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Abrasion resistant steel is a high-carbon alloy steel that is produced to resist wear and stress. There are several grades of abrasion resistant steel, including AR200, AR235, AR400, AR450, AR500 and AR600.
As well, the most common material, AR500 steel, or Abrasion Resistant/ Brinell Hardness 500 steel, is actually not created for armour purposes, and thus can suffer major variances in hardness According to Leeco Steel, "While often requested for ammunition target surfaces, AR500 steel plate is not certified for ballistic use". [12]
Top steel producing companies. This is a list of the largest steel-producing companies in the world mostly based on the list by the World Steel Association.The list ranks steelmakers by volume of steel production in millions of tons over time and includes all steelmakers with production over 10 million in 2021.
MIL-DTL-46177 is an older, now-replaced standard for a high hardness steel RHA. [4] It specifies a harder steel that is nearly identical to AR500 in terms of tensile and yield strength. [5] The Brinell hardness of AR500 is in the 477-534 range. MIL-DTL-46100E specifies a steel of identical hardness. [3]
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Donald Trump continues to threaten tariffs against foreign nations, this time toward a bloc of nine countries if they try to undermine the dollar's global dominance.
The economy enters 2025 in reasonably good shape, with a low unemployment rate, modest inflation, a trend toward declining interest rates and strong corporate profit growth that has been giving ...
The Improved Modular Tactical Vest (IMTV) and Improved Scalable Plate Carrier (ISPC) are the new models. "The IMTV will be the main body armor system for Marines, the Corps plans to order about 70,000 of the improved plate carriers, far more than the estimated 10,000 to 14,000 plate carriers in use today". [30]