40MnB價格40MnB價格40MnB價格40MnB價格40MnB價格40MnB價格40MnB價格40MnB價格
上海協廣電話:021-37683188  傳真:021-37683199 聯系人;金小姐
40MnB (GB/T 3077-1999)  

     ●特性及適用范圍:                                                      
     具有較高的強度、硬度、耐磨性及良好的韌性，是一種取代40Cr鋼較成功的新鋼種
 。用作汽車上的轉向臂、轉向節、轉向軸、半軸、蝸桿、花鍵軸、剎車調整臂等，也可
 代替40Cr鋼制造較大截面的零件。                                             
                                                                           
     ●化學成份:                                                            
     碳 C : 0.37～0.44                                                      
     硅 Si: 0.17～0.37                                                      
     錳 Mn: 1.10～1.40                                                      
     硫 S : 允許殘余含量≤0.35                                              
     磷 P : 允許殘余含量≤0.35                                              
     鉻 Cr: 允許殘余含量≤0.30                                              
     鎳 Ni: 允許殘余含量≤0.30                                              
     銅 Cu: 允許殘余含量≤0.30                                              
     硼 B : 0.0005～0.0035                                                  
                                                                           
     ●力學性能:                                                            
     抗拉強度      σb     (MPa):≥980(100)                                 
     屈服強度      σs     (MPa):≥785(80)                                  
     伸長率        δ5      (％):≥10                                       
     斷面收縮率    ψ       (％):≥45                                       
     沖擊功        Akv       (J):≥47                                       
     沖擊韌性值    αkv  (J/cm2):≥59(6)                                    
     硬度                       :≤207HB                                    
     試樣尺寸: 試樣毛坯尺寸為25mm                                           
                                                                           
     ●熱處理規范及金相組織:                                                
     熱處理規范: 淬火850℃,油冷；回火500℃,水冷、油冷。                     
                                                                           
     ●交貨狀態:                                                            
     以熱處理（正火、退火或高溫回火）或不熱處理狀態交貨，交貨狀態應在合同中注
 明。  
40MnB價格40MnB價格40MnB價格40MnB價格40MnB價格40MnB價格40MnB價格40MnB價格