ASTM A325 Specification - Boltport Fasteners

ASTM A325 Specification for heat treated carbon & weathering steel bolts, steel with 120 ksi Minimum Tensile Strength, for use in structural ... ASTMA325Specification Home Specifications ASTM ASTMA325 Introduction BoltGrades ChemicalComposition MechanicalProperties RecommendedNuts&Washers ASTMA325Specificationforheattreatedcarbon&weatheringsteelbolts,steelwith120ksiMinimumTensileStrength,foruseinstructuralboltingapplications. ASTMA325specificationcoverstwotypesofquenchedandtemperedsteelheavyhexboltsinmetricandimperialsizesforstructuralpurpose.Thespecificationincludestype1&type3fastenermaterialintendedforstructuralboltingpurpose.Type1isaheattreatedhighstrengthplaincarbon,carbon-boron,alloysteeloralloyboronsteelboltingmaterialswithminimumtensilerequirementof105ksi,yield81ksiandmaximumhardnesslimitof25-35HRC.Type3isheattreatedweatheringsteelboltingmaterialwithsimilarstrengthrequirementtotype1butgreatercorrosionprotectionandareprominentlyusedinhumidweatherconditions. BoltGrades Grade Class/Description Type1 CarbonSteel,CarbonBoronSteel,AlloySteelorAlloyBoronSteel Type2 Withdrawn Type3 WeatheringSteel A B C D E F ChemicalComposition Element Type1,% Type3,% CarbonSteel CarbonBoronSteel AlloySteel AlloyBoronSteel A B C D E F Carbon 0.28-0.55 0.28-0.55 0.28-0.55 0.28-0.55 0.31-0.42 0.36-0.50 0.14-0.26 0.14-0.26 0.18-0.27 0.19-0.26 Manganese 0.57min 0.57min 0.57min 0.57min 0.86-1.24 0.67-0.93 0.76-1.39 0.36-1.24 0.56-1.04 0.86-1.24 Phosphorus 0.048max 0.048max 0.040max 0.040max 0.040max 0.040max 0.040max 0.040max 0.040max 0.040max Sulfur 0.058max 0.058max 0.045max 0.045max 0.045max 0.045max 0.045max 0.045max 0.045max 0.045max Silicon 0.13-0.32 0.08-0.32 0.13-0.37 0.13-0.37 0.13-0.37 0.25-0.55 0.13-0.37 0.20-0.55 0.13-0.37 0.13-0.37 Boron ... 0.0005-0.003 ... 0.0005-0.003 ... ... ... ... ... ... Copper ... ... ... ... 0.22-0.48 0.17-0.43 0.17-0.53 0.27-0.53 0.27-0.63 0.17-0.43 Nickel ... ... ... ... 0.22-0.48 0.47-0.83 0.22-0.53 0.47-0.83 0.27-0.63 0.17-0.43 Chromium ... ... ... ... 0.42-0.68 0.47-0.83 0.27-0.53 0.45-1.05 0.55-0.95 0.42-0.68 Vanadium ... ... ... ... ... ... 0.010min ... ... ... Molybdenum ... ... ... ... ... 0.07max ... 0.11max ... ... Titanium ... ... ... ... ... ... ... 0.06max ... ... MechanicalProperties NominalDiameter,Inch TensileStrength,min,ksi YieldStrength,min,ksi Elongationin4D,min,% ReductioninArea,min,% BoltLength,Inch Brinell RockwellC Min Max Min Max 1/2"to1",Inclusive 120 92 14 35 Lessthan2D2Dandover 253... 319319 25... 3434 Over1to1-1/2" 105 81 14 35 Lessthan3D3Dandover 223... 286286 19... 3030 whereDisnominaldiameterorthreadsize. RecommendedNuts&Washers Nuts Washers Type1 Type3 Type1 Type3 Plain Galvanized Plain ASTMA563GradeC,C3,D,DH,DH3 ASTMA563GradeDH ASTMA563GradeC3,DH3 ASTMF436Type1 ASTMF436Type3