What Are Popular Uses of Aluminum Alloys

With good properties like strong weather resistance, excellent corrosion resistance, good sealing performance, more and more possibilities of aluminum alloys are being discovered like aluminum alloy roof, aluminum boats, aluminum bottle caps. Learn more.

1. WhatArePopularUsesofAluminumAlloys
Abstract:Withgoodpropertieslikestrongweatherresistance,excellentcorrosionresistance,
goodsealingperformance,moreandmorepossibilitiesofaluminumalloysarebeingdiscovered
likealuminumalloyroof,aluminumboats,aluminumbottlecaps.Learnmore.
AluminiumCoilforRoof
Whenchoosingaroofingmaterial,
manyprioritizedurabilityanda
premiumappearance,andthe
aluminumroofingcoilperfectlymeets
bothoftheserequirements.Duetoits
uniquematerialadvantages,itis
becomingapopularchoicefor
residentialandcommercialroofing.
Features
Superiorweatherresistance
Aluminumalloysoffersexcellent
corrosionresistanceandwithstands
theeffectsofrain,UVrays,highandlowtemperatures,andotherharshweather.Evenwith
prolongedoutdoorexposure,theyareresistanttorust,cracking,andaging,offeringaservicelife
of20-30years.Thissignificantlyreducesthefrequencyandcostofroofmaintenance,making
themparticularlysuitableforareaswithhightemperatures,rain,orsignificanttemperature
fluctuations.

2. Lightweightdesign
Comparedtotraditionaltileandslateroofingmaterials,thecolorcoatedaluminumcoillighter,
weighingonly2-5kgpersquaremeter,significantlylessthanthe20-30kgpersquaremeterof
ceramictiles.Thislightweightfeaturereducestheload-bearingrequirementsoftheroof,making
itsuitablenotonlyfornewconstructionbutalsoforrenovationsofolderroofs,avoiding
structuraldamagecausedbyexcessiveweight.
Excellentwaterproofing
Aluminiumroofingcoilcanbelaidseamlesslythroughoverlappingorweldingprocesses,
effectivelyavoidingtheleakscommonatthejointsoftraditionaltiles.Furthermore,the
aluminumcoil'sspecialsurfacetreatmentquicklychannelsrainwater,reducingerosioncausedby
accumulatedwater.It'sparticularlysuitableforflatorgentlyslopingroofs.
Easyandflexibleinstallation
Theycanbeflexiblycutandlaidtofitthecurvatureandanglesoftheroof.Theycaneasilyadapt
torectangularroofs,curvedroofs,andcomplexroofswithskylightsandexhaustducts.
Furthermore,theinstallationprocessisrelativelysimple,requiringnocomplextools,shortening
theconstructionperiodandreducinglaborcosts.
Coatings
Fluorocarboncoating(PVDFcoating)
Fluorocarboncoatingisoneofthemostweather-resistantcoatingscurrentlyavailable,effectively
resistingUVradiation,acidrain,andhigh-temperatureaging.Thistypeofcoatingiscommonly
usedincommercialbuildings(suchasshoppingmallsandofficebuildings)orincoastalareas
whereweatherresistanceiscritical,andcanwithstandhumid,salt-fog-richenvironments.

3. Polyestercoating(PEcoating)
Polyestercoatingoffersamorecost-effectivesolution,withexcellentimpactresistanceand
flexibility,adaptingtoevenminorroofdeformationswithoutpeeling.Whileslightlyless
weather-resistantthanfluorocarboncoating,itcanstillprovide15-20yearsofserviceininland
areaswithrelativelymildclimates.Itswideselectionofcolorsmakesitsuitablefor
cost-consciousresidentialusers.
Specifications
Width:Themostcommonwidthsare1.2mand1.5m,thoughcustomoptionsareavailable.
Widerwidthsreducejointsduringinstallation,resultinginimprovedwaterproofingandsuitable
forlargeroofs.Smallerwidthsaremoresuitableforcomplexroofswithnumerouscorners,
allowingformoreflexiblecutting.
Length:Typicallyitisavailableinrollsof10mor20m,customlengthscanbetailoredtosuitthe
roofarea,minimizingmaterialwaste.
Thickness:Thebasematerialisgenerally0.3-0.8mmthick,whilethecoatingisapproximately
20-50μmthick.
Aluminumalloyboats
Withtheincreasingdemandforwatertransportation,leisureandentertainment,andmaritime
lawenforcement,thematerialsusedinshipsareconstantlyevolving.Marinealuminumalloy,
withitsadvantagesoflightweight,corrosionresistance,andhighstrength,hasbecomethe
preferredmaterialformanytypesofvessels.

4. Sightseeingboats
Sightseeingboatsarecommonpassengervehiclesinscenicareas,lakes,andoffshoreareas.Key
requirementsincludespaciousness,comfort,stability,andresistancetowatervaporandsalt
corrosion.Whethercarryingtouriststoadmirethesceneryoflakesandmountainsorenjoythe
coastalbreeze,sightseeingboatsrequireamplespaceforpassengerswhilemaintaininglow
energyconsumptiontocontroloperatingcosts.
Materialaw5083istheperfectmaterialforsightseeingboats.Itsexceptionalresistanceto
seawatercorrosionreducesrustandaging,extendingtheboat'sservicelifeevenwhenoperating
inareaswherefreshwaterandsaltwatermeet.Furthermore,5083aluminumalloy'sexcellent
weldingpropertiesallowshipyardstoeasilycreatehullswithspaciousviewingareas,even
equippedwithglasscurtainwalls,tomeetvisitors'needsforpanoramicviews.Moreimportantly,
it'ssignificantlylighterthantraditionalsteel,reducingtheoverallweightofsightseeingboatsand
fuelconsumption,allowingthemtomaneuvernimblyinconfinedwatersandenhancingthe
sailingexperience.

5. Fishingboats
Designedspecificallyforfishing,fishingboatsarecompactyetflexibleandpractical.Theyrequire
spaceforfishinggearandcatch,andsomealsofeatureremovableawnings.Whetherforleisure
fishingininlandlakesoroffshore,aboatmustbeabletowithstandtheweightofthegearand
withstandminorimpactswhendocked.
Thisiswhere5086aluminumalloybecomesthepreferredchoice.Comparedto5083aluminum
alloy,5086aluminumplateoffersgreaterstrength,providingastablesupportforfishingrodsand
fishingboxes.Italsoresistsdeformationevenfromoccasionalminorcontactwithdocksandreefs.
Italsooffersexcellentcorrosionresistance,allowingthehulltoremainintactdespiteprolonged
contactwithlakeandseawater.Furthermore,5086aluminumalloy'sexcellentformabilityallows
shipbuilderstodesignrodholdersonthesideoftheboatoraplatformatthesternfor
convenientcatchcleaning,makingfishingmoreworry-free.
Assaultboats
Speedboatsareknownfortheirspeedandflexibility,andarewidelyusedinwaterrescue,
recreationalracing,andshort-distanceemergencytransport.Theirhullsaretypicallylongand
narrow,requiringextremelightweightingtoachievehighspeedswhilealsoprovidingsufficient
impactresistancetonavigatecomplexwaterssuchasshallowsandreefs.
5083aluminumplateisperfectlysuitedtotheneedsofassaultboats.Itsdensityisonlyabout
one-thirdthatofsteel,significantlyreducingtheboat'sweight.Whenpairedwitha
high-poweredengine,iteasilyachieveshighspeeds—criticalinrescuescenarios,allowing
rescuerstoquicklyreachthescene.Furthermore,5083aluminumalloyexhibitsexcellent
toughness,resistingbreakageordeformationduringminorimpacts,ensuringcrewsafety.Its
corrosionresistancealsoreducesmaintenancerequirementsforbothfreshwaterandsaltwater
use,reducingoperationalcosts.
Patrolboats
Patrolboatsareprimarilyusedformaritimelawenforcement,offshoresecurity,andwater

6. patrols.Theyoperateatseaorincomplexwatersforextendedperiods,placingextremelyhigh
demandsontheboat'sdurability,stability,andload-bearingcapacity.Carryingradar,
communicationsequipment,andlawenforcementtools,theboat'shullmustbeableto
withstandtheweightofthesedeviceswhileremainingstableinroughseas,ensuringthesafety
oflawenforcementpersonnelandthesmoothconductoftheirwork.
5086aluminumsheetisanidealchoiceforpatrolboats.Itshighertensilestrengththan5083
aluminumalloyallowsittostablycarryavarietyoflawenforcementequipment.Itshullalso
providesastrongerstructure,reducingrollingandimprovingstabilitywhennavigatingroughseas.
Furthermore,5086aluminumalloyishighlyresistanttoseawatercorrosion,makingitareliable
choiceevenforpatrolboatsoperatinglongdistances.Thisextendstheboat'sservicelife,reduces
maintenancecosts,andenhancespatrolefficiency.
Aluminumbottlecapmaterial
Inourdailylives,frombottledbeveragestoskincareproductstocondiments,bottlecapsare
crucialcomponentsthatprotectthecontentsandenhancetheuserexperience.Aluminumbottle
capmaterial,duetoitslightweight,corrosion-resistant,easy-to-process,andrecyclable
properties,hasbecomethemainstreamchoiceforbottlecapmanufacturing.
Coreprocess
Whetherit's5052or5182aluminumcoil,theybotharecoldrolledaluminumcoil.Thisisbecause
bottlecapsrequireextremelyhighmaterialprecisionandsurfacequality:
Thecoldrollingprocessallowsthealuminumcoiltomaintainathicknesstolerancewithin
±0.01mm,ensuringuniformdimensionsforeachbottlecapduringsubsequentstamping.
Thecold-rolledaluminumcoil'ssurfaceissmoothandscale-free,eliminatingtheneedfor
complexpolishingtomeetthedesiredappearancerequirementsforbottlecaps(e.g.,printing,
lamination,orothersubsequentprocessing).
Moreimportantly,coldrollingoptimizesthealuminumcoil'smechanicalproperties,ensuring

7. bothductilityandstrength,thuspreventingcrackinganddeformationduringstamping.
Incontrast,hot-rolledaluminumcoilhasawidethicknesstoleranceandaroughsurface,making
itmoresuitableforthickplateprocessingandcompletelyinadequatefortheprecision
manufacturingrequirementsofbottlecaps.
5052aluminumcoil
Thecoldrolledaluminum5052stripisanAl-Mgalloywithamagnesiumcontentof
approximately2.5%.Itsgreateststrengthsareitscorrosionresistanceandductility,alongwithits
relativelyaffordablecost.It'ssuitableforbottlecapsthatdon'trequirehighpressure.Typical
applicationsinclude:
Condimentbottlecaps:There
aresoysauce,vinegar,and
cookingwinebottlecaps.These
capsaresubjecttolong-term
contactwithacidicoralkaline
liquids,andthecorrosion
resistanceof5052prevents
corrosionofthealuminumand
contaminationofthecontents.
Skincare/dailychemicalbottlecaps:Forexample,screwcapsorsnapcapsforlotionandserum
bottles.Thesecapshavehighaestheticrequirements(requiringbrandlogoprintingormatteor
glossyfinishes).Thesmoothsurfaceofcold-rolled5052isperfectlysuitedforcoating,andits
excellentductilityallowsforthestampingofcomplextextureddesigns.
Non-carbonatedbeveragebottlecaps:Forexample,thoseusedforbottledmineralwater,juice,
andtea.Thesebeveragesdonotexperienceinternalpressure,andthestrengthof5052is
sufficientforsealing.Itslightweightdesignreducestheoverallpackagingweightandlogistics
costs.

8. 5182aluminumcoil
5182aluminumcoilisanAl-Mgalloy,butwithahighermagnesiumcontent(approximately4.5%)
andasmallamountofmanganeseadded,resultingingreaterstrengthandfatigueresistance.Itis
thepreferredchoiceforhigh-pressureapplicationsandisprimarilysuitablefor:
Carbonatedbeveragebottlecaps:suchascrownsorscrewcapsforcola,sprite,andsparkling
water.Carbonatedbeveragesexperiencepressuresof3-5atmospheres.Ordinarymaterialsare
pronetodeformationandleakageduetopressure.However,5182alloy,withatensilestrength
exceeding300MPa,canwithstandinternalpressureforextendedperiods,ensuringastableseal.
Beerbottlecaps:Beernotonlyhasinternalpressurebutalsoneedstopreventoxygenfrom
entering,whichcanaffectitstaste.5182'shighstrength,combinedwithaprecisioncold-rolling
process,ensuresatightfitbetweenthecapandthebottleopeningwhilealsowithstandingthe
hightemperaturesofpasteurization(60-70°C)withoutmaterialdegradation.
High-pressurechemicalsamplebottlecaps:Someindustrialsmall-dosereagents(suchas
corrosivesolvents)requirehigh-pressuresealing.Thecorrosionresistanceandstrengthof5182
canmeetthesafetyneedsofsuchspecialscenarios.
Aluminumbottlecaps
Whenyouunscrewabeverageorwinebottle,youmightnothavenoticedthesizedifferences
amongaluminumbottlecaps—buttheseseemingly
inconspicuouscapsareactuallypreciselydesigned
basedontheproduct'sneeds.Fromcommon
bottledbeveragestopharmaceuticalsanddaily
necessities,aluminumbottlecapscomeinawide
rangeofsizes.
Beveragealuminumbottlecaps
Beveragesaretheprimaryapplicationfor

9. aluminumbottlecaps.Fromcarbonatedbeveragestobottledwater,sizesaredesignedtoensure
atightsealandeaseofdrinking,withcommonsizesrangingfrom28mmto32mmouter
diameter.
Carbonatedbeverage/juicebottles:Duetothepressureinsidethesebottles,aluminumcaps
requireastrongerseal.Themostcommonouterdiametersare28mmand30mm,withheights
rangingfrom12-15mm.Forexample,colaandorangejuice,whichweoftendrink,oftenuse
aluminumcapswithanouterdiameterof28mmandaninnerdiameterofapproximately
26-27mm(matchingtheouterdiameterofthebottleopening).Theedgesaredesignedwith
anti-slipgroovesforeasyunscrewing.
Bottledwater/tea:Bottledwaterpursuesportability,soaluminumcapsaresmaller,primarily
withanouterdiameterof28mmandaheightof10-12mm.Somesmallerbottles(suchas350ml
portablebottles)usealuminumcapswithanouterdiameterof26mmtoaccommodate
narrower-mouthedbottles.
Aluminumliquorbottlecaps
Thesizeofaluminumliquorcapsiscloselyrelatedtothebottlediameterandsealing
requirements.Specificationsforliquor,beer,andredwine(someofwhichusealuminumcaps)
varysignificantly:
Beerbottle(crowncap):Thisisthemostrecognizablealuminumcapforalcoholicbeverages.Its
dimensionsarehighlyfixed,withanindustry-standardouterdiameterof26mmandaheightof
approximately8-10mm.Itfeaturesaraised"crownpattern"onthetopandrequiresabottle
openertoopen.Itfitsstandardbeerbottleopenings(withaninnerdiameterofapproximately
24mm).
Whitewinebottlecaps:Whitewinebottleshavelargerdiametersthanbeerbottles,so
aluminumcapsarelargerinsize.Commonchoicesare30mmor32mmendcap,andheightsare
15-18mm.Somehigh-endwhitewinebottlesfeaturea"double-layeraluminumcap"(a
decorativeouterlayerandaninnersealinglayer),withatotalheightofupto20mm,ensuringa
tightsealwhileenhancingthequality.
Wine/ciderbottles:Mostwinesusecorks,butbudgetwinesoftenusealuminumcaps.These

10. capstypicallyhaveanouterdiameterof29mmor30mmandaheightof12-14mm.Arubberseal
isaddedtotheinnerwalltopreventevaporation.
Pharmaceutical&dailychemicalaluminumbottlecaps
Pharmaceutical(Oralliquid/smallmedicinalbottles):Oralliquidbottles(e.g.,10ml,15ml)
typicallyhavealuminumcapswithanouterdiameterof20mmor22mmandaheightof8-10mm.
Somefeaturea"tear-off"designforeasyopening.Smallointment/dropperbottleshaveeven
smalleraluminumcaps,withouterdiametersofonly15mmor18mmandheightsof6-8mm.
Theymusthaveafood-gradegasketontheinnerwalltomeetmedicalandhygienestandards.
Dailychemical(sample/essencebottles):Skincaresamples(e.g.,5mlserum,10mllotion)often
usealuminumcaps.Thesecapsaresimilarinsizetopharmaceuticalvials,primarilywithouter
diametersof15mmor18mmandheightsof7-9mm.Somemayfeatureamattefinishorgold
plating,balancingpracticalitywithaesthetics.
Keyparameterstochoosearightbottlecap
Whenselectinganaluminumcap,considermorethanjusttheouterdiameter.Threekey
parametersshouldalsobeconsidered:
InnerDiameter:Itmustmatchtheouterdiameterofthebottleopening(forexample,ifthe
bottleopeningouterdiameteris28mm,theinnerdiameterofthealuminumcapshouldbe
28.2-28.5mmtoensureatightfit).
Height:Toohighwillmakeunscrewingdifficult,whiletoolowwillresultininsufficientsealing
area.Designsaretypicallybasedontheheightofthebottleopening(abottleopeningheightof
10mmandanaluminumcapheightof12-14mmareideal).
Tolerance:Forstandardbeveragealuminumcaps,thetoleranceis±0.3mm.Forpharmaceutical
caps,thetolerancemustbewithin±0.1mmtopreventleakageduetodimensionaldeviation.