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Germany steel grades : DIN standard. China steel grades : GB standard. Czech steel grades : ČSN standard. Russia steel grades : GOST standard. Spain steel grades : UNE standard. France steel grades : AFNOR standard. Italy steel grades : UNI standard. Sweden steel grades : SIS standard. Norway steel grades : DNV standard.
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.
Duplex stainless steel. Duplex stainless steels[1][2][3][4][5] are a family of stainless steels. These are called duplex (or austenitic-ferritic) grades because their metallurgical structure consists of two phases, austenite (face-centered cubic lattice) and ferrite (body centered cubic lattice) in roughly equal proportions.
Structural steel. Structural steel is a category of steel used for making construction materials in a variety of shapes. Many structural steel shapes take the form of an elongated beam having a profile of a specific cross section. Structural steel shapes, sizes, chemical composition, mechanical properties such as strengths, storage practices ...
Abrasion resistant steel is typically used in applications requiring high wear resistance, including backhoe buckets and teeth, bulldozer blades, dump truck beds, ore and coal chutes, augers and aggregate conveyors. [6] Additional uses include shooting targets and armor, AR500 steel is commonly used for these applications as higher BHN steels ...
17-4 stainless steel. SAE Type 630 stainless steel (more commonly known as 17-4 PH, or simply 17-4; also known as UNS S17400) is a grade of martensitic precipitation hardened stainless steel. It contains approximately 15–17.5% chromium and 3–5% nickel, as well as 3–5% copper. [1] The name comes from the chemical makeup which is ...
41xx steel. 41xx steel is a family of SAE steel grades, as specified by the Society of Automotive Engineers (SAE). Alloying elements include chromium and molybdenum, and as a result these materials are often informally referred to as chromoly steel (common variant stylings include chrome-moly, cro-moly, CrMo, CRMO, CR-MOLY, and similar).
The beginnings of the steel industry in Italy were strongly influenced by the modest presence of underground iron ore and coal in particular, that occurred in 1880, an increasing import of pig iron from abroad. With the widespread application of iron in the railways and in the mechanical industry in general witnessed the slow renewal of the old ...