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UDDEHOLMELMAX SUPERCLEAN
UDDEHOLMS ABNo part of this publication may be reproduced or transmitted for commercial purposeswithout permission of the copyright holder.This information is based on our present state of knowledge and is intended to provide generalnotes on our products and their uses. It should not therefore be construed as a warranty ofspecific properties of the products described or a warranty for fitness for a particular purpose.Classified according to EU Directive 1999/45/ECFor further information see our “Material Safety Data Sheets”.Edition 7, revised 02.2016, not printedSS-EN ISO 9001SS-EN ISO 14001
UDDEHOLM ELMAX SUPERCLEANGeneralPropertiesUddeholm Elmax SuperClean is a high chromium-vanadium-molybdenum-alloyed steelwith the following characteristics: High wear resistance High compressive strength Corrosion resistant Very good dimensional stabilityPhysical dataHigh wear resistance is normally connected tolow corrosion resistance and vice versa. InUddeholm Elmax SuperClean it has howeverbeen able to achieve this unique combinationof properties by a powder-metallurgy-basedproduction.Uddeholm Elmax SuperClean offers apossibility to make long-life, low maintenancemoulds for the best overall moulding economy.Typicalanalysis %C1,7Si0,8Mn0,3Cr18,0Mo1,0DeliveryconditionSoft annealed approx. 280 BrinellColour codeBlue/blackV3,0ApplicationsNew types of engineering plastics, with highfiller contents, place greater demands on thetooling material, in terms of wear resistanceand corrosion resistance. Uddeholm ElmaxSuperClean has been specially developed forhigh-tech applications. These include productswithin the electronic industry such as connectors, plugs, switches, resistors, integratedcircuits, etc. Uddeholm Elmax SuperClean canalso be used in the food processing industryand for industrial and custom knives, where acombination of corrosion resistance and wearresistance is required.Hardened and tempered to 58 Rockwell C.TemperatureDensitykg/m3lbs/in.20 C(68 F)200 C(392 F)400 C(752 F)7 6000,2757 5600,2737 5000,271Modulus of elasticityN/mm2psi230 00033,4 x 106210 000200 00030,5 x 106 29,0 x 106Coefficient ofthermal expansionper C from 20 Cper F from 68 F––10,6 x 10-6 11,4 x 10-66,0 x 10-6 6,4 x 10-6Thermal conductivity*W/m CBtu in/ft2 h F––15104211464600,110––––Specific heatJ/kg CBtu/lb F* Thermal conductivity is difficult to measure. The scatter maybe as high as 15%Compressive strengthThe figures are to be considered approximate.Hardness60 HRC55 HRC50 HRCCompressivestrength RmN/mm2tsipsi3 000195435 0002 700175390 0002 300150335 000Yield pointRp0,2N/mm2tsipsi2 300150335 0002 150140310 0001 800120260 000Corrosion resistanceMoulds made from Uddeholm ElmaxSuperClean will have good resistance tocorrosion when moulding corrosive plasticsunder normal production conditions.Uddeholm Elmax SuperClean usedin Kershaw's knife Speedform,awarded “Blade Magazine 2009American-Made Knife Of TheYear ”.3
UDDEHOLM ELMAX SUPERCLEANHeat treatmentTemperingChoose the tempering temperature accordingto the hardness required by reference to thetempering graph. Temper twice with intermediate cooling to room temperature, thepreferred tempering temperature is 250 C(480 F) or higher. In exceptional cases, aminimum tempering temperature of 180 C(350 F) can be used for small simple insertsand parts where toughness is of less importance. Holding time at tempering temperatureminimum 2 hours.Soft annealingProtect the steel and heat through to 980 C(1800 F), holding time 2h. Then cool in furnace20 C (40 F)/h to 850 C (1560 F). Holdingtime 10h. Cool slowly to 750 C (1380 F).Then freely in air.Stress-relievingAfter rough machining the tool should beheated through to 650 C (1200 F), holdingtime 2 hours. Cool slowly to 500 C (930 F)then freely in air.TEMPERING GRAPHHardness, HRCHardeningHolding*timeminutes F10501080192019801050 C(1920 F)46Hardnessbeforetempering3030Austenitizing temp.585450Temperature1100 C (2010 F)62Preheating temperature: 600–850 C (1110–1560 F).Austenitizing temperature: 1050–1100 C (1920–2010 F), normally 1080 C (1980 F). CRetained austenite %66423860 HRC61 HRC343064Retained austenite1050 C (1920 F)100210* Holding time time at austenitizing temperature after thetool is fully heated throughProtect the part against decarburization andoxidation during hardening.2200 300 400 500 600 700 800 C390 570 750 930 1110 1290 1470 FTempering temperature 2 x 2hAbove tempering curves are obtained after heat treatment ofsamples with a size of 15 x 15 x 40 mm, cooling in forced air.Lower hardness can be expected after heat treatment oftools and dies due to factors like actual tool size and heattreatment parameters.CCT-GRAPHAustenitizing temperature 1050 C (1920 F). Holding time 30 minutes. C F2000 1100Austenitizing temperature 1050 CHolding time 30 min.1800 100016001400Ac1 960 C900A cs 890 C800Cooling Hardness T800–500CurveHV 66563055421030636020951000800400Bainite600300 M s400200200100Mf111010014321 0005610 000101001 00010.241.5100 000101090600SecondsMinutes100 HoursAir cooling ofbars, Ø mm
UDDEHOLM ELMAX SUPERCLEANQuenching media1–3 hours treatment results in an increasedhardness of about 1–3 HRC. Forced air/gas Fluidized bed or salt bath 200–550 C(390–1020 F), then cool in airNote: Avoid intricate shapes as there is a risk ofcracking.Note: In order to obtain optimum properties,the cooling rate should be as fast as is concomitant with acceptable distortion. Temperimmediately the tool reaches 50–70 C (120–160 F).Dimensional changesduring heat treatmentMachiningrecommendationsThe machining recommendations below are tobe considered as guiding values which must beadapted to existing local conditions.TurningILLUSTRATION OF THE EFFECT FROM AUSTENITIZING TEMPERATURE AND SUBZERO COOLINGCutting dataparametersThe test has been performed on sample size:40 x 40 x 40 mm (1,6 x 1,6 x 1,6 in.).%0,1500,125AfterhardeningFeed 50 C (1920 F)30 min1050 C (1920 F)30 ering: 230 C (440 F) 2h 2hRough turningCuttingspeed (vc)m/min.f.p.m.After hardeningand tempering0,100Turning 600,2–0,40,008–0,016Depthof cut (ap)mminch-60 C (-75 F)230 C (440 F) 2h 2h70–120230–395Turning withhigh speedsteelFine turning Fine ,008 –30,02–0,12K20, P10–P20C2, C7–C6Coated*carbideK15, P10C2, C7Coated*carbide–* Use a wear resistant Al2O3 coated carbide gradeSub-zero treatmentDrillingSub-zero treatment falls into the broad categories of cold treatment and cryogenic treatment.Parts requiring high dimensional stabilityshould be sub-zero treated, otherwise volumechanges may arise.Uddeholm Elmax SuperClean is commonlysub-zero treated between -150 C (-240 F) and-196 C (320 F) (cryo treatment), althoughoccasionally -40 C (-40 F) to -80 C (-112 F)(cold treatment) are used due to constraints ofthe sub-zero medium and equipment available.The first sub-zero treatment should becarried out directly after hardening and beforeany tempering without delay. When maximumdimensional stability is required further subzero treatments may be necessary betweenthe tempering operations. In this case it isimportant to always end with a tempering, asthe last operation.HIGH SPEED STEEL TWIST DRILLSDrill diametermminchCutting speed (vc)m/min.f.p.m.–5–3/165–10 3/16–3/810–15 3/8–5/815–20 3–39*33–39*33–39*mm/rFeed 0,014* For coated HSS drills vC 18–20 m/min. (60–65 f.p.m.)CARBIDE DRILLSType of drillCutting p1)Cuttingspeed 253)0,004–0,013)0,15–0,254)0,006–0,014)Feed (f)mm/ri.p.r.1)Drill with replaceable or brazed carbide tipFeed rate for drill diameter 20–40 mm (0.8”–1.6”)3)Feed rate for drill diameter 5–20 mm (0.2”–0.8”)4)Feed rate for drill diameter 10–20 mm (0.4”–0.8”)2)5
UDDEHOLM ELMAX SUPERCLEANMillingGrindingFACE AND SQUARE SHOULDER MILLINGA general grinding wheel recommendation isgiven below. More information can be found inthe Uddeholm brochure “Grinding of ToolSteel”.Cutting data parametersCutting speed (vC)m/min.f.p.m.Milling with carbideRough millingFine milling80–110265–360110–140360–460Soft annealedconditionHardenedconditionFace grindingstraight wheelA 46 HVB 151 R50 B31)A 46 GVFace grindingsegmentsCylindrical grindingA36 GVA 60 KVInternal grindingA 60 JVProfile grindingA 100 IVA 46 GVB 151 R50 B31)A 60 JVB 151 R75 B31)A 60 IVB 126 R100 B61)A 100 JVType of grindingFeed (fZ)mm/toothin/toothDepth of cut (ap)mminCarbide 04–0,0082–40,08–0,16–20,08K20, P20C2, C6Coated*carbideK15, P10C2, C7Coated*carbide* Use a wear resistant Al2O3 coated carbide grade1)If possible use CBN wheels for this applicationEND MILLINGType of end millCutting dataparametersCuttingspeed eindexableinsert80–110265–360High speedsteel5–81)16–261)Feed 0in/tooth0,0003–0,0082) 0,002–0,0082) 0,0003–0,0122)CarbidedesignationISOUS–K15, P10–P20C2, ningIf EDM’ing (“spark-erosion”) is performed inthe hardened and tempered condition, the toolshould then be given an additional temper atabout 20 C (50 F) below the previous tempering temperature.Propertycomparison chart1)For coated HSS end mill vc 14–16 m/min. (46–52 f.p.m.)Depending on radial depth of cut and cutter diameter3)Use a wear resistant Al2O3 coated carbide grade2)Uddeholmsteel tabilityELMAXSUPERCLEANRIGORSTAVAX ESRFurther informationPlease contact your local Uddeholm officefor further information on the selection, heattreatment, application and availability ofUddeholm tool steel.Different parts produced in tools made fromUddeholm Elmax SuperClean.6
Network of excellenceUddeholm is present on every continent. This ensures youhigh-quality Swedish tool steel and local support wherever youare. We secure our position as the world’s leading supplier oftooling materials.www.uddeholm.com
UDDEHOLM 1507 / R1601Uddeholmis the world’s leading supplier of tooling materials. Thisis a position we have reached by improving our customers’ everydaybusiness. Long tradition combined with research and product development equips Uddeholm to solve any tooling problem that may arise.It is a challenging process, but the goal is clear – to be your number onepartner and tool steel provider.Our presence on every continent guarantees you the same high qualitywherever you are. We secure our position as the world’s leadingsupplier of tooling materials. We act worldwide. For us it is all a matterof trust – in long-term partnerships as well as in developing new products.For more information, please visit www.uddeholm.com
UDDEHOLM ELMAX SUPERCLEAN 6 Type of end mill Carbide Cutting data Solid indexable High speed parameters carbide insert steel Cutting speed (v C) m/min.
