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2. SAE steel grades - Wikipedia

   en.wikipedia.org/wiki/SAE_steel_grades

   The SAE steel grades system is a standard alloy numbering system (SAE J1086 – Numbering Metals and Alloys) for steel grades maintained by SAE International. In the 1930s and 1940s, the American Iron and Steel Institute (AISI) and SAE were both involved in efforts to standardize such a numbering system for steels. These efforts were similar ...

3. Screw - Wikipedia

   en.wikipedia.org/wiki/Screw

   SAE grade 5.1 [52] Low or medium carbon steel; quench and tempered: No. 6– 1 ⁄ 2: 85 590 120 830 C25–40 SAE grade 5.2 [52] Low carbon martensitic steel; quench and tempered: 1 ⁄ 4 –1 85 590 120 830 C26–36 ASTM A449 - Type 2 [52] Low carbon martensitic steel; quench and tempered: C25–34 or : ASTM A325 - Type 1 [49] Medium carbon ...

4. Steel grades - Wikipedia

   en.wikipedia.org/wiki/Steel_grades

   For alloys in general (including steel), unified numbering system (UNS) of ASTM International and the Society of Automotive Engineers (SAE). American steel grades : AISI/SAE steel grades standard; British Standards; International Organization for Standardization ISO/TS 4949:2016; European standards – EN 10027

5. Unified numbering system - Wikipedia

   en.wikipedia.org/wiki/Unified_numbering_system

   Many material or standard specifications include a number of different UNS numbers that may be used within that specification. For example: UNS S30400 (SAE 304, Cr/Ni 18/10, Euronorm 1.4301 stainless steel) could be used to make stainless steel bars or stainless steel plates for pressure vessels or pipes . Conversely, A312 pipes could be made ...

6. Bolt (fastener) - Wikipedia

   en.wikipedia.org/wiki/Bolt_(fastener)

   Steel fasteners (grade 2,5,8) - the level of strength; Stainless steel fasteners (martensitic stainless steel, austenitic stainless steel), Bronze and brass fasteners - water proof usage; Nylon fasteners - used for the light material and water proof usage. In general, steel is the most commonly used material of all fasteners: 90% or more. [8]

7. 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.