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Product Details, Specifications, and Technical Information

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Cold Finish Alloy Steel Round Bar 4130 (4.5") offers good weldability without compromising steel abrasion and impact resistance. 4130 is commonly used in structural applications, including gears, fasteners, and some aircraft exterior as it has good machinability, good weldability, and can be heat treated.

shape Image
Dimension Name Specification
Diameter 4.5
Max Length 144
MTR Availability Yes
Full Length true
Material Alloy Steel
Shape Bar-Round
Custom Cut Warehouse 1
Alloy 4130
Temper Normalized
Material Specifications

This material meets the following specs: ASTM -A108(call for availability), AMS -6348, AMS -6370, AMS/MIL -S-6758

Weight/Lineal Foot
51.23 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
Ultimate Tensile Strength KSI 97
Density g/cm^3 8
Electrical Conductivity % IACS 7
Elongation % in 2 in. 26
Brinell Hardness 500 kg load 197
Rockwell Hardness B Scale 92
Shear Strength KSI 62
Yield Tensile Strength KSI 63
Melting Point °F 2590 - 2660
Chemistry Information: 4130 Alloy Steel
Element Percentage
C 0.28 - 0.33
Cr 0.8 - 1.1
Fe 97.3 - 98.22
Mn 0.4 - 0.6
Mo 0.15 - 0.25
P 0.035 max
Si 0.15 - 0.35
S 0.04 max
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