| 1 | 
              GB /T 711-2017 | 
              
                            20, 20#
                             | 
              
                
                
                  
                    
                      | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.03 | 0.2 | 0.3 | - | 0.25 |   
                
                 | 
              - | 
            
                        
              | 2 | 
              GB  700-1988 | 
              
                            Q255A, Q255
                             | 
              
                
                
                  
                    
                      | 0.18-0.28 | 0.3 | 0.4-0.7 | 0.045 | 0.05 | 0.3 | 0.3 | - | 0.35 |   
                
                 | 
              - | 
            
                        
              | 3 | 
              GB  700-1988 | 
              
                            Q255B, Q255
                             | 
              
                
                
                  
                    
                      | 0.18-0.28 | 0.3 | 0.4-0.7 | 0.045 | 0.045 | 0.3 | 0.3 | - | 0.3 |   
                
                 | 
              - | 
            
                        
              | 4 | 
              GB /T 3524-1992 | 
              
                            Q255A
                             | 
              
                
                
                  
                    
                      | 0.18-0.28 | 0.3 | 0.4-0.7 | 0.045 | 0.05 | - | - | - | - |   
                
                 | 
              - | 
            
                        
              | 5 | 
              GB /T 3524-1992 | 
              
                            Q255B
                             | 
              
                
                
                  
                    
                      | 0.18-0.28 | 0.3 | 0.4-0.7 | 0.045 | 0.045 | - | - | - | - |   
                
                 | 
              - | 
            
                        
              | 6 | 
              ISO  630-1995(Amd1:2003) | 
              
                            E 275D, Fe 430D
                             | 
              
                
                
                
                 | 
              - | 
            
                        
              | 7 | 
              ISO  630-1995(Amd1:2003) | 
              
                            E 275C, Fe 430C
                             | 
              
                
                
                
                 | 
              - | 
            
                        
              | 8 | 
              ISO  630-1995(Amd1:2003) | 
              
              E 275B, Fe 430B               | 
              
                
                
                
                 | 
              - | 
            
                        
              | 9 | 
              ISO  630-1995(Amd1:2003) | 
              
                            E 275A, Fe 430A
                             | 
              
                
                
                
                 | 
              - | 
            
                        
              | 10 | 
              ASME  SA-1011/SA-1011M-2023 | 
              
                            SS Grade 45 [310] Type 1
                             | 
              
                
                
                  
                    
                      | 0.25 | - | 1.35 | 0.035 | 0.04 | 0.15 | 0.2 | 0.06 | 0.2 |   
                
                 | 
              - | 
            
                        
              | 11 | 
              ASME  SA-1011/SA-1011M-2023 | 
              
                            SS Grade 45 [310] Type 2
                             | 
              
                
                
                  
                    
                      | 0.02-0.08 | 0.6 | 0.3-1 | 0.03-0.07 | 0.025 | 0.15 | 0.2 | 0.06 | 0.2 |   
                
                 | 
              - | 
            
                        
              | 12 | 
              ASTM  A1011/A1011M-2018(a) | 
              
                            SS Grade 45 [310] Type 1
                             | 
              
                
                
                  
                    
                      | 0.25 | - | 1.35 | 0.035 | 0.04 | 0.15 | 0.2 | 0.06 | 0.2 |   
                
                 | 
              - | 
            
                        
              | 13 | 
              ASTM  A1011/A1011M-2018(a) | 
              
                            SS Grade 45 [310] Type 2
                             | 
              
                
                
                  
                    
                      | 0.02-0.08 | 0.6 | 0.3-1 | 0.03-0.07 | 0.025 | 0.15 | 0.2 | 0.06 | 0.2 |   
                
                 | 
              - | 
            
                        
              | 14 | 
              ASME  SA-283/SA-283M-2003(R2007) | 
              
                            SA283 Grade D
                             | 
              
                
                
                  
                    
                      | 0.27 | 0.15-0.4 | 0.9 | 0.035 | 0.04 | - | - | - | ≤0.2 |   
                
                 | 
              - | 
            
                        
              | 15 | 
              ASTM  A283/A283M-2024 | 
              
                            Grade D
                             | 
              
                
                
                  
                    
                      | 0.27 | 0.15-0.4 | 0.9 | 0.03 | 0.03 | - | - | - | ≤0.2 |   
                
                 | 
              - | 
            
                        
              | 16 | 
              EN  10025-2-2019 | 
              
                            S275JR, 1.0044
                             | 
              
                
                
                  
                    
                      | 0.22 | - | 1.5 | 0.035 | 0.035 | 0.29 | 0.42 | 0.11 | 0.55 |   
                
                 | 
              - | 
            
                        
              | 17 | 
              EN  10025-2-2019 | 
              
                            S275J0, 1.0143
                             | 
              
                
                
                  
                    
                      | 0.2 | - | 1.5 | 0.03 | 0.03 | 0.29 | 0.42 | 0.11 | 0.55 |   
                
                 | 
              - | 
            
                        
              | 18 | 
              GB  712-2011 | 
              
                            AH32, L34402, A32
                             | 
              
                
                
                  
                    
                      | 0.18 | 0.5 | 0.9-1.6 | 0.03 | 0.03 | 0.2 | 0.4 | 0.08 | 0.35 |   
                
                 | 
              - | 
            
                        
              | 19 | 
              GB  712-2011 | 
              
                            DH36, L34904, D36
                             | 
              
                
                
                  
                    
                      | 0.18 | 0.5 | 0.9-1.6 | 0.025 | 0.025 | 0.2 | 0.4 | 0.08 | 0.35 |   
                
                 | 
              - | 
            
                        
              | 20 | 
              GB  712-2011 | 
              
                            EH32, L34405, E32
                             | 
              
                
                
                  
                    
                      | 0.18 | 0.5 | 0.9-1.6 | 0.025 | 0.025 | 0.2 | 0.4 | 0.08 | 0.35 |   
                
                 | 
              - | 
            
                        
              | 21 | 
              GB  712-2011 | 
              
                            FH32, L34407, F32
                             | 
              
                
                
                  
                    
                      | 0.16 | 0.5 | 0.9-1.6 | 0.02 | 0.02 | 0.2 | 0.8 | 0.08 | 0.35 |   
                
                 | 
              - | 
            
                        
              | 22 | 
              GB /T 711-2017 | 
              
                            20Mn
                             | 
              
                
                
                  
                    
                      | 0.17-0.23 | 0.17-0.37 | 0.7-1 | 0.035 | 0.03 | 0.2 | 0.3 | - | 0.25 |   
                
                 | 
              - | 
            
                        
              | 23 | 
              GB /T 711-2017 | 
              
                            25, 25#
                             | 
              
                
                
                  
                    
                      | 0.22-0.29 | 0.17-0.37 | 0.5-0.8 | 0.035 | 0.03 | 0.2 | 0.3 | - | 0.25 |   
                
                 | 
              - | 
            
                        
              | 24 | 
              ASTM  A573/A573M-2013 | 
              
                            Grade 65
                             | 
              
                
                
                  
                    
                      | 0.26 | 0.15-0.4 | 0.85-1.2 | 0.03 | 0.03 | - | - | - | - |   
                
                 | 
              - | 
            
                        
              | 25 | 
              ASTM  A529/A529M-2019 | 
              
                            A529 Grade 50
                             | 
              
                
                
                  
                    
                      | 0.27 | 0.4 | 1.35 | 0.04 | 0.05 | - | - | - | ≤0.2 |   
                
                 | 
              - | 
            
                        
              | 26 | 
              ASME  SA-1011/SA-1011M-2023 | 
              
                            SS Grade 50 [340]
                             | 
              
                
                
                  
                    
                      | 0.25 | - | 1.35 | 0.035 | 0.04 | 0.15 | 0.2 | 0.06 | 0.2 |   
                
                 | 
              - | 
            
                        
              | 27 | 
              ASTM  A1011/A1011M-2018(a) | 
              
                            SS Grade 50 [340]
                             | 
              
                
                
                  
                    
                      | 0.25 | - | 1.35 | 0.035 | 0.04 | 0.15 | 0.2 | 0.06 | 0.2 |   
                
                 | 
              - |