Attention to Detail for Accurate Custom Cuts

With the tightest custom cut tolerances of any small quantity US metal supplier, your materials get a 3-point inspection to ensure quality and accuracy before it ships.

Product Details, Specifications, and Technical Information

shape Image

Dimension Name


Diameter 0.3125
Max Length 144
Alloy 4340
Temper Normalized
Production Method Cold Finish
MTR Availability Yes
Material Alloy Steel
Shape Bar-Round
Custom Cut Warehouse 1

Weight/Lineal Foot

0.26 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
Brinell Hardness 500 kg load 245
Rockwell Hardness B Scale 100
Density g/cm^3 7
Elongation Typical % 12
Melting Point °F 2580 - 2650
Modulus of Elasticity KSI x 10^3 29
Reduction of Area % 36
Specific Heat BTU/lb-°F (32-212F) 1
Tensile Strength KSI 185
Thermal Conductivity BTU-in/hr-ft^2-°F 309
Yield Strength KSI 125
Shear Strength KSI 110

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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