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Product Details, Specifications, and Technical Information

Alloy Steel Rectangle Bar 4340 has high strength, toughness, wear resistance, and fatigue strength. It can be machined in all states other than hardened and it is easily welded. Additionally, 4340 can be cold worked easily in the annealed state. It is typically used in military aircraft, automotive systems, hydraulic parts, machine tools, and a steel crankshafts.

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Dimension Name Specification
Thickness 0.75
Width 1
Max Length 144
MTR Availability No
Material Alloy Steel
Shape Bar-Rectangle
Custom Cut Warehouse 1
Alloy 4340
Weight/Lineal Foot
2.54 pounds
Please note that this data is to be used ONLY FOR REFERENCE, NOT FOR DESIGN, and by using it,you agree that any decisions you make regarding materials for your project are at your own discretion.
Mechanical Properties
Property Value
Density g/cm^3 8
Yield Tensile Strength KSI 63
Brinell Hardness 500 kg load 197
Ultimate Tensile Strength KSI 97
Rockwell Hardness B Scale 92
Elongation % in 2 in. 26
Melting Point °F 2590 - 2660
Shear Strength KSI 62
Electrical Conductivity % IACS 7
Chemistry Information: 4340 Alloy Steel
Element Percentage
C 0.37 - 0.43
Cr 0.8
Fe 96
Mn 0.7
Ni 1.83
P 0.035 max
S 0.04 max
Si 0.23
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