ASTM A325 - Portland Bolt

Prior to its withdrawal in 2016, the ASTM A325 specification covered high strength heavy hex structural bolts from 1/2″ diameter through 1-1/2″ ... 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ThisinfoandmoreonourspecializedA325Microsite Priortoitswithdrawalin2016,theASTMA325specificationcoveredhighstrengthheavyhexstructuralboltsfrom1/2″diameterthrough1-1/2″diameter.Theseboltsareintendedforuseinstructuralconnectionsandthereforehaveshorterthreadlengthsthanstandardhexbolts.Refertothe StructuralBolts pageofoursiteforthreadlengthsandotherrelateddimensions. Thisspecificationisapplicabletoheavyhexstructuralboltsonly.Forboltsofotherconfigurationsandthreadlengthswithsimilarmechanicalproperties,see SpecificationA449. Boltsforgeneralapplications,includinganchorbolts,arecoveredbySpecificationA449.AlsorefertoSpecificationA449forquenchedandtemperedsteelboltsandstudswithdiametersgreaterthan1-1/2″butwithsimilarmechanicalproperties. A325Types TYPE1 Mediumcarbon,carbonboron,ormediumcarbonalloysteel. TYPE2 WithdrawnNovember1991. TYPE3 Weatheringsteel. T FullythreadedA325.(Restrictedto4timesthediameterinlength) M MetricA325. A325ConnectionTypes SC Slipcriticalconnection. N Bearingtypeconnectionwiththreadsincludedintheshearplane. X Bearing-typeconnectionwiththreadsexcludedfromtheshearplane. A325MechanicalProperties Size Tensile,ksi Yield,ksi Elong.%,min RA%,min 1⁄2-1 120min 92min 14 35 11⁄8-11⁄2 105min 81min 14 35 A325Type1ChemicalProperties HeatAnalysis 120ksi,% 150ksi,% Carbon 0.30–0.52 0.30–0.48* Manganese 0.60min 0.60min Phosphorus 0.035max 0.035max Sulfur 0.040max 0.040max Silicon 0.15–0.30 - Boron 0.003max 0.003max Copper - - Nickel - - Chromium - - Molybdenum - - *Carbon0.35-0.53%for1-1/2”A490/150ksibolts A325Type3ChemicalProperties HeatAnalysis 120ksi,%CompA 120ksi,%CompB 120ksi,%Index 150ksi,%Index Carbon 0.33–0.40 0.38–0.48 0.30–0.52 0.30–0.53 Manganese 0.90–1.20 0.70–0.90 0.60min 0.60min Phosphorus 0.035max 0.035max 0.035max 0.035max Sulfur 0.040max 0.040max 0.040max 0.040max Silicon 0.15–0.30 0.30–0.50     Copper 0.25–0.45 0.20–0.40 0.20–0.60 0.20–0.60 Nickel 0.25–0.45 0.50–0.80 0.20min* 0.20min* Chromium 0.45–0.65 0.50–0.80 0.20min 0.20min Molybdenum   0.06max 0.10min* 0.10min* *EitherNickelorMolybdenummustbepresentintheamountspecified *CorrosionIndexbasedonASTMGuideG101 A325RecommendedHardware Nuts Washers Type1 Type3 Type1 Type3 Plain Galvanized Plain A563C,C3,D,DH,DH3 A563DH A563C3,DH3 F436-1 F436-3 Note:NutsconformingtoA194Grade2HareasuitablesubstituteforusewithA325heavyhexstructuralbolts.TheASTMA563NutCompatibilityCharthasacompletelistofspecifications. MoreInformation YoucanfindmoreASTMA325informationandFAQsonourA325-focusedmicrositewww.a325bolts.com. 2020-11-17 PortlandBolt