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AISI 1018
Category Steel
Class Carbon steel
Type Standard
Designations  United States: AMS 5069 , AMS 5069A , ASTM A108 , ASTM A29 , ASTM A510 , ASTM A513 , ASTM A519 , ASTM A544 , ASTM A545 , ASTM A548 , ASTM A549 , ASTM A576 , ASTM A659 , MIL SPEC MIL-S-11310 (CS1018) , SAE J403 , SAE J412 , SAE J414 , UNS G10180

Composition
ElementWeight %
C  0.15-0.20 
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) 634  25  carburized at 925°C, cooled, reheated to 775°C, water quenched, tempered at 175°C, core properties (round bar (19-32 mm)) more
Yield Strength (Mpa) 386 
Elongation (%) 27 
Reduction in Area (%) 48 
Hardness (HB) 197  25  carburized at 925°C, cooled, reheated to 775°C, water quenched, tempered at 175°C, core properties (round bar (19-32 mm)) more
Glossary