4140 HR ALLOY BAR
HR 4140 steel bar is a medium carbon steel that has a high hardenability. This grade is also widely used for forging. 4140 hot rolled steel also has good fatigue and impact resistance after heat treating. Eaton Steel Bar Company stocks many diameters of 4140 hot rolled steel to meet the markets demand. We also supply 4140 steel bar to various industries like ATV, automotive, construction, and military.
4140 HR Steel Bar Applications
Typical applications for this grade include drill collars, pins, axles, bolts, and shafts.
Shapes and Sizes
Eaton Steel Bar Company supplies 4140 steel bar in a variety of sizes ranging from 7/16”-15”. The shapes available for this grade include:
Standard "4140 Grade" Chemical Composition
Estimated Mechanical Property Ranges for "Grade 4140"
|Tensile strength (psi)||95,000 - 105,000|
|Yield strength (psi)||65,000 - 75,000|
|Elongation in 2” (%)||20 - 30|
|Reduction of area (%)||35 - 45|
|Brinell Hardness (BHN)||200 - 230|