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AISI 1340
Conditions Tensile Properties 
T (°C)Treatment
25 annealed at 800°C   Tensile Strength (MPa) 703.3 
Yield Strength (MPa) 436.4 
Elongation (%) 25.5 
Reduction in Area (%) 57.3 
25 normalized at 870°C   Tensile Strength (MPa) 836.3 
Yield Strength (MPa) 558.5 
Elongation (%) 22.0 
Reduction in Area (%) 62.9 
25 oil quenched, fine grained, tempered at 205°C   Tensile Strength (MPa) 1806 
Yield Strength (MPa) 1593 
Elongation (%) 11 
Reduction in Area (%) 35 
25 oil quenched, fine grained, tempered at 315°C   Tensile Strength (MPa) 1586 
Yield Strength (MPa) 1420 
Elongation (%) 12 
Reduction in Area (%) 43 
25 oil quenched, fine grained, tempered at 425°C   Tensile Strength (MPa) 1262 
Yield Strength (MPa) 1151 
Elongation (%) 14 
Reduction in Area (%) 51 
25 oil quenched, fine grained, tempered at 540°C   Tensile Strength (MPa) 965 
Yield Strength (MPa) 827 
Elongation (%) 17 
Reduction in Area (%) 58 
25 oil quenched, fine grained, tempered at 650°C   Tensile Strength (MPa) 800 
Yield Strength (MPa) 621 
Elongation (%) 22 
Reduction in Area (%) 66