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2. Threaded rod - Wikipedia

   en.wikipedia.org/wiki/Threaded_rod

   A threaded rod, also known as a stud, is a relatively long rod that is threaded on both ends; the thread may extend along the complete length of the rod. [1] They are designed to be used in tension. [2] Threaded rod in bar stock form is often called all-thread (ATR); other names include fully-threaded rod, redi-rod, continuously-threaded rod ...

3. ASTM A354 - Wikipedia

   en.wikipedia.org/wiki/ASTM_A354

   ASTM A354 is an ASTM International standard that defines chemical and mechanical properties for alloy steel bolts, screws, studs, and other externally threaded fasteners.It is officially titled: Standard Specification for Quenched and Tempered Alloy Steel Bolts, Studs, and Other Externally Threaded Fasteners.

4. High-strength low-alloy steel - Wikipedia

   en.wikipedia.org/wiki/High-strength_low-alloy_steel

   This microstructure gives the steels a low yield strength, high rate of work hardening, and good formability. [1] Microalloyed steels: Steels which contain very small additions of niobium, vanadium, and/or titanium to obtain a refined grain size and/or precipitation hardening. A common type of micro-alloyed steel is improved-formability HSLA.

5. Steel grades - Wikipedia

   en.wikipedia.org/wiki/Steel_grades

   The next set of 3 digits gives the steel's minimum yield strength. So S355 has a minimum yield strength of 355 MPa for the smallest thickness range covered by the relevant standard – i.e. EN10025. [2] Below is a table indicating the most common application codes.

6. 4340 steel - Wikipedia

   en.wikipedia.org/wiki/4340_steel

   4340 steel is an ultra-high strength steel classified a medium-carbon, ... The machinability of 4340 steel in the annealed condition is rated at 57%, based on ...

7. Prestressed concrete - Wikipedia

   en.wikipedia.org/wiki/Prestressed_concrete

   This compression is produced by the tensioning of high-strength tendons located within or adjacent to the concrete and is done to improve the performance of the concrete in service. [5] Tendons may consist of single wires, multi-wire strands or threaded bars that are most commonly made from high-tensile steels, carbon fiber or aramid fiber.