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AISI 1021
Category Steel
Class Carbon steel
Type Standard
Designations  United States: ASTM A29 , ASTM A510 , ASTM A519 , ASTM A545 , ASTM A548 , ASTM A576 , ASTM A659 , SAE J403 , SAE J412 , SAE J414 , UNS G10210

Composition
ElementWeight %
C  0.18-0.23 
Mn  0.60-0.90 
P  0.04 (max) 
S  0.05 (max) 

Mechanical Properties
Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 7.858 25  
Poisson's Ratio 0.27-0.30 25  
Elastic Modulus (GPa) 190-210 25  
Tensile Strength (Mpa) 470  25  cold drawn (round bar (19-32 mm)) more
Yield Strength (Mpa) 395 
Elongation (%) 15 
Reduction in Area (%) 40 
Hardness (HB) 121  25  cold drawn (round bar (19-32 mm)) more
Glossary