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Carbon Steel 4340 Annealed

Material Group

Material GroupCarbon Steel
Alloy4340 Annealed
Equivalent Grades40NiCrMo6
TechnologyCNC Machining & Turning

Mechanical Properties

Elongation %22
Tensile Strength MPa690
Yield Strength MPa470
Shear Strength MPa430
Hardness Brinell220

Physical Properties

Density g/cm37.8
Melting Point (±50) °C1460
Thermal Conductivity W/mK44
Coefficient of Thermal expension
Electrical Conductivity %IACS7.5

Composition

Al
Cu
Mg
Fe (max)95.1-96.3
Tin (max)
Ni (max)1.7-2
Cr0.7-0.9
C0.38-0.43
Mo0.2-0.3
Mn0.6-0.8
Si0.15-0.35
Zn
Sn
Ca
Ni
Bi
Ti
S0.04
Sb
P0.035
Pb
Cd
Other