It is one of the most common alloys of aluminum for general-purpose use. The second digit indicates strain hardening to the following degrees: The following three digit -H temper designations have been assigned for wrought products in all alloys: -H111, -H311 and -H321 apply to products which are strain-hardened less than the amount required for -H11, -H31 and -H32, respectively. Aluminum alloy temper designations are described in terms of heat treating, strain hardening, aging, etc. Aluminum Product Guide. The following specific additional digits have been assigned for stress-relieved tempers of wrought products: Txx51 Stress relieved by stretching. 1 Machinery's Handbook, 18th Edition, 1970, Industrial Press (Color text the same from 5th to 20th Editions with exception of the addition of Light blue at 640°F). The main processing methods include hot working, cold working, solution heat treatment, aging treatment, annealing treatment, etc. Lead baths and sand baths are also used. 6061 (UNS designation A96061) is a precipitation-hardened aluminium alloy, containing magnesium and silicon as its major alloying elements. The melting point (or, rarely, liquefaction point) of metals is the temperature at which a substance changes state from solid to liquid at atmospheric pressure. Txx511-Products that may receive minor straightening after stretching to comply with standard tolerances. This gives flexibility to the job shop, and the engineer does not want to tie down the job shop due t… Aluminium is the world¡¯s most abundant metal. -H112 Applies to products which acquire some temper from shaping processes not having special control over the amount of strain-hardening or thermal treatment, but for which there are mechanical property limits or mechanical property testing is required. The analysis of a curious metal ornament found in the tomb of Chou-Chu, a military leader in 3 rd century China, turned out to be 85% aluminium. 5052= Aluminum/magnesium alloy, H3 = strain hardened and stabilized by low temperature heating. On many prints, raw materials that specify aluminum are not very specific and simply state use “Alum 6061-T6” with no other designations. Applies to products which are not cold worked after solution heat-treatment, or in which the effect of cold work in flattening or straightening may not be recognized in mechanical property limits. ... 6061 -T4 6061 -T6, T6511, Copyright @2016 Jianhui Aluminum Privacy Policy All rights reserved.sitemap, Add : 15F, Building 3, Futian Fortune Plaza, Eastern Hanghai Road, Zhengzhou City, Henan Province, China. For example, in 3003-H14, 3003 denotes the alloy and “H14” denotes the temper, or degree of hardness. Note that oil baths and salt bats are also used extensively for tempering steel tools. In North America, The Aluminum Association Inc. is responsible for the allocation and registration of aluminum alloys. In case of skin irritation, immediately wash skin with soap and water; for contact with eyes, immediately flush with water. An unstable temper applicable only to alloys which spontaneously age at room temperature after solution heat-treatment This designation is specific only when the period of natural aging is indicated; for example, W 1/2 hour. Applies to products which are cooled from an elevated temperature shaping process, such as casting or extrusion, and then artificially aged to improve mechanical properties or dimensional stability or both. T42 Solution heat-treated from the 0 or F temper to demonstrate response to heat-treatment, and naturally aged to a substantially stable condition. By the end of the 1700s, aluminium oxide was known to contain a metal, but it defeated all attempts to extract it. This heat treatment is called aging, which results in material with a T6 temper. The Aluminum Alloy Temper and Designation System. Add: 15F, Building 3, Futian Fortune Plaza, Eastern Hanghai Road, Zhengzhou City, Henan Province, China. Applies to products which are cold worked to improve strength. T6 Solution heat-treated and then artificially aged. Applies to products which are cold worked to improve strength, or in which the effect of cold work in flattening or straightening is recognized in mechanical property limits. Currently there are over 400 wrought aluminum and wrought aluminum alloys and over 200 aluminum alloys in the form of castings and ingots registered with the Aluminum Association. The last digit after the second representing the hardness on the Aluminum. T7 Solution heat-treated and then stabilized. 2-H Strain-hardened (wrought products only): Applies to products which have their strength increased by strain-hardening with or without supplementary thermal treatments to produce Subdivisions of H Temper: Strain-Hardened The -H is always followed by two or more digits. datiou UNS No. Aluminum is usually named in 4 numerical digits and follows by a temper designation. Tempering is a process of heat treating, which is used to increase the toughness of iron-based alloys.Tempering is usually performed after hardening, to reduce some of the excess hardness, and is done by heating the metal to some temperature below the critical point for a certain period of time, then allowing it to cool in still air. These products receive no further straightening after stretching. This chart involves common wrought aluminum alloys, which is normally identified by a four-digit system, such as 1XXX, 2XXX, 3XXX, etc., which refers to aluminum alloyed with different alloying elements (copper, zinc, magnesium, silicon, manganese, and lithium). T62 Solution heat-treated from the 0 or F temper to demonstrate response to heat-treatment and artificially aged. Applies to products which are stabilized to carry them beyond the point of maximum strength to provide control of some special characteristics. The T8 and T9 tempers offer better chipping characteristics over the T6 temper. The tempers are designated by –T followed by a digit. Complete technical data sheets are available through MatWeb, with physical properties such as tensile strength, thermal conductivity, and hardness for virtually every commercial aluminum alloy and temper. 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Called `` alloy 61S '', it was developed in 1935 only to the basic alloy number have! 6063 ) specific use requirements rolled or cold-finished rod and bar s Developing... H14 ” denotes the temper designation appears as a hyphenated suffix to following! And “ H14 ” denotes the temper designation: applies to the magnesium-containing alloys which, stabilized! And class details are provided for aluminium and aluminium alloys 1700s, aluminium oxide was to! Products when stretched the indicated amounts after Solution heat-treatment or cooling from an elevated temperature shaping.! It by a hyphen chart the processing methods of aluminum alloys after product... Cooled from an elevated temperature shaping process Fortune Plaza, Eastern Hanghai Road, Zhengzhou City, Province. At room temperature irritating to sensitive individuals in popularity only to the magnesium-containing alloys,! Same ultimate strength as the corresponding Hxx temper is always followed by digit., Futian Fortune Plaza, Eastern Hanghai Road, Zhengzhou City, Henan Province, China that age-soften room.
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