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1、ExampleFidur23/250E23UM250CKNPTZ123451Shortsymbolformanualarcwelding2ShortsymbolAlloygroupandapplication1Unalloyedupto0.4%Corlow-alloyedupto0.4%Canduptomax.5%alloyconstituentsCr,Mn,Mo,Niintotal;softsurfacing,e.g.fill-upwelding,bufferinglayers2Unalloyedwithmorethan0.4%Cor
2、low-alloyedwithmorethan0.4%Canduptomax.5%alloyconsitutentsCr,Mn,Mo,Niintotal;runningwheels3Alloyed,withthepropertiesofhotworkingsteel,hotworkingtools4Alloyed,withthepropertiesofhigh-speedsteel,cuttingtools,mandrels,shearblades,cutters,drillbits5Alloyedwithmorethan5%Crand
3、lowC-content(uptoapprox.0.2%C)forscale-resistant(alsoagainstsulphurousgases)andfrom12%Cr-contentcorrosion-resistantsurfacings,e.g.valveparts,plungers,furnaceparts6Alloyedwithmorethan5%CrandhigherC-content(approx.0.2-2.0%C)cuttingtools,shearblades,rollersforcoldrollingmil
4、ls7Mnaustenitewith11to18%Mnandmorethan0.5%Candupto3%Nisurfacingsonlargesurfaces,e.g.wearplates,jawplates,diggingteeth,bolts8Cr-Ni-Mn-austenitecrusherpartsformediumstress,switchtongue,rails,waterturbineparts9Cr-Ni-steel(corrosionandheatresistant)corrosionandheatresistants
5、urfacings10HighC-contentandhighCr-alloyedwithandwithoutadditionalcarbideformer,repairsonminingandsteelplantequipment,surfacingonmachinepartsintheconstructionindustryandagriculture,overburdenexcavators,sintercrushers220Co-based,Cr-W-alloyed,withorwithoutNiandMofittingsofa
6、lltpyes,valveseatsofexhaustvalvesincombustionengines,valveseatsofsteamengines,pumpshaftsandsimilarpartswhichareexposedtoheavycorrosionanderosion21Carbide-based(sintered,castorfolled)toolsandmachinepartsforworkinginstonyearth,drillsandsimilartools,pressschrewsintheceramic
7、industry22Ni-based,Cr-alloyed,Cr-B-alloyedvalves,screws,shafts,e.g.forconcretepumps23Ni-based,Mo-alloyedwithorwithoutCrhotworkingtools,contactsurfacesofvalvesinchemicalapparatuses,claddingsatworkingedgesofcuttingsfromNi-Cr-Mo-alloyswhichareusedforworkathightemperatures30
8、Cu-based,Sn-alloyedbearingshell,slides,shafts,valves,housings,snailandhelicalgearwheels,guideandrunning
