IMPAX SUPREME - Uddeholm

IMPAX SUPREMEGeneralIMPAX SUPREME is a premium-quality vacuumdegassedCr-Ni-Mo-alloyed steel which is suppliedin the hardened and tempered condition, offeringthe following benefits:■ No hardening risks■ No hardening costs■ Time saving, e.g. no waiting for heat treatment■ Lower tool cost (e.g. no distortion to rectify)■ Modifications easily carried out■ Can be subsequently nitrided to increase surfacewear resistance or locally flame hardened toreduce surface damage.IMPAX SUPREME is manufactured to consistentlyhigh quality standards with a very low sulphurcontent, giving a steel with the following characteristics:■ Good polishing and photo-etching properties■ Good machinability■ High purity and good homogeneity■ Uniform hardness.Note: IMPAX SUPREME is 100% ultrasonic tested.Heavier sections are supplied premachined whichoffers the following advantages compared with unmachinedmaterial:• Saving of weight• Non-decarburized surface• Exact nominal size (plus tolerance)• Less machining• Absence of scale minimizes machine andtool wear.Applications• Injection moulds for thermoplastics• Extrusion dies for thermoplastics• Blow moulds• Forming tools, press-brake dies (possibly flamehardened or nitrided)• Aluminium die casting prototype dies• Zinc die casting dies• Long run die shoes• Structural components, shafts.PropertiesPHYSICAL DATAHardened and tempered to 310 HB.Temperature 20°C 200°C(68°F) (390°F)Density,kg/m 3 7 800 7 750lbs/in 3 0,282 0,280Coefficient of thermalexpansionper °C from 20° – 12,7 x 10 -6per °F from 68°F – 7,0 x 10 -6Thermal conductivityW/m °C 29,0 30Btu in/ft 2 h °F 202 205Modulus of elasticityN/mm 2 205 000 200 000tsi 13 280 12 960psi 29,7 x 10 6 29,0 x 10 6Specific heat capacityJ/kg °C 460 –Btu/lb°F 0,110 –Approx.analysis %Standardspec.DeliveryconditionColourcodeC Si Mn Cr Ni Mo S0,37 0,3 1,4 2,0 1,0 0,2