},{0,1,4}}, 0.00166);
-            case material::POLYOLEFIN:  return Material({{0,1,16},{0,6,10}}, 0.9);
-            case material::CMO2:      return Material({{0,96,1},{0,8,2}}, 12.0);
-            case material::SUPRASIL :   return Material({{0,14,1},{0,8,2}},2.2 );
-            case material::HAVAR :   return Material({{0,27,42},{0,24,40},{0,28,13},{0,26,19},{0,74,1}},8.3);
-            case material::STEEL :   return Material({{0,26,74},{0,24,18},{0,28,8}},8.0);
+        return get_compound(static_cast<material>(id));
+        }
+
+    Material get_compound(material m){
+      switch(m){
+		 case material::Plastics:	 return Material({{0,1,10},{0,6,9}},1.032);
+		 case material::Air:	 return Material({{0,7,0.781},{0,8,0.2095},{0,18,0.0095}},0.0012);
+		 case material::CH2:	 return Material({{0,6,1},{0,1,2}},0.94);
+		 case material::LH2:	 return Material({{0,1,1}},0.0708);
+		 case material::LD2:	 return Material({{2.01355,1,1}},0.162);
+		 case material::Water:	 return Material({{0,1,2},{0,8,1}},1);
+		 case material::Diamond:	 return Material({{0,6,1}},3.52);
+		 case material::Glass:	 return Material({{0,14,1},{0,8,2}},2.4);
+		 case material::ALMG3:	 return Material({{0,13,1}},2.67);
+		 case material::ArCO2_30:	 return Material({{0,18,7},{0,8,6},{0,6,3}},0.00171);
+		 case material::CF4:	 return Material({{0,6,1},{0,9,4}},0.00372);
+		 case material::Isobutane:	 return Material({{0,6,4},{0,1,10}},0.00251);
+		 case material::Kapton:	 return Material({{0,1,10},{0,6,22},{0,7,2},{0,8,5}},1.42);
+		 case material::Mylar:	 return Material({{0,6,5},{0,1,4},{0,8,2}},1.38);
+		 case material::NaF:	 return Material({{0,11,1},{0,9,1}},2.56);
+		 case material::P10:	 return Material({{0,18,9},{0,6,1},{0,1,4}},0.00166);
+		 case material::PolyOlefin:	 return Material({{0,8,10},{0,1,16}},0.9);
+		 case material::CmO2:	 return Material({{0,96,1},{0,8,2}},12);
+		 case material::Suprasil:	 return Material({{0,14,1},{0,8,2}},2.2);
+		 case material::HAVAR:	 return Material({{0,27,42},{0,24,20},{0,28,13},{0,74,3},{0,42,2},{0,26,20}},8.3);
+		 case material::Steel:	 return Material({{0,26,74},{0,24,18},{0,28,8}},8);
             default:break;
              }
         return Material();
-        }
+    }
 
-}
+}  // namespace catima
diff --git a/material_database.h b/material_database.h
index 168e423..bfb75d3 100644
--- a/material_database.h
+++ b/material_database.h
@@ -4,33 +4,36 @@
 
 namespace catima{
 
-    //namespace material{
-        enum material{
-            PLASTIC = 201,
-            AIR = 202,
-            CH2,
-            LH2,
-            LD2,
-            WATER,
-            DIAMOND,
-            GLASS,
-            ALMG3,
-            ARCO2_30,
-            CF4,
-            ISOBUTANE,
-            KAPTON,
-            MYLAR,
-            NAF,
-            P10,
-            POLYOLEFIN,
-            CMO2,
-            SUPRASIL,
-            HAVAR,
-            STEEL = 221
+        enum class material{
+		 Plastics = 201,
+		 Air = 202,
+		 CH2 = 203,
+		 LH2 = 204,
+		 LD2 = 205,
+		 Water = 206,
+		 Diamond = 207,
+		 Glass = 208,
+		 ALMG3 = 209,
+		 ArCO2_30 = 210,
+		 CF4 = 211,
+		 Isobutane = 212,
+		 Kapton = 213,
+		 Mylar = 214,
+		 NaF = 215,
+		 P10 = 216,
+		 PolyOlefin = 217,
+		 CmO2 = 218,
+		 Suprasil = 219,
+		 HAVAR = 220,
+		 Steel = 221
         };
-    //}
 
-    Material get_material(int);
+      Material get_compound(material m);
+      Material get_material(int id);
+      inline Material get_material(material m){
+            return get_compound(m);
+      };
+
 }
 
-#endif
\ No newline at end of file
+#endif
diff --git a/tests/test_calculations.cpp b/tests/test_calculations.cpp
index af6bb3d..868834a 100644
--- a/tests/test_calculations.cpp
+++ b/tests/test_calculations.cpp
@@ -330,7 +330,7 @@ const lest::test specification[] =
     },
     CASE("default material calculations"){
         catima::Projectile p{12,6,6,350};
-        auto air = catima::get_material(catima::material::AIR);
+        auto air = catima::get_material(catima::material::Air);
         air.thickness(0.500);
         auto res = catima::calculate(p(350),air);
         EXPECT(res.Eout == approx(345.6).epsilon(1e-2));
diff --git a/tests/test_structures.cpp b/tests/test_structures.cpp
index a9c83b2..0d9ea69 100644
--- a/tests/test_structures.cpp
+++ b/tests/test_structures.cpp
@@ -70,7 +70,7 @@ const lest::test specification[] =
         EXPECT(m.density() == 2.0);
         EXPECT(m.M() == 12.0107);
 
-        m = catima::get_material(catima::material::WATER);
+        m = catima::get_material(catima::material::Water);
         EXPECT(m.get_element(0).first.A == 1.00794);
         EXPECT(m.get_element(0).first.Z == 1);
         EXPECT(m.get_element(1).first.A == 15.9994);