diff --git a/disciplines/materials.ttl b/disciplines/materials.ttl
index e6e9e17f..25bebb0a 100644
--- a/disciplines/materials.ttl
+++ b/disciplines/materials.ttl
@@ -12,17 +12,17 @@
                                                owl:versionIRI <https://w3id.org/emmo/1.0.0-rc1/disciplines/materials> ;
                                                owl:imports <https://w3id.org/emmo/1.0.0-rc1/perspectives/physicalistic> ;
                                                dcterms:abstract "The materials module populates the physicalistic perspective with materials subclasses categorised according to modern applied physical sciences."@en ;
-                                               dcterms:creator <https://orcid.org/0000-0003-0514-9229> ,
-                                                               <https://orcid.org/0000-0003-3805-8761> ,
-                                                               <https://orcid.org/0000-0003-4065-9742> ,
+                                               dcterms:creator <https://orcid.org/0000-0002-1560-809X> ,
                                                                <https://orcid.org/0000-0002-4181-2852> ,
-                                                               <https://orcid.org/0000-0002-1560-809X> ;
+                                                               <https://orcid.org/0000-0003-0514-9229> ,
+                                                               <https://orcid.org/0000-0003-3805-8761> ,
+                                                               <https://orcid.org/0000-0003-4065-9742> ;
                                                dcterms:license "https://creativecommons.org/licenses/by/4.0/legalcode" ;
                                                dcterms:publisher <https://emmc.eu> ;
                                                dcterms:title "Materials"@en ;
-                                               :EMMO_1246b120_abbe_4840_b0f8_3e4348b24a17 "emmo@emmc.eu" ;
                                                rdfs:comment "The EMMO requires HermiT reasoner plugin in order to visualize all inferences and class hierarchy (ctrl+R hotkey in Protege)."@en ;
-                                               owl:versionInfo "1.0.0-rc1" .
+                                               owl:versionInfo "1.0.0-rc1" ;
+                                               :EMMO_1246b120_abbe_4840_b0f8_3e4348b24a17 "emmo@emmc.eu" .
 
 #################################################################
 #    Annotation properties
@@ -614,7 +614,14 @@ A single continuum individual can be the whole fluid in a pipe."""@en ,
 
 ###  https://w3id.org/emmo#EMMO_f678173d_f036_4df1_a86b_2894560be617
 :EMMO_f678173d_f036_4df1_a86b_2894560be617 rdf:type owl:Class ;
-                                           skos:prefLabel "CompositeMaterial"@en .
+                                           rdfs:subClassOf [ rdf:type owl:Restriction ;
+                                                             owl:onProperty :EMMO_dc57d998_23db_4d8e_b2cd_f346b195b846 ;
+                                                             owl:minQualifiedCardinality "2"^^xsd:nonNegativeInteger ;
+                                                             owl:onClass :EMMO_4207e895_8b83_4318_996a_72cfb32acd94
+                                                           ] ;
+                                           skos:altLabel "Composite"@en ;
+                                           skos:prefLabel "CompositeMaterial"@en ;
+                                           :EMMO_967080e5_2f42_4eb2_a3a9_c58143e835f9 "A material that contains two or more constituent materials."@en .
 
 
 ###  https://w3id.org/emmo#EMMO_fb27e6d6_159e_48a6_9c29_76dc31d8a860
@@ -622,25 +629,25 @@ A single continuum individual can be the whole fluid in a pipe."""@en ,
                                            skos:prefLabel "PolymericMaterial"@en .
 
 
-[ owl:minQualifiedCardinality "2"^^xsd:nonNegativeInteger
+[ owl:qualifiedCardinality "1"^^xsd:nonNegativeInteger
 ] .
 
-[ owl:qualifiedCardinality "1"^^xsd:nonNegativeInteger
+[ owl:minQualifiedCardinality "1"^^xsd:nonNegativeInteger
  ] .
 
 [ owl:qualifiedCardinality "1"^^xsd:nonNegativeInteger
  ] .
 
-[ owl:minQualifiedCardinality "1"^^xsd:nonNegativeInteger
+[ owl:minQualifiedCardinality "2"^^xsd:nonNegativeInteger
  ] .
 
 [ owl:qualifiedCardinality "1"^^xsd:nonNegativeInteger
  ] .
 
-[ owl:minQualifiedCardinality "1"^^xsd:nonNegativeInteger
+[ owl:qualifiedCardinality "1"^^xsd:nonNegativeInteger
  ] .
 
-[ owl:qualifiedCardinality "1"^^xsd:nonNegativeInteger
+[ owl:minQualifiedCardinality "1"^^xsd:nonNegativeInteger
  ] .
 
 ###  Generated by the OWL API (version 4.5.26.2023-07-17T20:34:13Z) https://github.com/owlcs/owlapi