Various Steel Bar Delivery Condition

Various Steel Bar Delivery Condition

During steel bar purchasing, you may meet some letters which represent abbreviations of various delivery condition. We introduce some of them for you here:

+A ( 42CrMo4+A, 41Cr4+A, C45+A, 18CrMo4+A, 18CrNiMo6+A, 34CrNiMo6+A steel bar) , Soft Annealed

+AC ( 42CrMo4+AC, 41Cr4+AC, C45+AC, 18CrMo4+AC, 18CrNiMo6+AC, 34CrNiMo6+AC steel bar, 52100+AC) , Annealed to achieve spheroidization of the carbides

+AR ( 42CrMo4+AR, 41Cr4+AR, C45+AR, 18CrMo4+AR, 18CrNiMo6+AR, 34CrNiMo6+AR steel bar, 52100+AR) As rolled
+AT( 42CrMo4+AT, 41Cr4+AT, C45+AT, 18CrMo4+AT, 18CrNiMo6+AT, 34CrNiMo6+AT steel bar, 52100+AT) Solution annealed

+C( 42CrMo4+C, 41Cr4+C, C45+C, 18CrMo4+C, 18CrNiMo6+C, 34CrNiMo6+C steel bar, 52100+C) Cold drawn / hard
+CR Cold rolled

+FP Treated to ferrite-pearlite structure and hardness range
+I Isothermal annealing
+LC Cold drawn / soft
+M Thermo mechanical rolling
+N( 42CrMo4+N, 41Cr4+N, C45+N, 18CrMo4+N, 18CrNiMo6+N, 34CrNiMo6+N steel bar) Normalized
+NT Normalized and tempered
+P Precipitation hardened
+PE (42CrMo4+PE, 41Cr4+PE, C45+PE, 18CrMo4+PE, 18CrNiMo6+PE, 34CrNiMo6+PE steel bar) Peeled
+QA Air quenched and tempered
+QL Liquid quenched and tempered
+QT (42CrMo4+QT, 42CrMoS4+QT, 41Cr4+QT, C45+QT, 18CrMo4+QT, 18CrNiMo6+QT, 34CrNiMo6+QT steel bar) Quenched and tempered
+S Treated to improve shearability
+SH(42CrMo4+SH, 42CrMoS4+SH, 41Cr4+SH, C45+SH, 18CrMo4+SH, 18CrNiMo6+SH, 34CrNiMo6+SH steel bar) As rolled and turned
+SR Cold drawn and stress relieved
+T Tempered
+TH Treated to hardness range
+WW Warm worked
+U Untreated