State code of deformed aluminum alloy
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發布日期:2014-09-25
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作者:佚名
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State code of processed deformed aluminum alloy1. rangeThis standard specifies the status code of the deformed aluminum alloy.This standard applies to aluminum and aluminum processed product..........

State code of processed deformed aluminum alloy

1. range

This standard specifies the status code of the deformed aluminum alloy.

This standard applies to aluminum and aluminum processed products.

2. The basic principle

2.1 The basic status code is represented by an English capital letter.

2.2 The subdivision status code is represented by a base status code followed by one or more digits.

2.3 Basic status code

The basic state is divided into five types, as shown in the expression


Code

name

Description and application

F

Free machining state

Applicable to products with special requirements for work hardening and heat treatment conditions during the molding process, the mechanical properties of the product are not specified.

O

Annealed state

Suitable for processed products that have been fully annealed for lowest strength

H

Work hardening state

Applicable to products that increase strength by work hardening. The product can be subjected to additional heat treatment after the work hardening can be passed (or not) to reduce the strength. The H code is followed by two or three Arabic numerals.

W

Solid solution heat treatment state

An unstable state, only applicable to alloys that are naturally aged at room temperature after solution heat treatment. This state code only indicates that the product is in the natural aging stage.

T

Heat treatment state (different from F, O, H state)

Applicable to products that have been stabilized after (or without) work hardening after heat treatment. The T code must be followed by one or more Arabic digits.

3. Segmentation status code

. 1 H subdivision status

   Add a two-digit Arabic number (called the HXX state) after the letter H, or three Arabic numerals (called the HXXX state) to indicate the subdivision state of H.

. 1.1 HXX status

. 1.1.1 The first digit after H indicates the basic handler for this state, as shown below:

   H1—Simple work hardening treatment state. It is suitable for the state where the required strength is obtained only by work hardening without additional heat treatment.

   H2—The state of work hardening and incomplete annealing. It is suitable for products that have been subjected to incomplete annealing after the degree of work hardening exceeds the requirements of the finished product, so that the strength is reduced to the specified index. For alloys that naturally soften at room temperature, H2 has the same minimum ultimate tensile strength value as the corresponding H3; for other alloys, H2 has the same minimum ultimate tensile strength value as the corresponding H1, but the elongation is slightly higher than H1. .

   H3—The state of work hardening and stabilization treatment. It is suitable for products which are heat treated after work hardening or whose mechanical properties are stabilized due to heat during processing. The H3 state is only applicable to alloys that gradually age soften at room temperature (unless stabilized).

   H4—The state of work hardening and painting treatment. Applicable to work hardening, after painting, resulting in incompletely annealed products.

3.1.1.2 The second digit after H indicates the degree of work hardening of the product. The number 8 indicates a hard state. The minimum tensile strength of HX8 is usually specified by the sum of the minimum tensile strength of the O state and the difference in strength specified in Table 2. For the state between the O (annealing) and HX8 states, a number from 1 to 7 should be added after the HX code to indicate that adding a number 9 after HX indicates a harder state than the HX8 work hardening degree, various The HXX subdivision status code and the corresponding degree of work hardening are shown in Table 3:


Table 2 Minimum tensile strength difference between HX8 state and O state

Minimum tensile strength of O state / Mpa

Minimum tensile strength difference between HX8 state and O state / Mpa

≤40 
      45~60 
      65~80 
      85~100 
      105~120 
      125~160 
      165~200 
      205~240 
      245~280 
      285~320 
      ≥325

      55 
      65 
      75 
      85 
      90 
      95 
      100 
      105 
      110 
      115 
      120

Table 3 HXY subdivision status code and degree of work hardening

Segmentation status code

Degree of work hardening

HX1

The tensile strength limit is the intermediate value between the O and HX2 states.

HX2

The tensile strength limit is the intermediate value between the O and HX4 states.

HX3

The tensile strength limit is the intermediate value of the HX2 and HX4 states.

HX4

The tensile strength limit is the intermediate value between the O and HX8 states.

HX5

The tensile strength limit is the intermediate value of the HX4 and HX6 states.

HX6

The tensile strength limit is the intermediate value of the HX4 and HX8 states.

HX7

The tensile strength limit is the intermediate value of the HX6 and HX8 states.

HX8

Hard state

HX9

The minimum tensile strength limit value in the superhard state is at least 10Mpa in the HX8 state.

Note: The tensile strength values of the HX1~HX9 states determined by the above table do not end with 0 or 5.

       It should be rounded to an adjacent larger value ending in 0 or 5.

3.1.2 HXXX status

The HXXX status code is as follows:

a) H111

It is suitable for products that have been subjected to an appropriate amount of work hardening after final annealing but have a degree of work hardening that is inferior to the H11 state.

b) H112

Suitable for hot forming products. The mechanical properties of the product in this state have specified requirements.

c) H116

Suitable for products made of 5XXX series alloy with magnesium content ≥4.0%. These products have specified mechanical properties and resistance to flaking corrosion.

d) State code of the tread plate

The state code of the tread plate and its corresponding plate state code before embossing are shown in Table 4:

Table 4 Comparison of the state code of the tread plate and the plate before embossing


State code of the tread plate

Plate status code before embossing


H114

O

H124
   H224
   H324

H11
   H21
   H31

H134
   H234
   H334

H12
   H22
   H32

H144
   H244
   H344

H13
   H23
   H33

H154
   H254
   H354

H14
   H24
   H34

H164
   H264
   H364

H15
   H25
   H35

H174
   H274
   H374

H16
   H26
   H36

H184
   H284
   H384

H17
   H27
   H37

H194
   H294
   H394

H18
   H28
   H38

H195
   H295
   H395

H19
   H29
   H39

 

3.2T subdivision status

Add one or more Arabic digits after the letter T to indicate the subdivision status of T.

3.2.1 TX status

Adding an Arabic numeral of 0 to 10 after T indicates that the subdivision state (referred to as the TX state) is as shown in Table 5. The number after T indicates the teacup handling procedure for the product.

Table 5 TX subdivision status code description and application


Status code

TO

After solution heat treatment, it passes through the state of cold working through natural aging.

Suitable for products that have been cold worked to increase strength

T1

It is cooled by a high temperature molding process and then naturally aged to a substantially stable state.

It is suitable for products that are not cooled after being cooled by the high temperature forming process (straightening and leveling, but not affecting the limit of mechanical properties).

T2

It is cooled by a high-temperature molding process and naturally aged to a substantially stable state after cold working. Suitable for products that are cooled by high temperature forming processes, cold worked, or straightened, leveled to increase strength

T3

After solution heat treatment, it is cold worked, and then naturally aged to a substantially stable state. Suitable for products that are cold worked, or straightened and leveled to improve strength after solution heat treatment

T4

After solution heat treatment, it is naturally aged to a substantially stable state. Applicable to products that are not subjected to cold working after solution heat treatment (straightening and leveling, but not affecting the limit of mechanical properties)

T5

It is cooled by a high temperature molding process and then subjected to artificial aging.

    It is suitable for products that are artificially aged after being cooled by a high-temperature molding process without cold working (straightening and leveling, but not affecting the limit of mechanical properties).

T6

A state of artificial aging after heat treatment by solution heat treatment.

    Applicable to products that are not subjected to cold working after solution heat treatment (straightening and leveling, but not affecting the limit of mechanical properties).

T7

A state of artificial aging after heat treatment by solution heat treatment.

    Applicable to products that have acquired the important peak characteristics after solid solution heat treatment, and the strength exceeds the highest peak point on the aging curve during artificial aging.

T8

After solution heat treatment, it is cold worked and then subjected to artificial aging.

    Applicable to cold-worked, or straightened, leveled to improve product strength.

T9

The solution is artificially aged after solution heat treatment, and then subjected to cold working.

    Suitable for products that have been cold worked to increase the strength of the product.

T1O

After being cooled by the high-temperature molding process, it is subjected to cold working and then subjected to artificial aging.

    Suitable for products that have been cold worked, or straightened, leveled to increase product strength.

Note: Some 6XXX alloys, whether in the furnace solution heat treatment or quenching from the high temperature forming process to retain the soluble components in the solid solution, can achieve the same solution heat treatment effect, T3, T4, T6, The T7, T8 and T9 states may be any of the above two treatment methods.

3.2.2 T state and TXXX state (except stress relief state)

Adding an Arabic digit (called the TXX state) after the TX status code, or adding two Arabic numerals (called the TXXX state), indicates that the product characteristics (such as mechanical properties, corrosion resistance, etc.) have changed significantly. The state of the process is shown in Table 6.

Table 6TXX and TXXX subdivision status code description and application


Status code

Description and application

T42

It is suitable for products with natural aging to achieve sufficient stability after solution heat treatment in O or F state. It is also suitable for products with mechanical properties reaching T42 after heat treatment of processed products in any state.

T62

Applicable to products that have entered artificial aging after O- or F-state solution heat treatment, and are also suitable for products with mechanical properties up to T62 after heat treatment of processed products in any state.

T73

Applicable to products with aging after the solution heat treatment to achieve the specified mechanical properties and stress corrosion resistance

T74

Same as the T73 state definition. The tensile strength of this state is greater than the T73 state, but less than the T76 state.

T76

Same as the T73 state definition. The tensile strength of this state is higher than that of T73 and T74, respectively. The stress corrosion cracking resistance is lower than that of T73 and T74, respectively, but its anti-flaking corrosion performance is still good.

T7X2

Applicable to products with artificial aging treatment after solid solution heat treatment in O or F state, mechanical properties and corrosion resistance up to T7X state

T81

Applicable to solid solution heat treatment, after 1% cold work deformation to increase strength, and then artificial aging products

T87

Applicable to solid solution heat treatment, after 7% or so of cold work deformation to increase strength, and then artificial aging products

3.2.3 Stress relief state

Adding "51", or "510", or "511" or "52" or "54" after the above TX or TXX or TXXX status code indicates the product status code that has undergone stress relief processing, as shown in Table 7.

Table 7 Description and application of stress relief status code


Status code

Description and application

TX51
   TXX51
   TXXX51

Suitable for solution heat treatment or thick plate, rolled or cold-finished bar and die forging, forging ring or rolling ring which are stretched according to the specified amount after cooling from high temperature forming process. These products are no longer stretched after stretching. Straighten.

    The permanent deformation of the thick plate is 1.5%~3%; the permanent deformation of the rolled or cold finished bar is 1%~3%; the permanent deformation of the forging ring or rolling ring of the die forging is 1%~5%

TX510
   TXX510
   TXXX510

Suitable for solution heat treatment or extrusion rods, pipes and pipes which are stretched in a specified amount after cooling from a high temperature forming process, and drawn pipes, which are not straightened after stretching.

    The permanent deformation of the extruded rod, type and tube is 1%~3%; the permanent deformation of the drawn tube is 1.5%~3%

TX511
   TXX511
   TXXX511

Suitable for solution heat treatment or extrusion rods, profiles and tubes which are stretched according to the specified amount after cooling from high temperature forming process, and drawn pipes. These products can be straightened to meet the standard tolerance after stretching.

    The permanent deformation of the extruded rod, type and tube is 1%~3%; the permanent deformation of the drawn tube is 1.5%~3%

TX52
   TXX52
   TXXX52

Suitable for solution heat treatment or after cooling from high temperature forming process, stress is eliminated by compression to produce 1%~5%, permanent deformation product

TX54
   TXX54
   TXXX54

Suitable for die forgings that are relieved by cold shaping in a final forging die

4.3W stress relief state

As with T's stress-relieving state code representation, the same number (51, 52, 54) can be added after the W-state code to indicate unstable solution heat treatment and stress relief.


Appendix A (Appendix to the tip)

    The new code corresponding to the original status code

Old code

New code

Old code

New code


M

R

Y

Y1

Y2

Y4

T

CZ

CS

O

H112,F

HX8

HX6

HX4

HX2

HX9

T4

T6

CYS

CZY

CSY

MCS

MCZ

CGS1

CGS2

CGS3

RCS

TX51、TX52Wait

T0

T9

T62

T42
      T73
      T76

T74

T5

Note: The products that are delivered in the R state and provide the performance of CZ and CS samples can be respectively corresponding to the new code.T62、T42。

Note: The products that were originally delivered in the R state and provided the performance of CZ and CS samples can correspond to the new codes T62 and T42 respectively.
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