@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix gs1: <https://ref.gs1.org/voc/> .
@prefix oec: <https://ref.openepcis.io/extensions/common/core/> .
@prefix eusteel: <https://ref.openepcis.io/extensions/eu/iron-steel/> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix vann: <http://purl.org/vocab/vann/> .
@prefix schema: <https://schema.org/> .

# DPP Keystone (dpp-keystone.org), a peer DPP profile this module aligns with.
@prefix dppk: <https://dpp-keystone.org/spec/v2/terms#> .

<https://ref.openepcis.io/extensions/eu/iron-steel/>
    a owl:Ontology ;
    dcterms:title "OpenEPCIS Iron & Steel Vocabulary"@en ;
    dcterms:description """Vocabulary for the iron & steel ESPR priority product group
(Regulation (EU) 2024/1781 Annex I; iron & steel named in Article 5 / the 2025-2030
working plan). Covers steel-specific identification (heat / cast / lot numbers,
grade classification per EN 10020 and designation per EN 10027), production route,
and the Material Test Certificate (EN 10204 inspection documents with EN 10168
mechanical and chemical parameters).

This module is intentionally thin per the project's four-layer delegation pattern.
Steel-specific concepts live here; cross-cutting concerns (recycled content,
substances of concern, environmental product declaration, carbon footprint,
documents) reuse the lifted `oec:` vocabulary plus `untp:` and `gs1:`.

Aligned with the DPP Keystone iron & steel profile (dppk:IronSteelProduct /
dppk:MaterialTestCertificate)."""@en ;
    dcterms:creator "OpenEPCIS" ;
    dcterms:license <https://www.apache.org/licenses/LICENSE-2.0> ;
    dcterms:created "2026-06-23"^^xsd:date ;
    dcterms:modified "2026-06-23"^^xsd:date ;
    owl:versionInfo "0.9.7" ;
    owl:versionIRI <https://ref.openepcis.io/extensions/eu/iron-steel/0.9.7> ;
    vann:preferredNamespacePrefix "eusteel" ;
    vann:preferredNamespaceUri "https://ref.openepcis.io/extensions/eu/iron-steel/" ;
    dcterms:source <https://eur-lex.europa.eu/eli/reg/2024/1781> ;
    owl:imports <https://ref.gs1.org/voc/> ;
    owl:imports <https://ref.openepcis.io/extensions/common/core/> .

# =============================================================================
# Main class
# =============================================================================

eusteel:IronSteelProduct
    a owl:Class ;
    rdfs:subClassOf gs1:Product ;
    rdfs:label "Iron & Steel Product"@en ;
    rdfs:comment """An iron or steel product (e.g. rebar, structural section, plate, coil,
wire rod) subject to the ESPR iron & steel delegated act. Carrier for steel
identification, grade/designation, production route, and the Material Test
Certificate. Reuse oec: terms for recycled content, substances of concern,
environmental product declaration, and supporting documents."""@en ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://eur-lex.europa.eu/eli/reg/2024/1781> ;
    rdfs:seeAlso oec:IronSteel ;
    rdfs:seeAlso dppk:IronSteelProduct ;
    skos:exactMatch dppk:IronSteelProduct ;
    skos:note """ESPR iron & steel product group. GS1 Web Vocabulary has gs1:Product but no
steel-specific identification or test-certificate structure. Anchored to the DPP Keystone
peer profile dppk:IronSteelProduct and to the oec:IronSteel product category."""@en ;
    skos:narrowMatch dppk:ConstructionProduct ;
    skos:narrowMatch gs1:Product ;
    skos:narrowMatch <https://vocabulary.uncefact.org/untp/Product> ;
    skos:narrowMatch dppk:Product ;
    skos:broadMatch schema:IndividualProduct ;
    skos:narrowMatch schema:Product .

# =============================================================================
# Steel identification
# =============================================================================

eusteel:heatNumber
    a owl:DatatypeProperty ;
    rdfs:label "Heat Number"@en ;
    rdfs:comment "Heat (melt) number identifying the batch of molten steel from which the product was cast (EN 10168 traceability)."@en ;
    rdfs:domain eusteel:IronSteelProduct ;
    rdfs:range xsd:string ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10168.aspx> ;
    rdfs:seeAlso dppk:heatNumber ;
    skos:exactMatch dppk:heatNumber ;
    skos:note "Steel traceability identifier per EN 10168. GS1 gs1:hasBatchLotNumber is the closest generic batch identifier; this property names the steel heat specifically."@en ;
    rdfs:seeAlso gs1:hasBatchLotNumber ;
    skos:closeMatch gs1:hasBatchLotNumber ;
    rdfs:seeAlso schema:serialNumber .

eusteel:castNumber
    a owl:DatatypeProperty ;
    rdfs:label "Cast Number"@en ;
    rdfs:comment "Cast number identifying the casting run within a heat (EN 10168 traceability)."@en ;
    rdfs:domain eusteel:IronSteelProduct ;
    rdfs:range xsd:string ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10168.aspx> ;
    rdfs:seeAlso dppk:castNumber ;
    skos:exactMatch dppk:castNumber ;
    skos:note "Steel traceability identifier per EN 10168. Closest GS1 generic is gs1:hasBatchLotNumber."@en ;
    skos:narrowMatch dppk:heatNumber ;
    rdfs:seeAlso gs1:hasBatchLotNumber ;
    skos:narrowMatch schema:serialNumber ;
    skos:narrowMatch gs1:hasBatchLotNumber .

eusteel:lotNumber
    a owl:DatatypeProperty ;
    rdfs:label "Lot Number"@en ;
    rdfs:comment "Delivery lot number for the steel product."@en ;
    rdfs:domain eusteel:IronSteelProduct ;
    rdfs:range xsd:string ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10168.aspx> ;
    rdfs:seeAlso gs1:hasBatchLotNumber ;
    rdfs:seeAlso dppk:lotNumber ;
    skos:exactMatch dppk:lotNumber ;
    skos:note "Closest GS1 generic is gs1:hasBatchLotNumber; this property names the steel delivery lot specifically."@en ;
    skos:narrowMatch gs1:hasBatchLotNumber ;
    skos:narrowMatch schema:serialNumber .

eusteel:productNumber
    a owl:DatatypeProperty ;
    rdfs:label "Product Number"@en ;
    rdfs:comment "Manufacturer product / article number for the steel product."@en ;
    rdfs:domain eusteel:IronSteelProduct ;
    rdfs:range xsd:string ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10168.aspx> ;
    rdfs:seeAlso schema:productID ;
    rdfs:seeAlso dppk:productNumber ;
    skos:exactMatch dppk:productNumber ;
    skos:note "Manufacturer product number. Anchored to schema:productID and schema:mpn. GS1 Web Vocabulary has no product/model-number property."@en ;
    rdfs:seeAlso schema:serialNumber ;
    skos:exactMatch schema:mpn ;
    skos:narrowMatch schema:serialNumber ;
    skos:closeMatch schema:productID ;
    skos:narrowMatch gs1:productID .

eusteel:purchaserOrder
    a owl:DatatypeProperty ;
    rdfs:label "Purchaser Order"@en ;
    rdfs:comment "Purchaser order reference associated with the steel delivery."@en ;
    rdfs:domain eusteel:IronSteelProduct ;
    rdfs:range xsd:string ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10168.aspx> ;
    rdfs:seeAlso schema:orderNumber ;
    rdfs:seeAlso dppk:purchaserOrder ;
    skos:exactMatch dppk:purchaserOrder ;
    skos:note "Order reference per EN 10168 certificate metadata. Anchored to schema:orderNumber."@en ;
    skos:narrowMatch schema:orderNumber .

eusteel:steelGradeClassification
    a owl:DatatypeProperty ;
    rdfs:label "Steel Grade Classification"@en ;
    rdfs:comment "Classification of the steel grade per EN 10020 (unalloyed, stainless, other alloy)."@en ;
    rdfs:domain eusteel:IronSteelProduct ;
    rdfs:range xsd:string ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10020.aspx> ;
    rdfs:seeAlso dppk:steelGradeClassification ;
    skos:exactMatch dppk:steelGradeClassification ;
    skos:note "Steel grade classification per EN 10020. No GS1, SEMICeu, or schema.org equivalent."@en .

eusteel:steelDesignation
    a owl:DatatypeProperty ;
    rdfs:label "Steel Designation"@en ;
    rdfs:comment "Steel name / number designation per EN 10027 (e.g. S355J2 / 1.0577)."@en ;
    rdfs:domain eusteel:IronSteelProduct ;
    rdfs:range xsd:string ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10027-1.aspx> ;
    rdfs:seeAlso dppk:steelDesignation ;
    skos:exactMatch dppk:steelDesignation ;
    skos:note "Steel designation per EN 10027 (parts 1 name, 2 number). No GS1, SEMICeu, or schema.org equivalent."@en .

eusteel:meltAndPourCountry
    a owl:DatatypeProperty ;
    rdfs:label "Melt and Pour Country"@en ;
    rdfs:comment "Country where the steel was melted and poured (ISO 3166-1 alpha-2). Relevant to origin and CBAM reporting."@en ;
    rdfs:domain eusteel:IronSteelProduct ;
    rdfs:range xsd:string ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://eur-lex.europa.eu/eli/reg/2024/1781> ;
    rdfs:seeAlso schema:countryOfOrigin ;
    rdfs:seeAlso dppk:meltAndPourCountry ;
    skos:exactMatch dppk:meltAndPourCountry ;
    skos:note "Melt-and-pour origin per steel-sector practice and CBAM. Anchored to schema:countryOfOrigin."@en ;
    skos:narrowMatch schema:addressCountry ;
    skos:closeMatch schema:countryOfOrigin ;
    skos:narrowMatch gs1:countryOfOriginStatement ;
    skos:narrowMatch <https://vocabulary.uncefact.org/untp/countryOfProduction> ;
    skos:narrowMatch gs1:countryOfOrigin ;
    skos:narrowMatch gs1:countryCode ;
    rdfs:seeAlso dppk:productionLocationCountry ;
    rdfs:seeAlso <https://vocabulary.uncefact.org/untp/addressCountry> ;
    rdfs:seeAlso dppk:addressCountry ;
    rdfs:seeAlso dppk:countryOfOrigin ;
    skos:narrowMatch <https://vocabulary.uncefact.org/untp/countryOfOperation> ;
    skos:narrowMatch <https://vocabulary.uncefact.org/untp/countryName> ;
    rdfs:seeAlso <https://vocabulary.uncefact.org/untp/countryCode> .

eusteel:cbamReportId
    a owl:DatatypeProperty ;
    rdfs:label "CBAM Report ID"@en ;
    rdfs:comment "Identifier of the Carbon Border Adjustment Mechanism report associated with the steel product."@en ;
    rdfs:domain eusteel:IronSteelProduct ;
    rdfs:range xsd:string ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://eur-lex.europa.eu/eli/reg/2023/956> ;
    rdfs:seeAlso dppk:cbamReportId ;
    skos:exactMatch dppk:cbamReportId ;
    skos:note "CBAM (Regulation (EU) 2023/956) report reference. No GS1, SEMICeu, or schema.org equivalent."@en ;
    skos:closeMatch schema:reportNumber .

# =============================================================================
# Production / technology route
# =============================================================================

eusteel:TechnologyRoute
    a owl:Class ;
    rdfs:label "Steel Production Technology Route"@en ;
    rdfs:comment "Primary steelmaking route, a key driver of embodied carbon."@en ;
    owl:oneOf (
        eusteel:BlastFurnaceBOF
        eusteel:ElectricArcFurnace
        eusteel:OpenHearthFurnace
        eusteel:OtherRoute
    ) ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://eur-lex.europa.eu/eli/reg/2024/1781> ;
    skos:note "Steelmaking route classification. No GS1, SEMICeu, or schema.org equivalent."@en .

eusteel:BlastFurnaceBOF   a eusteel:TechnologyRoute ; rdfs:label "Blast Furnace / Basic Oxygen Furnace"@en ; skos:notation "BF-BOF" .
eusteel:ElectricArcFurnace a eusteel:TechnologyRoute ; rdfs:label "Electric Arc Furnace"@en ; skos:notation "EAF" .
eusteel:OpenHearthFurnace a eusteel:TechnologyRoute ; rdfs:label "Open Hearth Furnace"@en ; skos:notation "OHF" .
eusteel:OtherRoute        a eusteel:TechnologyRoute ; rdfs:label "Other Route"@en ; skos:notation "other" .

eusteel:technologyRoute
    a owl:ObjectProperty ;
    rdfs:label "Technology Route"@en ;
    rdfs:comment "Primary steelmaking route used to produce the product."@en ;
    rdfs:domain eusteel:IronSteelProduct ;
    rdfs:range eusteel:TechnologyRoute ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://eur-lex.europa.eu/eli/reg/2024/1781> ;
    rdfs:seeAlso dppk:technologyRoute ;
    skos:exactMatch dppk:technologyRoute ;
    skos:note "Production-route classifier; DPP Keystone expresses dppk:technologyRoute as free text. No GS1, SEMICeu, or schema.org equivalent."@en .

# =============================================================================
# Material Test Certificate (EN 10204 inspection document, EN 10168 metadata)
# =============================================================================

eusteel:MaterialTestCertificate
    a owl:Class ;
    rdfs:label "Material Test Certificate"@en ;
    rdfs:comment """An inspection document for metallic products per EN 10204 (type 2.1, 2.2,
3.1, or 3.2), carrying the EN 10168 mechanical and chemical test parameters that
substantiate the declared grade."""@en ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10204.aspx> ;
    rdfs:seeAlso schema:Certification ;
    rdfs:seeAlso dppk:MaterialTestCertificate ;
    skos:exactMatch dppk:MaterialTestCertificate ;
    skos:narrowMatch schema:Certification ;
    skos:note """Mill test certificate (EN 10204 / EN 10168). schema:Certification is the generic
upstream; this class names the steel inspection document and its EN 10168 parameter set.
Anchored to the DPP Keystone peer profile dppk:MaterialTestCertificate."""@en ;
    skos:narrowMatch gs1:CertificationDetails .

eusteel:mtc
    a owl:ObjectProperty ;
    rdfs:label "Material Test Certificate"@en ;
    rdfs:comment "Links a steel product to its Material Test Certificate (EN 10204)."@en ;
    rdfs:domain eusteel:IronSteelProduct ;
    rdfs:range eusteel:MaterialTestCertificate ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10204.aspx> ;
    rdfs:seeAlso dppk:mtc ;
    skos:exactMatch dppk:mtc ;
    skos:note "Mill test certificate link per EN 10204. Anchored to the DPP Keystone peer profile dppk:mtc."@en .

eusteel:mtcInspectionType
    a owl:DatatypeProperty ;
    rdfs:label "MTC Inspection Document Type"@en ;
    rdfs:comment "EN 10204 inspection document type: 2.1, 2.2, 3.1, or 3.2."@en ;
    rdfs:domain eusteel:MaterialTestCertificate ;
    rdfs:range xsd:string ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10204.aspx> ;
    skos:note "EN 10204 inspection document type. No GS1, SEMICeu, or schema.org equivalent."@en ;
    skos:narrowMatch gs1:certificationType .

eusteel:mtcNominalSize
    a owl:DatatypeProperty ;
    rdfs:label "MTC Nominal Size"@en ;
    rdfs:comment "Nominal dimension of the tested product (mm)."@en ;
    rdfs:domain eusteel:MaterialTestCertificate ;
    rdfs:range xsd:decimal ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10168.aspx> ;
    rdfs:seeAlso dppk:mtcNominalSize ;
    skos:exactMatch dppk:mtcNominalSize ;
    skos:note "EN 10168 dimensional parameter."@en ;
    skos:narrowMatch schema:size ;
    skos:closeMatch gs1:sizeDimension ;
    skos:narrowMatch <https://gs1-epcis-reg.org/rail/voc/data#setNominalValues> .

eusteel:mtcWeightTolerance
    a owl:DatatypeProperty ;
    rdfs:label "MTC Weight Tolerance"@en ;
    rdfs:comment "Permitted weight tolerance of the tested product (%)."@en ;
    rdfs:domain eusteel:MaterialTestCertificate ;
    rdfs:range xsd:decimal ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10168.aspx> ;
    rdfs:seeAlso dppk:mtcWeightTolerance ;
    skos:exactMatch dppk:mtcWeightTolerance ;
    skos:note "EN 10168 dimensional parameter."@en .

eusteel:mtcYieldStrength
    a owl:DatatypeProperty ;
    rdfs:label "MTC Yield Strength"@en ;
    rdfs:comment "Measured yield strength Re (MPa)."@en ;
    rdfs:domain eusteel:MaterialTestCertificate ;
    rdfs:range xsd:decimal ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10168.aspx> ;
    rdfs:seeAlso dppk:mtcYieldStrength ;
    skos:exactMatch dppk:mtcYieldStrength ;
    skos:note "EN 10168 mechanical parameter."@en .

eusteel:mtcTensileStrength
    a owl:DatatypeProperty ;
    rdfs:label "MTC Tensile Strength"@en ;
    rdfs:comment "Measured ultimate tensile strength Rm (MPa)."@en ;
    rdfs:domain eusteel:MaterialTestCertificate ;
    rdfs:range xsd:decimal ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10168.aspx> ;
    skos:note "EN 10168 mechanical parameter (Rm)."@en .

eusteel:mtcYieldStrengthRatio
    a owl:DatatypeProperty ;
    rdfs:label "MTC Yield Strength Ratio"@en ;
    rdfs:comment "Ratio of yield strength to tensile strength (Re/Rm)."@en ;
    rdfs:domain eusteel:MaterialTestCertificate ;
    rdfs:range xsd:decimal ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10168.aspx> ;
    rdfs:seeAlso dppk:mtcYieldStrengthRatio ;
    skos:exactMatch dppk:mtcYieldStrengthRatio ;
    skos:note "EN 10168 mechanical parameter."@en .

eusteel:mtcElongation
    a owl:DatatypeProperty ;
    rdfs:label "MTC Elongation"@en ;
    rdfs:comment "Percentage elongation after fracture (A%)."@en ;
    rdfs:domain eusteel:MaterialTestCertificate ;
    rdfs:range xsd:decimal ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10168.aspx> ;
    rdfs:seeAlso dppk:mtcElongation ;
    skos:exactMatch dppk:mtcElongation ;
    skos:note "EN 10168 mechanical parameter."@en .

eusteel:mtcRelativeRibArea
    a owl:DatatypeProperty ;
    rdfs:label "MTC Relative Rib Area"@en ;
    rdfs:comment "Relative rib area fR for ribbed reinforcing steel (bond performance)."@en ;
    rdfs:domain eusteel:MaterialTestCertificate ;
    rdfs:range xsd:decimal ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10168.aspx> ;
    rdfs:seeAlso dppk:mtcRelativeRibArea ;
    skos:exactMatch dppk:mtcRelativeRibArea ;
    skos:note "EN 10168 mechanical parameter for reinforcing steel."@en .

eusteel:mtcCarbonContent
    a owl:DatatypeProperty ;
    rdfs:label "MTC Carbon Content"@en ;
    rdfs:comment "Carbon content from the cast/ladle analysis (mass %)."@en ;
    rdfs:domain eusteel:MaterialTestCertificate ;
    rdfs:range xsd:decimal ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10168.aspx> ;
    rdfs:seeAlso dppk:mtcCarbonContent ;
    skos:exactMatch dppk:mtcCarbonContent ;
    skos:note "EN 10168 chemical parameter."@en .

eusteel:mtcPhosphorusContent
    a owl:DatatypeProperty ;
    rdfs:label "MTC Phosphorus Content"@en ;
    rdfs:comment "Phosphorus content from the cast analysis (mass %)."@en ;
    rdfs:domain eusteel:MaterialTestCertificate ;
    rdfs:range xsd:decimal ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10168.aspx> ;
    rdfs:seeAlso dppk:mtcPhosphorusContent ;
    skos:exactMatch dppk:mtcPhosphorusContent ;
    skos:note "EN 10168 chemical parameter."@en .

eusteel:mtcSulfurContent
    a owl:DatatypeProperty ;
    rdfs:label "MTC Sulfur Content"@en ;
    rdfs:comment "Sulfur content from the cast analysis (mass %)."@en ;
    rdfs:domain eusteel:MaterialTestCertificate ;
    rdfs:range xsd:decimal ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10168.aspx> ;
    rdfs:seeAlso dppk:mtcSulfurContent ;
    skos:exactMatch dppk:mtcSulfurContent ;
    skos:note "EN 10168 chemical parameter."@en .

eusteel:mtcCopperContent
    a owl:DatatypeProperty ;
    rdfs:label "MTC Copper Content"@en ;
    rdfs:comment "Copper content from the cast analysis (mass %)."@en ;
    rdfs:domain eusteel:MaterialTestCertificate ;
    rdfs:range xsd:decimal ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10168.aspx> ;
    rdfs:seeAlso dppk:mtcCopperContent ;
    skos:exactMatch dppk:mtcCopperContent ;
    skos:note "EN 10168 chemical parameter."@en .

eusteel:mtcNitrogenContent
    a owl:DatatypeProperty ;
    rdfs:label "MTC Nitrogen Content"@en ;
    rdfs:comment "Nitrogen content from the cast analysis (mass %)."@en ;
    rdfs:domain eusteel:MaterialTestCertificate ;
    rdfs:range xsd:decimal ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10168.aspx> ;
    rdfs:seeAlso dppk:mtcNitrogenContent ;
    skos:exactMatch dppk:mtcNitrogenContent ;
    skos:note "EN 10168 chemical parameter."@en .

eusteel:mtcCarbonEquivalent
    a owl:DatatypeProperty ;
    rdfs:label "MTC Carbon Equivalent"@en ;
    rdfs:comment "Carbon equivalent value (CEV / CET), a weldability indicator derived from the cast analysis."@en ;
    rdfs:domain eusteel:MaterialTestCertificate ;
    rdfs:range xsd:decimal ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10168.aspx> ;
    rdfs:seeAlso dppk:mtcCarbonEquivalent ;
    skos:exactMatch dppk:mtcCarbonEquivalent ;
    skos:note "EN 10168 derived chemical parameter (weldability)."@en .

eusteel:mtcSteelProcess
    a owl:DatatypeProperty ;
    rdfs:label "MTC Steel Process"@en ;
    rdfs:comment "Steelmaking process recorded on the certificate (free text where the controlled eusteel:TechnologyRoute is not used)."@en ;
    rdfs:domain eusteel:MaterialTestCertificate ;
    rdfs:range xsd:string ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10168.aspx> ;
    rdfs:seeAlso dppk:mtcSteelProcess ;
    skos:exactMatch dppk:mtcSteelProcess ;
    skos:note "EN 10168 process descriptor."@en ;
    rdfs:seeAlso <https://vocabulary.uncefact.org/untp/processCategory> .

eusteel:mtcFinishing
    a owl:DatatypeProperty ;
    rdfs:label "MTC Finishing"@en ;
    rdfs:comment "Finishing / delivery condition recorded on the certificate (e.g. hot-rolled, normalised, quenched and tempered)."@en ;
    rdfs:domain eusteel:MaterialTestCertificate ;
    rdfs:range xsd:string ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10168.aspx> ;
    rdfs:seeAlso dppk:mtcFinishing ;
    skos:exactMatch dppk:mtcFinishing ;
    skos:note "EN 10168 delivery-condition descriptor."@en .

eusteel:mtcRadiometricControl
    a owl:DatatypeProperty ;
    rdfs:label "MTC Radiometric Control"@en ;
    rdfs:comment "Radiometric (radioactivity) control result for the steel, where declared."@en ;
    rdfs:domain eusteel:MaterialTestCertificate ;
    rdfs:range xsd:decimal ;
    rdfs:isDefinedBy <https://ref.openepcis.io/extensions/eu/iron-steel/> ;
    dcterms:source <https://www.cencenelec.eu/standards/EN/Pages/EN-10168.aspx> ;
    rdfs:seeAlso dppk:mtcRadiometricControl ;
    skos:exactMatch dppk:mtcRadiometricControl ;
    skos:note "EN 10168 radiometric control parameter."@en .