First, the main alloying elements 6061 6061 aluminum alloy element is magnesium and silicon, and the formation of Mg2Si phase. If a certain amount of manganese and chromium, the effect can be bad iron; sometimes a small amount of copper or zinc in order to improve the strength of the alloy without significantly reducing its corrosion resistance; a small amount of conductive material copper, titanium, and to offset the adverse effects of iron on the conductivity; zirconium or titanium can be recrystallized grain refinement and control of the organization; to improve machinability, can be added lead and bismuth. Mg2Si in solution in the aluminum, alloy artificial age hardening function. 6061 aluminum is the main alloying elements of magnesium and silicon, with moderate strength, good corrosion resistance, weldability, oxidation is better. Second, the characteristics of Mg-Al-Mg-Al-6061 6061-T651 is the main alloying 6 alloy is heat treated pre-stretching process high quality aluminum products; magnesium aluminum 6061 has excellent processing properties, good corrosion resistance, high toughness and after processing without distortion, color film is easily oxidized with excellent results and other fine features. Main Uses: Widely used requires a certain strength and high corrosion resistance of various industrial structures, such as the manufacture of trucks, tower building, ship, train, railway vehicles. Third, the 6061 uses a typical representative of uses including aerospace fixtures, electrical fixtures, communications, is also widely used in automated machinery parts, precision machining, mold manufacturing, electronics and precision instruments, SMT, PC board solder vehicles and so on. Aluminum basic state Code: F freedoms apply to the processing state in the molding process, hardening and heat treatment conditions for the special requirements of the product, the mechanical properties of the status of the product is not specified (not common) O annealed condition applies to the fully annealed minimum strength of processed products (occasionally) H hardening state applicable to improve the strength of the product through work hardening, hardening products after processing through (or not pass) decreased the strength of the additional heat treatment (generally non-heat-strengthened material) W solid solution heat treated condition an unstable state, applies only after solution heat treatment, the natural aging of the alloy at room temperature, the status code indicates that the product is only natural aging stage (not common) T heat treatment (unlike F , O, H state) apply after heat treatment, after (or without) to stabilize the hardening products. T code must be followed by one or more digits (usually heat-strengthened material) our common non-heat-treated aluminum alloy reinforced the status code is usually followed by the letter H plus two digits. As 1100 H14. Following is a brief description of the meaning of the content of the following state code. Followed by the letter H in general with two digits: the first digit indicates the method is the hardening process. H behind the first digit are: 1,2,3,4 i.e. H1 * H1 * indicates simply hardening process H2 * H2 * indicates incomplete hardening and annealing H3 * H3 * indicates hardening and stabilizing treatment H4 * H4 * indicates painting and hardening process of the second digit indicates the material is achieved by hardening. H with the back of the second digit: Hardness H 1,2,3,4,5,6,7,8,9 both H * 1 0 * 2 between the two 1/4 hard with H * 3 2 4 between hardness H * 41/2 hard hardness H 5 4 H * between * 6 and 6 3/4 hard and hardness H * 7 6 * 8 H 8 between full hard state H * 9 superhard state (behind H with three numbers is not much, only a few. H111 said after the final annealing carried out the right amount of work hardening. H112 that applies to the thermo-forming products. H116 said magnesium content ≥ 4.0% 5 * * Department of Product alloy.) our common heat-strengthened aluminum status code is usually followed by the letter T plus add one or more Arabic numerals in the sub-state T T added after 0-10 Arab digital, which means that sub-state (called TX state). T said the figures behind the product heat treatment process. T0 after solution heat treatment, after natural aging through the cold state. Apply to the improvement of the strength of cold products. T1 is cooled by high-temperature molding process and then naturally aging to a substantially stable state. Suitable for cooling the high temperature after the molding process, no longer cold (can be straightening, flattening, but does not affect the mechanical properties of the limit) products. T2 is cooled by the high temperature molding process, the natural aging after cold working to a substantially stable state. After cooling the high temperature applied to the molding process, cold working, or straightening, flattening the product to increase the strength. Cold working after solution heat treatment T3, then, naturally aged to a substantially stable through state. After suitable solution heat treatment, cold working, or straightening, flattening the product to increase the strength. T4 solution heat treatment after natural aging to the basic stability of the state. Applicable to solution heat treatment after cold working is not (can be straightening, flattening, but does not affect the mechanical properties of the limit) products. T5 is cooled by high-temperature molding process, and then the state of artificial aging. After cooling, the temperature suitable for the molding process, not through cold (can be straightening, flattening, but does not affect the mechanical properties of the limit), to be artificial aging products. T6 by the artificial aging after solution heat treatment condition. After solution heat treatment applied by the no longer be cold (can be straightening, flattening, but does not affect the mechanical properties of the limit) products. T7 by the artificial aging after solution heat treatment condition. Apply to the after solution heat treatment to obtain some important characteristics, in the artificial aging, the intensity of the aging curve crossed the peak point of the product. After T8 solution heat treatment after cold working, then the state of artificial aging. Apply to the cold, or straightening, flattening to increase the production of the product strength. T9 artificial aging after solution heat treatment and then cold the state. Apply to the cold improve product strength products. T10 After cooling the high-temperature molding process, cold working, and then the state of artificial aging. Apply to the cold, or straightening, flattening to improve product strength products. T state and TXXX state (eliminate stress state outside) in the TX state code behind to add an Arabic numerals (called TXX state), or add two digits (called TXXX state), which means that after a significant change in product characteristics ( such as mechanical properties, corrosion resistance, etc.) of the state of a particular treatment process. T42 for self O or F state after solution heat treatment, naturally aging to reach a sufficiently stable state of the products, but also applies to any state to be processed side of the product after the heat treatment, the mechanical properties of the product reached the state T42. Since T62 suitable solution heat treatment state O or F, into the artificial aging products, but also applies to any state to be processed side of the product after the heat treatment, the mechanical properties of the product reached the state T62. T73 applies after solution heat treatment, after aging to achieve the required mechanical properties and resistance to stress corrosion products T74 and T73 indicators same state definition. T73 is greater than the tensile strength of the state of the state, but less than the T76 condition. T76 and T73 the same state definition. Tensile strength of the state were higher than T73, T74 status, resistance to stress corrosion cracking performance was lower than T73, T74 state, but its still a good resistance to exfoliation corrosion. T7X2 applicable since the O or F state solution heat treatment, artificial aging treatment, mechanical properties and corrosion resistance reached T7X state product. T81 solution heat treatment applied after the cold deformation by increasing the strength of about 1%, and artificial aging of the product. T87 after solution heat treatment applied by cold deformation around 7% increase in strength, then artificial aging products. Eliminate the stress state in the above TX or TXX or TXXX state code add "51" or "510" or "511" or "52" or "54" indicates that experienced stress relief treatment product status code. TX51 TXX51 TXXX51 applicable to solution heat treatment or cooling from high temperature molding process, the required amount of thick stretched, rolled or cold-finished bar and forging parts, forging ring or ring rolling, stretching these products After no further straightening. Permanent deformation of the plate is 1.5% to 3%; permanent deformation or cold finishing rolling rod is 1% to 3%; permanent deformation forging ring of forging or rolling ring is 1% to 5% . Permanent deformation of the extruded rods, and tubes of 1% to 3%; permanent deformation of the pipe is drawn from 1.5% to 3%. TX511 TXX511 TXXX511 applicable to solution heat treatment or cooling from high temperature molding process, the required amount of stretching of the extruded rods, profiles and pipes, as well as drawing pipe, after which the product may be slightly stretched slightly straightening the line to meet the standards tolerances. TX52 TXX52 TXXX52 suitable solution heat treatment or cooling after high temperature molding process, compression to eliminate stress to produce 1% to 5%, the permanent deformation of the product. TX54 TXX54 TXXX54 applied within the final forging die forging parts to eliminate stress by cold plastic. T6, solution heat treatment (quenching), artificial aging T62, the annealed or F state solution treatment, artificial aging T61 is a special heat treatment, requires its strength below T6. T61, not seen. 2 Edit this paragraph chemical composition of copper Cu: 0.15 ~ 0.4 Mn Mn: 0.15 Mg Mg: 0.8 ~ 1.2 Zinc Zn: 0.25 Chromium Cr: 0.04 ~ 0.35 Ti Ti: 0.15 Si Si: 0.4 ~ 0.8 iron Fe: 0.7 Al Al: I Cover ultimate tensile mechanical properties Edit this paragraph 6061 of 124 MPa yield strength of 55.2 MPa tensile elongation of 25.0% bending elasticity 68.9 GPa ultimate strength of 228 MPa Bending Yield Strength 103 MPa Poisson's ratio 0.330 fatigue strength of 62.1 MPa 4 heat treatment Edit this paragraph rapid thermal annealing process: heating temperature 350 ~ 410 ℃; effective thickness with different materials, the holding time between 30 ~ 120min; air or water. 2) high-temperature annealing: heating temperature 350 ~ 500 ℃; When finished thickness ≥ 6mm, holding time 10 ~ 30min, <6mm, the hot topic so far; air cooling. 3) Annealing: heating temperature 150 ~ 250 ℃; holding time of 2 ~ 3h; air or water. Reminder density 0.0000028 your 6061 5 GB corresponding grades edit this section: 6061 (LD30) GB / T 3190-1996 ISO: AlMg1SiCu ISO 209.1-1989 Japanese standard: A6061 JIS H4000-1999 JIS H4040-1999 Non-standard: 65032 IS 733-2001 IS 737-2001 EN: EN AW-6061/AlMg1SiCu EN 573-3-1994 German standard: AlMgSi1Cu/3.3211 DIN 1725.1-1986/W-Nr French standard: 6061 (A-GSUC) NF A50-411 NF A50-451 British standard: 6061 (N20/H20) BS 1470-1988 American Standard: 6061/A96061 AA / UNS 6 calculated by editing this section aluminum Weight (kg) = 0.0000029 × thickness × width × length units (mm) aluminum Weight (kg) = 0.0000029 × wall thickness × (OD - Wall Thickness) × length units (mm) rod weight formula (kg) = 0.0000029 × radius × radius × length units (mm) 7 spot size Edit this paragraph 6061 Spot specifications sheet: 0.3mm-350mm (thickness) 6061 bar stock specifications: 3.0mm-500mm (diameter) 6061 Wire spot size: 0.1mm-20mm (diameter)