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AISI 1055
Category Steel
Class Carbon steel
Type Standard
Designations  Germany: DIN 1.1209
United States: ASTM A29 , ASTM A510 , ASTM A576 , ASTM A682 , FED QQ-S-700 (1055) , SAE J403 , SAE J412 , SAE J414 , UNS G10550

Composition
ElementWeight %
C  0.50-0.60 
Mn  0.60-0.90 
P  0.04 (max) 
S  0.05 (max) 

Mechanical Properties
Properties Conditions 
T (°C)Treatment
Density (×1000 kg/m3) 7.7-8.03 25  
Poisson's Ratio 0.27-0.30 25  
Elastic Modulus (GPa) 190-210 25  
Tensile Strength (Mpa) 660  25  cold drawn (round bar (19-32 mm)) more
Yield Strength (Mpa) 560 
Elongation (%) 10 
Reduction in Area (%) 40 
Hardness (HB) 197  25  cold drawn (round bar (19-32 mm)) more

Thermal Properties
Properties Conditions 
T (°C)Treatment
Thermal Expansion (10-6/ºC) 14.8  20-700 more annealed 
Glossary