Centralloy® G 4848 - Schmidt+Clemens

Schmidt + Clemens GroupCentralloy ® G 4848material data sheetDesignation: GX40CrNiSi25-20Data Sheet for information only · February 2010, Rev. 02 · © Copyright Schmidt + Clemens GmbH + Co. KGSchmidt + Clemens GmbH + Co. KG · Edelstahlwerk Kaiserau · P.O. Box 1140 · 51779 Lindlar, Germany

Centralloy ® G 4848Mechanical Properties(only for wall thickness less than 25 mm, in the as cast condition)Tensile propertiesMinimum tensile properties at 20°C: 0.2% Yield strength: 240 MPaUltimate tensile strength: 450 MPaElongation, (l = 5d):10.0% for centricast tubes10.0% for static castings700Typical Tensile Strength and 0.2% Yield Strength vs. Temperature600500Strength, MPa400300200100Ultimate Tensile Strength0.2% Yield Strength00 100 200 300 400 500 600 700 800 900Temperature, °C100060Typical Tensile Test Elongation vs. Temperature50Elongation (l = 5d),%4030201000 100 200 300 400 500 600 700 800 900Temperature, °C10004Centralloy ® G 4848 GX40CrNiSi25-20

Carburisation Resistance4.0Increase in Carbon Content vs. Temperature after Pack Carburisationfor 260 Hours at Indicated Test Temperature3.53.0Carbon Increase, %2.52.01.51.00.50.0900 925 950 975 1000 1025 1050 1075 1100Temperature, °COxidation Resistance5.0Oxidation Weight Gain vs. Time for Different Temperatures4.54.01100°C1000°C900°CWeight gain, mg/cm²3.53.02.52.01.51.00.50.00 10 20 3040 50 60 70 80 90 100Time, hGX40CrNiSi25-20 Centralloy ® G 48485

Centralloy ® G 4848Parametric Stress Rupture Strength100101Parametric Stress RuptureAverageLower Scatter BandLMP = Larson Miller ParameterLMP = T (15.0 + log t r)/1000Where T: temperature [K] and t r: rupture time [h]Lower Scatter Band represents 95% confidence level20.5 21.5 22.5 23.5 24.5 25.5LMPInitial Stress, MPa6Centralloy ® G 4848 GX40CrNiSi25-20