To date, the metal market has grown so much that in its diversity an unprepared person can simply get lost and ultimately choose not what he needed initially. It is quite possible to avoid such a combination of circumstances. To do this, you need to persistently and long enough to study the relevant literature, GOSTs and other documentation. However, there is a much simpler method - in this article you will get acquainted with the most basic and necessary information about steel 15KHSND, the decoding of its designation, application, composition and even substitute brands. The proposed material, even the most unprepared person will save from painfully long and dull study of technical documentation.
Decoding of the name of steel
To an untrained person, the phrase “steel 15KHSND” will most likely seem like a magic spell or simply incoherent gibberish, however anyone who has come across metallurgy, even indirectly, will immediately be able to understand that something much more important is hidden behind this set of letters and numbers. It is by this designation that specialists recognize the properties and approximate composition of steel. So how do they do it? In fact, everything is simple:
- The number 15 paired with the letter "X" indicates the content of 0.15% chromium in the alloy.
- The letter "C" in the domestic steel marking system denotes the chemical element silicon.
- The letter "N" accurately indicates the content of nickel in steel.
- The letter "D" denotes such an element from the periodic table as copper.
- And since only chrome has a numerical designation, the percentage suspension of all subsequent elements indicated in the name is not so significant.
Application
Each individual steel grade always has its own personal state standard, or GOST, in which all related information relating to this steel grade is strictly regulated. 15KHSND, of course, was no exception. For it, in the corresponding GOST, the following designation is provided: "low-alloy structural steel for use in welded metal structures or chrome-silicon steel."
Most often, this brand is produced by sheet metal, which determines its further use in various industries.
To be more precise, the 15KHSND steel is supplied primarily to enterprises associated with the manufacture of prefabricated structures. For example, it is used in bridge building, mechanical engineering, construction and many other industries, which indicates some popularity of this steel grade.
Steel composition
The determining factor that attached certain properties to steel is its composition. From what chemical elements are contained in the alloy, it directly depends on whether it will be solid, what environmental conditions it can tolerate, what internal structure it will have, and much more. Also an important aspect is the percentage of one or another element, because it depends on how much those properties for which that element from the periodic table is responsible will manifest themselves.
The following chemical composition is characteristic of steel 15HSND:
- carbon - 0.15%;
- silicon - 0.55%;
- Manganese - 0.55%;
- chromium - 0.75%;
- nickel - 0.45%;
- copper - 0.3%;
- nitrogen - 0.012%;
- sulfur - 0.04%;
- phosphorus - 0.035%;
- arsenic - 0.08%;
Characteristic
As you can see, the list of elements is very extensive, but the percentage of each individual representative is very small, therefore they do not give significant additions to the strength characteristics of steel 15KHSND, however they significantly improve the structure, protecting the steel from various kinds of internal defects, whether it be cracks, micropores, flokens, cavity, and also have a very positive effect on its overall quality, and given the relatively low content of useful impurities, such steel becomes more profitable in the price / quality ratio.
Substitutes
If you search well, then any product on the market will have a competitor that almost completely matches the original or even surpasses it in something. A similar rule applies to metallurgy, where for each grade of steel there is at least one or several items from the category of "substitutes", that is, materials similar in properties and composition.
For steel 15HSND in the domestic market, the following analogues can be distinguished:
- 16G2AF - steel with a slightly larger amount of silicon in the composition, as well as with the addition of vanadium, which improves its strength characteristics.
- 15GF - almost the same as the previous option, with the exception of a lower percentage of elements in the composition.
- 14HGS is a cheaper, but no less balanced analogue in composition, suitable for lightly loaded structures.
- 16GS - in general, this is an excellent, albeit somewhat incomplete, analogue of 15HSND, suitable for structures that are subject to moderate static loads.
However, if you have work to do where you need to use steel for the construction of a particular structure or cladding, it is better not to cheapen and purchase the highest quality steel grade.