Extruded aluminum profiles
Often aluminum profiles called all “lengthy” products with a constant cross-section, which is manufactured by hot pressing. Both of aluminum, and aluminum alloy. meanwhile, The standards distinguish between several types of extruded aluminum products:
- rods – round, square, rectangular, hexagon
- tubes – structural (“dies”) and seamless
- and bus bars.
The shape and dimensions of standard profiles
Standards with GOST 13616 GOST 13624, GOST 13737, GOST 13738, GOST 17575 and GOST 17576 set the shape and dimensions of standard profiles (aluminum, as well as magnesium) of various sections:
- of corner,
Extruded pipe of aluminum and aluminum alloys made according to GOST 18482-79, and bars - according to GOST 21488-97. Interesting, that a round rods are "monsters" in diameter 400 mm square – with the inscribed circle 200 mm. To call them "rods", as required by standards, language is not at all turns, so, for example, large round bars are often called "circles". The shape of its cross-section, most used aluminum profiles are not related to the standard, and designed for a specific design solution. Shape and dimensions of the cross-sections of aluminum profiles nonstandard and pipes agree between the manufacturer and the consumer. They are also called Special aluminum profiles.
Aluminum profiles according to GOST 8617-81
Requirements for tolerances of dimensions and shape aluminum profiles general purpose and their mechanical properties are set GOST 8617-81. It applies to profiles of aluminum and aluminum alloys according to GOST 4784-97 and GOST 1131-76:
- Aluminum grades AD0, AD1, ADS, AD;
- alloys of the Al-Mn system: AMts, AMcS;
- alloys of the Al-Cu system: D1, D16, AK4 and AK6;
- alloys of the Al-Mg-Si system: AD31, AD33, AD35 and AB;
- alloys of the Al-Mg system: AMg2, AMg3, AMg3S, AMg5 and AMg6;
- alloys of the Al-Zn system: 1915, 1925, B95.
Aluminum profiles according to GOST 22233
GOST 22233: edition 2001 and 1993
Aluminum profiles for cladding aluminum structures (for example, window, doors, facade structures) require greater precision in shape and dimensions, as well as different small thick walls and shelves. Therefore, they are made of an alloy of AD31 GOST 4784-97. Requirements for aluminum profiles in Russia and most other CIS determines GOST 22233-2001, and in Ukraine - of its previous version – DSTU B V.2.6-3-95 (GOST 22233-93), which provides for the manufacture of profiles also of aluminum alloy 1915, that almost does not apply now. of the guests 22233-2001 This alloy is excluded, and it is further introduced international analogs alloy AD31 - alloys 6060 and 6063.
Aluminum alloy AD31 in CCITT 22233-2001
Moreover, Unlike edition 1993 year Standard 22233-2001 “untie” AD31 aluminum alloy from its “native” standard GOST 4784-97 and he determines the chemical composition “his” alloy AD31, which is significantly different from, that is registered in the GOST 4784-97 (as amended 2000 of the year).
Condition of aluminum profiles: T4, T6, T64, T66
In contrast to the Standard 8617-81 and in addition to the previous version of the Standard 22233-93 in the latest version of GOST 22233-2001 introduced changes to the applied states of aluminum profiles:
- for the condition "hardened and naturally aged", in addition to the "old" designation T, an alternative international designation T4 has been added;
- for the condition "hardened and artificially aged", in addition to the "old" designation T1, alternative international variants T6 and T64 have been added;
- a new (international) designation was introduced for the condition "hardened and artificially aged of increased strength" with designation options: modified "old" T1 (22) and T1 (25), as well as the new (international) T66.
according to EN 515 T64 state is hardening and then artificial aging to an underdeveloped state (between T6 and T61) to improve the formability of the profiles, for example, bending. Condition T66 - quenching and then artificial aging - the level of the mechanical properties of the above, than T6 due to the special manufacturing process control.
“cold” and “warm” Aluminum window profiles
GOST 22233-2001 unlike all known standards for aluminum profiles, it also combines requirements for pure extruded aluminum profiles (“cold”), and combined profiles - so-called "warm" profiles. Combined profiles are intended for the manufacture of insulated translucent walling, for example, warm aluminum windows. This profile consists of two aluminum profiles, external and internal, which are connected to the entire length of the two, less one, thermal insulation so-called thermal barrier. In Ukraine, there are two separate standards: DSTU B V.2.6-3-95 (GOST 22233-93) - for aluminum profiles and DSTU B V.2.6-30: 2006 - for combined profiles.
Aluminum profiles according to EN 755 и EN 12020
In the European Union since the early 2000s, the current European standard EN 755 on extruded aluminum profiles, rods and pipes, general purpose, which consists of 9 parts. The chemical composition of all extruded products sets the standard EN 573, and the symbols states of aluminum and aluminum alloy material - EN 515. Profiles with high dimensional accuracy - Precision - produced in accordance with EN 12020. Thus, formally, Without going into the details, standard EN 755 corresponds to our guest 8617, standard EN 12020 – GOST 22233.
DIN 1748, DIN 17615 и DIN 1725 – Farewell!
Note, that even in 2001 by EN standards 755-9, EN 12020-2 и EN 573-3 We replaced all similar national standards in the European Union, including the famous German DIN standards 1748-4, DIN 17615-3 и DIN 1725-1. Need to say, These "old" standards DIN just formed the basis of the new EN.
fun, that so far – 15 years later – Websites of some enterprises still coasting declare the compliance of its aluminum profiles this non-existent German standards.
Aluminum profiles for ANSI H35.2
US tolerances requirements to the size and shape of articles extruded aluminum - profiles, pipe, bars – ANSI N35.2 specifies the standard, which is designed and curated by the American Aluminum Association (AA). This industry organization aluminum industry regularly publishes compilations – exactly, collections – with the requirements of standards for various types of aluminum products, for example, «Aluminum Data and Standards» – for all aluminum “rental”.