During the last fifty years, engineers have demanded steels with higher  and higher tensile strength, together with adequate ductility. This has  been particularly so where lightness is desirable, as in the automobile  and aircraft industries. The principal alloying elements added to steel  in widely varying amounts either singly or in complex mixtures are  nickel, chromium, manganese, molybdenum, vanadium, silicon and cobalt.  In regard to alloying elements, these steels are known as low-alloyed  steels and alloyed steels. These steels are used as case hardening  steels, quenched&tempered steels, free-cutting steels, nitriding  steels, surface hardening steels, spring steels and high-strength steels  
                   
                   
              Alloyed Steels 
               
              Alloyed steels contain carbon and a higher amount of alloying  elements such as nickel, chromium, manganese, cobalt, niobium and  vanadium. These elements are added to improve mechanical properties,  ductility and other steel service properties. 
               
              
                
                  
                    |  Brand Name  | 
                     Ravne No.  | 
                     Mat. No.  | 
                     DIN  | 
                     AISI  | 
                   
                  
                    | CT781   | 
                     781  | 
                     1.6587  | 
                     17CrNiMo6  | 
                     4820  | 
                   
                  
                    | ECN35  | 
                     745  | 
                     1.5752  | 
                     14NiCr14  | 
                     3310  | 
                   
                  
                    | PT181  | 
                     181  | 
                     1.7380  | 
                     10CrMo9-10  | 
                     A182 Grade F22  | 
                   
                  
                    | PO795  | 
                     795  | 
                     1.7734  | 
                     -  | 
                     -  | 
                   
                  
                    | VCMO140  | 
                     724  | 
                     1.7225  | 
                     42CrMo4  | 
                     4142  | 
                   
                  
                    | VCMO150  | 
                     725  | 
                     1.7228  | 
                     50CrMo4  | 
                     4150  | 
                   
                
               
               
              For other alloyed steels from our production program please visit Metal Ravne, d. o. o. 
               
               
              Low Alloyed Steels  
               
              Low-alloyed steels contain carbon and alloying elements such as nickel,  chromium in molybdenum. Their amount is generally low, up to 2%.  Primary function of these alloying elements are increasing  hardenability in conjuction with optimizing mechanical propertis and  ductility of these steels. 
               
              
                
                  
                    |  Brand Name  | 
                     Ravne No.  | 
                     Mat. No.  | 
                     DIN  | 
                     AISI  | 
                   
                  
                    | CK45  | 
                     620  | 
                     1.1191  | 
                     Ck45  | 
                     1045  | 
                   
                  
                    | ST52-3  | 
                     562  | 
                     1.0570  | 
                     St52-3N  | 
                     -  | 
                   
                
               
               
              For other low-alloyed steels from our production program please visit Metal Ravne, d. o. o. 
               
               
               Product Delivery Range |