合金材料 18CrNiMo76 机械特性和化学成分

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1、MaterialspecificationsheetSaarstahl-18CrNiMo7-6(17CrNiMo6)MaterialNo.:Formerbrandname:Internationalsteelgrades:1.6587MonixFBS:AFNOR:18NCD6SAE:Materialgroup:CasehardeningsteelsaccordingtoDINEN10084ChemicalCSiMnCrMoNiothercomposition:(Typicalanalysisin%)0,170,250,501,650,301,55(Pb)Appl

2、ication:Alloyedcasehardeningsteelforheavyandhighstrainedgearpartswithhighdemandsontoughnessatcoretensilestrengthof1050-1350N/mm².HotformingandForgingorhotrolling:1150-850°Cheattreatment:Normalising:850-880°C/airSoftannealing:650-700°C/furnaceCarburising:880-980°CCorehardening:830-870

3、°C/waterIntermediateannealing:630-650°CCasehardening:780-820°C/waterTempering:150-200°CMechanicalTreatedforcoldshearability,+S:max.255HBProperties:Softannealed,+A:max.229HBTreatedforstrength,+TH:179-229HBTreatedforferriteandpearlitestructureandhardnessrange,+FP:159-207HBafterhardenin

4、gandtemperingat200°C:Diameterd[mm]d<=1616

5、lingHardness[HV/HRC]Hardnessscatterband