AISI 1020 is a low hardenability and low tensile carbon steel with Brinell hardness of 119 – 235 and tensile strength of 410-790 MPa. It has high machinability, high strength, high ductility and good weldability. It is normally used in turned and polished or cold drawn condition.
 
Chemicla Properties:
 
 
 
 
  
 
   
Element
 
   
Content
 
  
 
  
 
   
Carbon, C
 
   
0.17 - 0.230 %
 
  
 
  
 
   
Iron, Fe
 
   
99.08 - 99.53 %
 
  
 
  
 
   
Manganese, Mn
 
   
0.30 - 0.60 %
 
  
 
  
 
   
Phosphorous, P
 
   
≤ 0.040 %
 
  
 
  
 
   
Sulfur, S
 
   
≤ 0.050 %
 
  
 
 

 
Mechanical Properties:
 
 
 
 
 
  
 
   
Mechanical Properties
 
   
Metric
 
   
Imperial
 
  
 
  
 
   
Hardness, Brinell
 
   
111
 
   
111
 
  
 
  
 
   
Hardness, Knoop (Converted from Brinell hardness)
 
   
129
 
   
129
 
  
 
  
 
   
Hardness, Rockwell B(Converted from Brinell hardness)
 
   
64
 
   
64
 
  
 
  
 
   
Hardness, Vickers (Converted from Brinell hardness)
 
   
115
 
   
115
 
  
 
  
 
   
Tensile Strength, Ultimate
 
   
394.72 MPa
 
   
57249 psi
 
  
 
  
 
   
Tensile Strength, Yield
 
   
294.74 MPa
 
   
42748 psi
 
  
 
  
 
   
Elongation at Break (in 50 mm)
 
   
36.5 %
 
   
36.5 %