Type440CStainlessSteelprovidestheabilitytoachieveandmaintainexceptionalhardnessandwear
resistanceaswellasgoodstrengthandmoderateresistancetocorrosion.OntheRockwell
Chardnessscale,type440CStainlessSteelmeasuresbetween58and65.Duetotheseadvantages,
alloy440Cismostoftenusedinballbearingsandraces,gaugeblocks,moldsanddies,valve
components,knives,cutlery,andmeasuringinstruments.Itisrecommendedtomachinetype440C
StainlessSteelinitsannealedconditionwithcarbideorceramictools.Itisnottypicallyweldedasitis
pronetoairhardening.Ifweldingisnecessary,theworkpiecemustbepreheatedto500°F.After
welding,treatthemetalfor6hoursatatemperaturebetween1350°Fand1400°F.Then,toavert
cracking,thestainlesssteelmustbefurnacecooledslowly.Stainlesssteelalloy440CStainless
Steelcanonlybemarginallycoldworked.Whenhotworking,themetalmustbekeptatatemperature
above1700°F.Beforebeginninghotworking,preheatthematerialto1400°Fandgraduallyincrease
toatemperaturebetween1900°Fand2200°F.Afterhotworking,cooltheworkpieceslowlyuntilit
reachesroomtemperatureandthenfullyannealit
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