<?xml version="1.0"?>
<PropertySetDef xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" ifdguid="ce836f00d1ed11e1800000215ad4efdf" templatetype="PSET_TYPEDRIVENOVERRIDE" xsi:noNamespaceSchemaLocation="http://buildingSMART-tech.org/xml/psd/PSD_IFC4.xsd">
  <IfcVersion version="IFC4" />
  <Name>Pset_MaterialSteel</Name>
  <Definition>A set of extended mechanical properties related to steel (or other metallic and isotropic) materials.</Definition>
  <Applicability />
  <ApplicableClasses>
    <ClassName>IfcMaterial/Steel</ClassName>
  </ApplicableClasses>
  <ApplicableTypeValue>IfcMaterial/Steel</ApplicableTypeValue>
  <PropertyDefs>
    <PropertyDef ifdguid="d3e0b980d1ed11e1800000215ad4efdf">
      <Name>YieldStress</Name>
      <Definition>A measure of the yield stress (or characteristic 0.2 percent proof stress) of the material.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcPressureMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Yield Stress</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="d9d69a80d1ed11e1800000215ad4efdf">
      <Name>UltimateStress</Name>
      <Definition>A measure of the ultimate stress of the material.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcPressureMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Ultimate Stress</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="df33e500d1ed11e1800000215ad4efdf">
      <Name>UltimateStrain</Name>
      <Definition>A measure of the (engineering) strain at the state of ultimate stress of the material.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcPositiveRatioMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Ultimate Strain</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="e4912f80d1ed11e1800000215ad4efdf">
      <Name>HardeningModule</Name>
      <Definition>A measure of the hardening module of the material (slope of stress versus strain curve after yield range).</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcModulusOfElasticityMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Hardening Module</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="e9ee7a00d1ed11e1800000215ad4efdf">
      <Name>ProportionalStress</Name>
      <Definition>A measure of the proportional stress of the material. It describes the stress before the first plastic deformation occurs and is commonly measured at a deformation of 0.01%.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcPressureMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Proportional Stress</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="efe45b00d1ed11e1800000215ad4efdf">
      <Name>PlasticStrain</Name>
      <Definition>A measure of the permanent displacement, as in slip or twinning, which remains after the stress has been removed. Currently applied to a strain of 0.2% proportional stress of the material.</Definition>
      <PropertyType>
        <TypePropertySingleValue>
          <DataType type="IfcPositiveRatioMeasure" />
        </TypePropertySingleValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Plastic Strain</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
    <PropertyDef ifdguid="f541a580d1ed11e1800000215ad4efdf">
      <Name>Relaxations</Name>
      <Definition>Measures of decrease in stress over long time intervals resulting from plastic flow. Different relaxation values for different initial stress levels for a material may be given. It describes the time dependent relative relaxation value for a given initial stress level at constant strain.
Relating values are the "RelaxationValue". Related values are the "InitialStress"</Definition>
      <PropertyType>
        <TypePropertyTableValue>
          <Expression />
          <DefiningValue>
            <DataType type="IfcNormalisedRatioMeasure" />
          </DefiningValue>
          <DefinedValue>
            <DataType type="IfcNormalisedRatioMeasure" />
          </DefinedValue>
        </TypePropertyTableValue>
      </PropertyType>
      <NameAliases>
        <NameAlias lang="en">Relaxations</NameAlias>
      </NameAliases>
      <DefinitionAliases>
        <DefinitionAlias lang="en" />
      </DefinitionAliases>
    </PropertyDef>
  </PropertyDefs>
  <PsetDefinitionAliases>
    <PsetDefinitionAlias lang="en" />
  </PsetDefinitionAliases>
</PropertySetDef>