diff --git a/src/alfasim_score/converter/alfacase/_tests/test_convert_materials/test_convert_materials.yml b/src/alfasim_score/converter/alfacase/_tests/test_convert_materials/test_convert_materials.yml
index 046389e..02b8489 100644
--- a/src/alfasim_score/converter/alfacase/_tests/test_convert_materials/test_convert_materials.yml
+++ b/src/alfasim_score/converter/alfacase/_tests/test_convert_materials/test_convert_materials.yml
@@ -34,102 +34,6 @@
   thermal_conductivity: 45.345257
   thermal_expansion: 1.2e-05
   type: solid
-- density: 65.5035
-  heat_capacity: 460.9
-  name: SDSS/125KSI
-  thermal_conductivity: 45.345257
-  thermal_expansion: 1.2e-05
-  type: solid
-- density: 65.5035
-  heat_capacity: 460.9
-  name: SDSS/125KSI
-  thermal_conductivity: 45.345257
-  thermal_expansion: 1.2e-05
-  type: solid
-- density: 65.5035
-  heat_capacity: 460.9
-  name: SDSS/125KSI
-  thermal_conductivity: 45.345257
-  thermal_expansion: 1.2e-05
-  type: solid
-- density: 65.5035
-  heat_capacity: 460.9
-  name: SDSS/125KSI
-  thermal_conductivity: 45.345257
-  thermal_expansion: 1.2e-05
-  type: solid
-- density: 65.5035
-  heat_capacity: 460.9
-  name: SDSS/125KSI
-  thermal_conductivity: 45.345257
-  thermal_expansion: 1.2e-05
-  type: solid
-- density: 65.5035
-  heat_capacity: 460.9
-  name: SDSS/125KSI
-  thermal_conductivity: 45.345257
-  thermal_expansion: 1.2e-05
-  type: solid
-- density: 65.5035
-  heat_capacity: 460.9
-  name: SDSS/125KSI
-  thermal_conductivity: 45.345257
-  thermal_expansion: 1.2e-05
-  type: solid
-- density: 65.5035
-  heat_capacity: 460.9
-  name: SDSS/125KSI
-  thermal_conductivity: 45.345257
-  thermal_expansion: 1.2e-05
-  type: solid
-- density: 65.5035
-  heat_capacity: 460.9
-  name: SDSS/125KSI
-  thermal_conductivity: 45.345257
-  thermal_expansion: 1.2e-05
-  type: solid
-- density: 65.5035
-  heat_capacity: 460.9
-  name: SDSS/125KSI
-  thermal_conductivity: 45.345257
-  thermal_expansion: 1.2e-05
-  type: solid
-- density: 65.5035
-  heat_capacity: 460.9
-  name: SDSS/125KSI
-  thermal_conductivity: 45.345257
-  thermal_expansion: 1.2e-05
-  type: solid
-- density: 65.5035
-  heat_capacity: 460.9
-  name: SDSS/125KSI
-  thermal_conductivity: 45.345257
-  thermal_expansion: 1.2e-05
-  type: solid
-- density: 65.5035
-  heat_capacity: 460.9
-  name: SDSS/125KSI
-  thermal_conductivity: 45.345257
-  thermal_expansion: 1.2e-05
-  type: solid
-- density: 65.5035
-  heat_capacity: 460.9
-  name: SDSS/125KSI
-  thermal_conductivity: 45.345257
-  thermal_expansion: 1.2e-05
-  type: solid
-- density: 65.5035
-  heat_capacity: 460.9
-  name: SDSS/125KSI
-  thermal_conductivity: 45.345257
-  thermal_expansion: 1.2e-05
-  type: solid
-- density: 65.5035
-  heat_capacity: 460.9
-  name: SDSS/125KSI
-  thermal_conductivity: 45.345257
-  thermal_expansion: 1.2e-05
-  type: solid
 - density: 1.0
   heat_capacity: 5.0
   name: Folhelho
diff --git a/src/alfasim_score/converter/alfacase/convert_alfacase.py b/src/alfasim_score/converter/alfacase/convert_alfacase.py
index 09b1869..03ba140 100644
--- a/src/alfasim_score/converter/alfacase/convert_alfacase.py
+++ b/src/alfasim_score/converter/alfacase/convert_alfacase.py
@@ -29,9 +29,8 @@ def filter_duplicated_materials(
     material_list: List[MaterialDescription],
 ) -> List[MaterialDescription]:
     """Remove the duplicated materials parsed by the reader"""
-    # TODO: implement it to filter the duplicated materials
-    # TODO: remember to get all cements (???)
-    return material_list
+    filtered = {material.name: material for material in material_list}
+    return list(filtered.values())
 
 
 class ScoreAlfacaseConverter:
@@ -69,7 +68,7 @@ def convert_materials(self) -> List[MaterialDescription]:
                     expansion=data["thermal_expansion"],
                 )
             )
-        return material_descriptions
+        return filter_duplicated_materials(material_descriptions)
 
     # TODO PWPA-1937: implement this method
     def _convert_annulus(self) -> AnnulusDescription: