MG701TIGMARAGINGTOOLSTEELTIGWIREDCSTRAIGHTPOLARITY(DC-)GENERALCHARACTERISTICS:MG701Tisanickel,cobalt,molybdenumwiredesignedtoweldmaragingtoolsteels.TheasweldedhardnessofRC30-33allowsdepositstobemachinedpriortomaraging(agehardening).Maragingat450°Cfor2hoursproducesahardnessofRC48-52.Maragingsteelsdonotrequirepreheat;othersteelsshouldbepreheatedtotheirrecommendedpreheattemperaturepriortowelding.APPLICATI***:Build-upandrepairofhotworkingdiesandtoolsmadefrommaragingsteelsusedinaluminumandzincdiecastingindustry.Useforbuild-uponH-11andH-13toolsteelswhenmachiningintheasweldedconditionisdesirable.Whenusedinaluminumandzincdiecastingdies,depositswillhardeninservice.TECHNICALDATA:TypicalDepositChemistryC0.02Mn0.10Si0.50S0.02P0.01Ni19.25Co7.5Mo4.60Hardnessaswelded................................................................................RC30-33agehardened2hours@450°C...................................................RC48-52Machinabilityaswelded................................................................................GoodCurrent....................................................................................DC-straightpolarityPROCEDURE:Whentheprocessisgastungstenarcwelding(TIG)usedirectcurrentstraightpolarity,onehundredpercentargongasisrecommended.Adjusttheamperageaccordingtothebasemetalthicknessandtheamountofdepositrequired.Donotpreheatmaragingsteels.Othersteelsuserecommendedpreheattemperatures品牌：美国Messer)