Specifications
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Material Meets These Standard(s):

AMS6415,

Weight/Lineal Foot: 1.05

Dimension Name Value
Alloy 4340
Temper Normalized
Diameter 0.625
Max Length 144
MTR Availability Yes
Material Alloy Steel
Shape Bar-Round
Custom Cut Warehouse 1
Overview

See Alloy Steel Tolerances

Alloy Steel Round Bar 4340 Normalized Cold Finish 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.

Weight/Lineal Foot
1.05 pounds
Material Specifications

This material meets the following specs : AMS 6415

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.
Chemistry Information: 4340 Alloy Steel

Element

Percentage

Cr 0.8
C 0.37 - 0.43
Fe 96
Mn 0.7
P 0.035 max
S 0.04 max
Ni 1.83
Si 0.23
Mechanical Properties

Property

Value

Brinell hardness  363
Rockwell Hardness B Scale 100
Elongation Typical % 12
Density g/cm^3 8
Melting Point °F 2580 - 2650
Modulus of Elasticity KSI x 10^3 29
Specific Heat BTU/lb-°F (32-212F) 0 min
Thermal conductivity BTU-in/hr-ft^2-°F 309
Ultimate KSI 190
Yield KSI 120
Ultimate shear strength KSI 110
Reduction of Area  36
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.

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