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  • Steel Hex Bar, Unpolished (Mill) Finish, 7/8" Across Flats, 36" Length
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Steel Hex Bar, Unpolished (Mill) Finish, 7/8" Across Flats, 36" Length


Price: $51.68 & FREE Shipping. Details
Only 5 left in stock (more on the way).
Ships from and sold by Amazon.com.

Specifications for this item
Brand Name Small Parts
Exterior Finish Unpolished (Mill)
Item Shape Hex Bar
Length Tolerance +/-3  inches
Material Composition Solid
Material Type Steel
Number of Items 1
Overall Length 36  inches
Overall Width 7/8  inches
Part Number 4140HT0.875HEXL3.000
Production Method Seamless
System of Measurement Inch
Temper N/A
Thickness 7/8  inches
UNSPSC Code 30000000

The 4140 alloy steel hex bar has an unpolished (mill) surface and a standar... Read full product description



Product Features

  • 4140 alloy steel has high strength, good machinability, and high hardenability
  • Unpolished (mill) surface has no finish
  • Standard tolerance

Product Details


Product Description

The 4140 alloy steel hex bar has an unpolished (mill) surface and a standard tolerance. The 4140 alloy steel grade contains chromium and molybdenum for high strength and has good machinability. This material can be heat treated for higher hardness.

Steel is an iron alloy with carbon and other elements that modify the steel to achieve specific properties. In general, steels with higher carbon content have greater strength, hardness, and wear resistance, while those with lower carbon content have more formability, weldability, and toughness. Carbon steels, which include most AISI-SAE grades in the 1000 range, are classified by their level of carbon content as low (below 0.3%), medium (0.3% to 0.6%) and high (0.6% and above). Alloy steels, which include AISI-SAE grades in the 1300 and 4000 ranges and above, incorporate elements such as chromium, molybdenum, and nickel to modify properties like machinability and corrosion resistance. Tool steels, which include most grades with a letter and number grade designation, have high carbide content for wear resistance, high hardness, and the ability to hold a cutting edge. Some tool steels are designed to resist deformation when used in elevated temperatures.

Tensile strength, used to indicate a material’s overall strength, is the peak stress it can withstand before it breaks. Wear resistance indicates the ability to prevent surface damage caused by contact with other surfaces. Toughness describes the material's ability to absorb energy before breaking, while hardness (commonly measured as indentation hardness) describes its resistance to permanent surface deformation. Formability indicates how easily the material can be permanently shaped. Machinability describes how easily it can be cut, shaped, finished, or otherwise machined, while weldability characterizes the ability to be welded.


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