Designation:F2220−15AnAmericanNationalStandardStandardSpecificationforHeadforms1ThisstandardisissuedunderthefixeddesignationF2220;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONThisspecificationidentifiestheheadformsusedfortestingprotectiveheadgearinindividualASTMInternationaltestmethodsandperformancestandards(standardspecifications).ThisspecificationwascloselybasedonISODIS6220,whichwasneverpublishedasanInternationalStandardandisnolongeravailable.EN960,apublishedstandard,isalsobasedonISODIS6220andhasbeenusedasabasisforthisstandard.1.Scope1.1Thisstandardspecifiesthematerials,sizing,andmanu-facturingdetailsoftestheadformsforuseinthetestingofprotectiveheadgear.Detailsoftheexteriordimensionoftheheadformsareincluded.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.2.ReferencedDocuments2.1ASTMStandards:2B92/B92MSpecificationforUnalloyedMagnesiumIngotandStickForRemelting2.2OtherStandards:EN960HeadformsforUseintheTestingofProtectiveHelmets3.Terminology3.1Definitions:3.1.1basicplane,n—ananatomicalplanethatincludesthesuperiorrimoftheexternalauditorymeatuses(upperedgeoftheexternalopeningsoftheear)andtheinferiormarginoftheorbit(thelowestpointoftheflooroftheeyesocket)(seeFigs.1and2).3.1.2coronalplane,n—ananatomicalplaneperpendiculartoboththebasicandmidsagittalplanesandpassingthroughthesuperiorrimsoftherightandleftexternalauditorymeatuses.Thetransverseplanecorrespondstothecoronalplane(seeFigs.1and2).3.1.3impactheadforms,n—headformsusedforimpacttestingofprotectiveheadgear.Impactheadformsshallconformtotheexternaldimensiondefinedinthisspecification.Theseheadformsshallmeetthematerial,dimensions,mass,andcenterofgravityrequirementsofthisspecification.Theseheadformsshallincludesurfacemarkingscorrespondingtot...
