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HSLA steels are also more resistant to [[rust]] than most carbon steels, due to their lack of pearlite – the fine layers of ferrite (almost pure iron) and cementite in pearlite.{{Fact|date=October 2008}} The [[Angel of the North]] at [[Gateshead]], [[England]] is a well known example of an unpainted HSLA structure (the actual alloy used is called [[COR-TEN]] and includes a small amount of copper). HSLA steels usually have densities of around 7800 kg/m³.<ref>{{
== Classifications ==
* '''Weathering steels''': Steels which have better corrosion resistance. A common example is COR-TEN.
* '''Control-rolled steels''': Hot rolled steels which have a highly deformed austenite structure that will transform to a very fine equiaxed ferrite structure upon cooling.
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* '''[[Dual-phase steel]]s''': These steels have a ferrite microstruture that contain small, uniformly distributed sections of martensite. This microstructure gives the steels a low yield strength, high rate of work hardening, and good formability.<ref name=kts/>
== SAE grades ==
The [[Society of Automotive Engineers]] (SAE) maintains standards for HSLA steel grades because they are often used in automotive applications.
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== References ==
=== Notes ===
{{reflist}}
=== Bibliography ===
* {{Citation | last = Degarmo | first = E. Paul | last2 = Black | first2 = J T. | last3 = Kohser | first3 = Ronald A. | title = Materials and Processes in Manufacturing | publisher = Wiley | year = 2003 | edition = 9th | isbn = 0-471-65653-4}}.
* {{Citation |last= Oberg |first= E. |coauthors= et al. |title= Machinery's Handbook |edition= 25th |year= 1996 |publisher= Industrial Press Inc}}
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