The meaning of aluminum alloy T state is as follows:
The completely stable state of t 1- aluminum after hot working at high temperature and natural aging and cooling. Suitable for hot extrusion materials without cold working, or products whose calibrated mechanical properties are not affected by cold working (such as straightening).
T2—— The state that aluminum material is cold-worked after cooling from high-temperature hot working and then naturally aged. For example, in order to improve the strength, the hot extrusion products can be cold-worked, which can reach a completely stable state through natural aging, and it is also suitable for straightening products that will affect their calibrated mechanical properties.
T3- Cold working after solution treatment and natural aging. Suitable for products whose natural aging strength properties can be improved by cold working after solution treatment, or products whose calibrated mechanical properties can be affected by straightening;
T 3 1- solution heat treatment, cold working with monthly deformation 1%, and then natural aging;
T35 1-solution heat treatment, stress is relieved by controllable stretching amount (permanent deformation of thin plate is 0.5% ~ 3.0%, thick plate is 1.5% ~ 3%, cold working of bar is 1% ~ 3%, and hand forging or ring forging is permanent deformation. Not straightened after stretching; T35 10-solid solution heat treatment is used to relieve the stress of extruded materials through controllable stretching amount (the permanent deformation of extruded pipes, bars and profiles is 1% ~ 3%, and the permanent deformation of stretched pipes is 0.5% ~ 3%), and then natural aging is carried out. Not straightened after stretching;
T 35 1 1- is the same as T35 10, but the mirror is straightened after stretching, reaching the dimensional deviation accuracy specified in the standard;
T352-solution heat treatment, compression permanent deformation of 65438 0% ~ 5% to relieve stress, and then natural aging; T354-solid solution heat treatment, cold shaping in fine die to relieve stress, and then natural aging, suitable for die forgings;
T36- solution heat treatment, cold working with about 6% deformation, and then natural aging;
T37- solution heat treatment, cold working with about 7% deformation, and then natural aging;
T39- Solution heat treatment, appropriate cold working deformation to meet the established mechanical properties requirements, cold working can be carried out before or after natural aging.
T4- Solution heat treatment and natural aging.
T 4 1- hot water quenching to prevent deformation and thermal stress, used for forgings;
T42- solution heat treatment and natural aging, suitable for self-annealing or F-state experimental materials, and also suitable for users to carry out solution heat treatment and natural aging on materials in any state;
T45 1-solution heat treatment, through a certain amount of stretching to relieve stress (permanent deformation of thin plate is 0.5% ~ 3.0%, permanent deformation of thick plate is 1.5% ~ 3%, bar rolling is equivalent to cold working, and permanent deformation of free forgings, ring forgings and rolling rings is 1% ~ 5. No further straightening is allowed after stretching;
T45 10-solution heat treatment, a certain amount of stretching to relieve stress (the permanent deformation of extruded pipes, bars and profiles is 1% ~ 3%, and the permanent deformation of drawn pipes is 0.5% ~ 3%), then natural aging, and no further straightening is allowed after stretching;
T 45 1 1- is the same as T45 10, but the mirror is straightened after stretching, reaching the dimensional deviation accuracy specified in the standard;
T452-solution heat treatment, compression permanent deformation 1% ~ 5% to relieve stress, and then natural aging; T454-solid solution heat treatment, cold shaping in fine die to relieve stress, and then natural aging, suitable for die forgings;
T5- cooling from hot working temperature before artificial aging.
T5 1-After cooling from hot working temperature, artificial aging treatment is carried out to improve formability;
T56-artificial aging after cooling from hot working temperature, but its mechanical properties are higher than T5 state, which is realized by special control of processing technology and is suitable for 6xxx series alloys.
T6- solution heat treatment, and then artificial aging.
T 6 1- solution heat treatment, and then artificial aging to improve formability;
T 6 15 1- solution heat treatment, a certain amount of stretching to relieve stress (permanent deformation of thin plate is 0.5% ~ 3.0%, and thick plate is 1.5% ~ 3%), and then artificial aging is needed to improve formability, and further straightening is not allowed after stretching;
T62- solution heat treatment and artificial aging, suitable for self-annealing or F-state solution treatment of experimental materials, or users will heat treat materials in any state;
T64- Solution heat treatment, and then artificial aging to improve formability. The properties of the material in this state are between T6 state and T6 1 state.
T65 1-solution heat treatment, stretching a certain amount to relieve stress (permanent deformation of thin plate is 0.5% ~ 3.0%, permanent deformation of thick plate is 1.5% ~ 3%, bar rolling or cold finishing rolling is equivalent, and permanent deformation of free forgings, ring forgings and rolling rings is 1% ~ 5%. T65 10-solution heat treatment, stretching a certain amount to relieve stress (the permanent deformation of extruded pipes, bars and profiles is 1% ~ 3%, and the permanent deformation of drawn pipes is 0.5% ~ 3%), then artificial aging, and the material will not be further straightened after stretching;
T 65 1 1- is the same as T65 10, but after stretching, the mirror surface is straightened to meet the dimensional deviation accuracy specified in the standard;
T652-solution heat treatment, in which 1% ~ 5% permanent deformation is generated by pressure release stress, and then artificial aging is performed;
T654-solid solution heat treatment, cold shaping in fine die to relieve stress, and then artificial aging, suitable for die forgings;
T66- solution heat treatment, and then artificial aging. Through special control of the process, the mechanical properties of the material in this state are higher than those in T6 state (applicable to 6xxx series alloys), and the quantity is determined by both parties.
T7- solution heat treatment, and then artificial aging.
T73- solution heat treatment, and then artificial aging treatment until the material has the best stress corrosion resistance; T732-solution heat treatment, and then artificial aging treatment until the material has the best stress corrosion resistance; Suitable for self-annealing or F-state solid solution treatment of experimental materials, but also suitable for users to heat treat materials in any state;
T735 1-solution heat treatment, stretching a certain amount to relieve stress (permanent deformation of thin plate is 0.5% ~ 3.0%, permanent deformation of thick plate is 1.5% ~ 3%, bar rolling is equivalent to cold working, and permanent deformation of free forgings, ring forgings and rolling rings is 1% ~.
T735 10-solid solution heat treatment, stretching a certain amount to eliminate stress (the permanent deformation of extruded pipes, bars and profiles is 1% ~ 3%, and the permanent deformation of drawn pipes is 0.5% ~ 3%), and then artificially aging until the material has the best stress corrosion resistance, and the stretched product will not be further straightened;
T 735 1 1- is the same as T735 10, but the mirror is straightened after stretching, which meets the dimensional deviation accuracy specified in the standard;
T7352-solution heat treatment, in which the stress is relieved by pressure generation 1% ~ 5% permanent deformation, and then artificial aging is carried out until the material has the best stress corrosion resistance;
T7354-solution heat treatment, cold shaping in fine die to eliminate stress, and then artificial aging until the product has the best stress corrosion resistance;
T74-solution heat treatment, and then artificial aging, so that the material properties are between T73 state and T76 state;
T745 1-solution heat treatment, stretching a certain amount to relieve stress (thin plate permanent deformation 0.5% ~ 3.0%, thick plate permanent deformation 1.5% ~ 3%, bar rolling permanent deformation or cold finishing, free forging, ring forging, ring rolling 1% ~ 5).
T745 10-solution heat treatment, stretching a certain amount to relieve stress (the permanent deformation of extruded pipes, bars and profiles is 1% ~ 3%, and the permanent deformation of drawn pipes is 0.5% ~ 3%), and then artificial aging is carried out until the performance of the material is between T73 and T76, and the material will not be damaged after stretching. T 745 1 1- is the same as T745 10, but the mirror is straightened after stretching, meeting the dimensional deviation specified in the standard;
T7452-solution heat treatment, which produces permanent deformation of 1% ~ 5% by pressure, and then artificially ages the material until its properties are between T73 and T76;
T 7454—— solution heat treatment, cold shaping in fine die to relieve stress, and then artificial aging until the material properties are between T73 and T76, which is suitable for die forgings;
T76- solution heat treatment, and then artificial aging to make the material have good spalling corrosion resistance; T76 1-solid solution heat treatment, and then artificial aging make the material have good peeling corrosion resistance, which is suitable for 7475 alloy plate and strip;
T762-solid solution heat treatment, and then artificial aging treatment, making it an experimental material with good spalling corrosion resistance, suitable for self-annealing or F-state heat treatment. It also refers to the state of the material after re-heat treatment by the user in any state;
T765 1-solution heat treatment, stretching a certain amount to relieve stress (permanent deformation of thin plate is 0.5% ~ 3.0%, permanent deformation of thick plate is 1.5% ~ 3%, rolled or cold-worked bar is 1% ~ 3%, and hand forgings, ring forgings and rolling rings are 65433%.
T765 10-solution heat treatment, stretching a certain amount to relieve stress (the permanent deformation of extruded pipes, bars and profiles is 1% ~ 3%, and the permanent deformation of drawn pipes is 0.5% ~ 3%), and then artificially aging until the material has good peeling corrosion resistance, and straightening is not allowed after stretching;
T 765 1 1- is the same as T765 10, but the mirror is straightened after stretching, which meets the dimensional deviation accuracy specified in the standard;
T7652-solid solution heat treatment, permanent deformation of 1% ~ 5% is produced by pressing, and then artificial aging is carried out until the material has good spalling corrosion resistance;
T7654-solid solution heat treatment, cold shaping in fine die to relieve stress, and then artificial aging treatment to achieve good spalling corrosion resistance of materials, suitable for die forgings;
T79- solution heat treatment, and then slightly artificial aging;
T795 10-solid solution heat treatment, stretching a certain amount to relieve stress (the permanent deformation of extruded pipes, bars and profiles is 1% ~ 3%, and the permanent deformation of drawn pipes is 0.5% ~ 3%), then slightly artificial aging, and straightening is not allowed after stretching;
T 795 1 1- is the same as T795 10, but after stretching, mirror straightening is carried out to meet the dimensional deviation accuracy specified in the standard.
T8- Solution heat treatment, cold working and artificial aging.
T 8 1- solid solution heat treatment, cold working, deformation of about 1%, and then artificial aging;
T82- The user carries out solution heat treatment, stretching and straightening with a minimum permanent deformation of 2%, and then artificial aging, which is suitable for 8090 alloy;
T832-solution heat treatment, cold working to a specific permanent deformation rate, and then artificial aging, suitable for drawing 6063 alloy pipe;
T84 1-solid solution heat treatment, cold working and artificial aging are suitable for 209 1 and 8090 alloy plates and strips;
T 84 15 1- solid solution heat treatment, tensile permanent deformation 1.5% ~ 3% to relieve stress, and then artificial aging, suitable for 209 1 and 8090 alloy thick plates;
T85 1-solution heat treatment, stretching a certain amount to relieve stress (the permanent deformation of thin plate is 0.5% ~ 3.0%, that of thick plate is 1.5% ~ 3%, that of rolled or cold-worked bar is 1% ~ 3%, and that of hand forgings and ring forgings is 65438+.
T85 10-solution heat treatment, stretching a certain amount to relieve stress (the permanent deformation of extruded pipes, bars and profiles is 1% ~ 3%, and the permanent deformation of drawn pipes is 0.5% ~ 3%), then artificial aging, and straightening is not allowed after stretching;
T 85 1 1- has the state of T85 10, but the mirror is straightened after stretching, which meets the dimensional deviation accuracy specified in the standard;
T852-solution heat treatment, in which the permanent deformation of the material is 1% ~ 5% by pressing, and then artificial aging is carried out;
T854-solution heat treatment, cold shaping in fine die to relieve stress, and then artificial aging, suitable for die forgings;
T86- solution heat treatment, cold deformation of about 6% is produced by cold working, and then artificial aging is carried out; T87- solid solution heat treatment, cold working produces about 7% cold deformation, and then artificial aging;
T89- Solution heat treatment, cold working to obtain the required appropriate mechanical properties, and then artificial aging; T9- Solution heat treatment, artificial aging, and then cold working. Suitable for materials that have been cold-worked to improve strength.
T 10- after cooling in the high-temperature forming process, it is cold-worked and then artificially aged. Suitable for materials whose strength can be improved by cold working, stretching and straightening.
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