Some standard content:
GB8544-1997
This standard adopts the latest alloy grades and state codes formulated in my country. The mechanical properties and thickness tolerances of cold-rolled strips in this standard are equivalent to those of JIS H4000-88.
The new version has major changes in the following contents: - The name of the standard has changed from "Aluminum and Aluminum Alloy Strips" to "Aluminum and Aluminum Alloy Cold-Rolled Strips"; - This standard is compiled in accordance with GB/T1.1-1993. "Foreword" is added, and three chapters, "Scope", "Cited Standards" and "Contract Contents" are added. Chapter 1 of the original standard, "Varieties", is cancelled according to the requirements of GB/T1.1, and its contents are merged into the various articles of Chapter 4 "Requirements" of this standard.
The grades, states and specifications are reclassified according to the alloy series, which are divided into 1××× series, 2××× series, 3××× series, 5××× series and 6×Xx series.
Mechanical properties: The A and B grades are cancelled, and the strip is completely equivalent to JIS H4000-88; —- The specimens for room temperature tensile test of strips are the specimens specified in the new national standard GB/T16865--1997; ...: The "Recommended Dimensions of Strip Coils" are added, and the strip width, strip coils with sleeves, without sleeves, and specific requirements for the outer diameter of the coils are classified; — The uniformity of the end surface of the strip coil is refined into the requirements of string layers and tower shapes; — The surface quality stipulates that the strip is a rolled surface, which should be well processed, uniform in texture, and should not have serious defects; users can have special requirements for the surface of the strip, but they must be indicated in the contract. This standard replaces GB854487 from the date of entry into force. This standard was proposed by China Nonferrous Metals Industry Corporation. This standard was issued by China Nonferrous Metals Industry Corporation Standard Metrology Institute. The main drafting unit of this standard: Northeast Light Metal Processing Plant. The main drafters of this standard: Nie Junyi, Chen Xingli, Huang Yongqing, Wang Tao, Zhang Hua. 1 Scope
National Standard of the People's Republic of China
Aluminum and aluminum alloy cold rolled strip
Aluminum and aluminum alloy cold rolled stripGB/T 8544
Replaces GB854487
This standard specifies the contract content, requirements, test methods, inspection rules and marking, packaging, transportation, storage of aluminum and aluminum alloy cold rolled strip.
This standard applies to aluminum and aluminum alloy cold rolled strip for general use (hereinafter referred to as strip); it does not apply to aluminum and aluminum alloy cold rolled strip with special requirements such as deep drawing, painting and PS plate substrate. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. At the time of publication of this standard, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB228-87 Metal tensile test method
(: B6987-86 Aluminum and lead alloy chemical analysis method (B/T3190-1996 Deformed aluminum and aluminum alloy chemical composition GB/T3199--1996 Aluminum and aluminum alloy processing products packaging, marking, transportation, storage GB/T 16865---1997
Deformed aluminum, magnesium and their alloy processing products tensile test specimens 3 Contract content
The contract for ordering materials listed in this standard shall include the following contents: 3.1 Product name;
3.2 Brand:
3.3 State;
3.4 Thickness, width, inner diameter;
3.5 Set material and specifications;
3.6 Weight;
3.7 This standard number, year; ||t t||3.8 Special requirements.
4 Requirements
4.1 Product classification
4.1.1 Brand, state, specification
4.1.1.1 The brand, state and specification of the strip shall comply with the provisions of Table 1. Approved by the State Administration of Technical Supervision on June 16, 1997, implemented on December 1, 1997
1070.1050
1100, 1200
2017, 2024
3003,3 004
GB/T 8544
H12、H22
H14、H24
H16、H26
Grade, state and specification
>0. 2~6. 0
>0. 2～3. 5
20. 2～~3. 0
0.H12、H22、H14、H24、
H16、H26、H18、H19
0、H14、H16、H12、H18
H12.H22、H32
H14、H24,H34.H16
H26.H36、H18.H19
H18.H38、H19.H39
0、H22、H32
Note: When other brands, states and specifications are required, it shall be decided by negotiation between the supply and demand parties. 4.1.1.2 For the recommended coil dimensions, see Table 220. 2 ~3. 0
0. 2 ~ 3. 0
>0. 2~～6. 0
>0. 2～~4. 0
≥0.2~3. 0
>0. 2~3. 0
>0. 2～0. 5
0.5～3.0
0. 4～6. 0
Recommended coil dimensions
60~2 300
With sleeve
Other inner diameter specifications shall be negotiated between the supplier and the buyer. 2The material and specifications of the sleeve shall be specified in the contract. Inner
Without sleeve
Grid, mm
602300
60~1500
60～2000
60~2000
60-2000
60-~1500
60~-1500
Negotiation between the supplier and the buyer
4.1.2 Marking example
The strip made of 1070 alloy, H14 state, thickness of 1.0mm, width of 1200mm is marked as: Strip 1070-H141.0X1200 GB/T8544—19974.2 Chemical composition
GB/T 8544--1997
4.2.1 The chemical composition of the strip shall comply with the provisions of the corresponding alloy grade in GB/T3190. 4.2.2 The strip used to make food containers shall be marked as "edible" in the contract, and the content of each element of lead, cadmium and arsenic shall not exceed 0.01%.
4.3 Allowable Deviation of Size
4.3.1 The allowable deviation of the thickness of strips of 1070, 1060, 1050, 1100, 1200, 3003, 3105, 5005 shall comply with the provisions of Table 3. Table 3 Allowable Deviation of the Thickness of Strips of 1070, 1060, 1050, 1100, 1200, 3003, 3105, 5005
≥0. 20 ~~0. 25
20. 25~ 0. 45
>0. 45~0. 70
>0. 70~ 0. 90
0. 90~1. 10
≥1. 10 ~1. 70
1. 70~1. 99
1. 90~2. 40
>2.40~2.70
>2. 70~3. 60
>3.60~4.50
4.50~5.00
25. 00 ~6. 00
>450～900
≥900～1400
When the thickness tolerance is only positive or negative, the tolerance is twice the value in the table. The dimensions and tolerances other than the specified thickness and width shall be determined by negotiation between the supplier and the buyer. 21400～1 800
≥1 800~2 300
22017, 2024, 3004, 5052, 5082, 5083, 6061 The thickness tolerance of strips shall comply with the provisions of Table 4. 4.3.2
Table 42017, 2024, 3004, 5052, 5082, 5083, 6061 Thickness tolerance width
>0. 20~0. 25
>0. 25~0. 45
>0. 45~0. 70
>0.70~0.90
≥0. 90~1.10
1. 10~~1. 70
>1. 70~1. 90
1. 90~2. 40
>2. 40~2.70
2. 70 ~3. 20
3. 20~-3. 60
450~900
>900~1400
1≥1 400~1800
allowable deviation
1 800-~2 300||tt ||>3.60~~4.50
24. 50-5. 00
>5. 00~-6. 00
GB/T8544-1997
Table 4 (end)
≥450～900
>900～1 400
Allowable deviation||tt ||When the thickness tolerance is only positive or negative, the tolerance is twice the value in the table. 2 Dimensions and tolerances other than the specified thickness and width shall be determined by negotiation between the supplier and the buyer. 4.3.3||tt ||The allowable deviation of the width of the trimmed strip shall comply with the provisions of Table 5. Table 5 Permissible deviation of trimmed strip width
≥300~600
>600～1 200
1 400～1800
1800-2300
3. 2--6. 0
Width allowable deviation
When the width allowable deviation is only positive or negative, the allowable value is twice the value in the table. 2 Uncut edge supply When the goods are delivered, it should be indicated in the contract, and the allowable width deviation shall be negotiated by the supply and demand parties. 4.4 Mechanical properties
The room temperature tensile test results of the strip shall comply with the requirements of Table 6 Table 6 Room temperature tensile properties requirements of the strip
H12 or H22
0. 2～0 . 3
>0.3~～0.5
>0. 5~0.8
>0. 8～1, 3
>1. 3~-6. 0
0. 2~0. 3
>0. 3~ 0. 5
≥0. 5~-0. 8
>0. 8- 1 . 3
>1.3～2. 9
2. 9~4. 5
Tensile strength
70~-110
Specified non-proportional
Elongation stress
Elongation ratio valley
(50 mm)
H14 or H24
H16 or H26
H12 or H22
H14 or H24
H16 or H26
GB/T 8544--1997
Table 6 (continued)
>0. 2~0. 3
≥>0. 3~ 0. 5
>0. 5 ~0. 8
>0. 8~1.3
>1. 3~2. 9
>2.9~~4.0
>0. 2~0. 5
>0. 5~-0. 8
>0.8~1. 3| |tt||1. 3~3. 0
>0.2~0. 5
>0. 5~0.8
≥1. 3~~1. 5
>0. 2 ~ 0. 5
>0. 5~~0. 8
1 . 3~6. 0
>0. 2~0. 3
>0. 3~0. 5
>0. 5~0. 8
>0. 8~1. 3
>1. 3~2. 9
>2. 9~~4. 5
>0. 2~~0. 3
>0. 3 ~0. 5
0. 5~0. 8
>0.8～1.3
>1. 3~ 2. 9
0. 5~0. 8
≥0. 8~1. 3
>1. 3~~ 3. 0
>0. 2~ 0. 5
>0. 5~0.8
>0. 8~1. 3
>1. 3~1.5
Tensile strength α
85~120
100~～135
60~100
80~~120||tt| |95~125
120145
Specified non-proportional
Elongation stress m
Elongation
(50 nim)
H12 or H22
H14 or H24
H16 or H26
H12 or H22
GB/T 8544—1997
Table 6 (continued)||tt ||>0. 2~0. 5
2>0. 8~1. 3
21. 3~6. 0
0. 2～0. 3
>0. 3~~0. 5
>0. 5 ~ 0 . 8
>0. 8~1. 3
>1. 3~2. 9
>2.9~4. 5
>0. 2 ~0. 3
>0. 3~ 0. 5
>0, 5 ~0. 8
>0. 8~ 1. 3
>1. 3~~2. 9
>2. 9~4. 0
0. 2~0. 5
>0. 5~~0, 8
>0.8~1. 3
>1. 3~3. 0
>0. 2 ~ 0. 5
>0. 5~0.8| |tt||>0. 8~1. 3
>1. 3~1. 5
>0. 5 ~~ 6. 0
0. 4～0.5
>0. 5~6. 0
>0. 2 ~ 0. 3
>0. 3~~0. 8
>0.8~1. 3
>1. 3~6. 0
>0. 2~0. 3
≥0. 3~0. 5
0. 5~ 0. 8
>0.8～1.3
>1.3~2. 9
2. 9~4. 5
Tensile strength
75~110
95～125
120~145
135~165
95~125
120~ 155
Specified non-proportional
elongation stress
≥120
≥120
elongation ratio
(50mm）|| tt||H14 or H24
H16 or H26
H12 or H32
H14 or H34
H16 or H36
H18 or H38
H12 or H22
GB/T 8544—1997
Table 6 (continued)
0. 2-~0. 3
>0.3~~0. 5
>0. 5~0. 8
>0. 8~~1. 3
>1. 3~2. 9
>2. 9 ~4. 0
>0. 2 ~0.5
>0.5~0.8
≥1.3～3. 0
>0. 2～0. 5
>0. 5~0.8
>0. 81. 3
>1, 3~1. 5
>0. 2~0. 5
>0. 5~0. 8
≥0. 8~~1. 3
>1. 3~6. 0
>0. 5~0. 8
>0. 8~~1. 3
>1. 3～4. 5
>0. 2 ~0. 5
>0. 5 ~0. 8
>0. 8~1.3
>1. 3~4. 0
>0. 2~0. 5
>0. 5~0. 8
≥0. 8~1. 3
>1. 3~~3. 0
>0. 2~~0. 5
>0. 2~0. 5
0. 5~0. 8
>0. 8~1.3
>1. 3~3. 0
≥0.3~0.8
>0.8~-1. 6
Tensile strength α6
135~175
165~205
≥185
155~195||tt ||195~245
225~265
245285
95~145
125~175
Regulations Non-proportional
elongation stress.
≥120
≥165
≥165
≥145
≥145|| tt||≥175
≥195
≥195
2≥215
≥110
Elongation
(30 mm)
H14 or H24
H16 or H26
or H22
or H24
or H26
H18 or H38||tt ||or H22
—1997
GB/T 8544
Table 6 (continued)
22 0. 3~~0. 8
> 0.8~~1.6
220.3~0.8
>0.8～~1.6
0.8～1.6
≥0.5~0.8
≥1 . 3~~2. 9
22. 9~6. 0
≥0. 5～0. 8
>0. 8~1. 3
>1.3～2. 9
>2, 9~4. 0
≥0.5~0.8
≥0. 8～1. 3
>1. 3～2. 9
>2. 9~4. 0
≥0.5~0.8
>1.3~4. 0
≥0.5~0.8
≥0 . 8~~1. 3
>1. 3~3. 0
>0. 2~~0. 3
>0. 5~0. 8
20. 8~-1. 3
>1. 3～2. 9
>2. 9～ 4. 5
>0. 2 ~0. 3
>0. 5~0. 8
>0. 8~-1. 3
>1. 3~~2. 9
Tensile strength
155~～195
175~225
110-115
120~155
135～175
155~~195
≥175
175215
215~265
Specify non-proportional
long stress.||tt ||≥110
Buddha length rate.
(s0 mm)
or H24
or H26, H36
H19, H39
H19, H39
H22 or H32| |tt||GB/T8544—-1997
Table 6 (End)
2>0. 2~ 0. 5
>0. 5~0. 8
≥0. 8~1. 3
>1. 3~2. 9
≥2. 9~4. 0
>0.2~0. 8
>0. 8~4. 0
>0. 2~~0. 8
>0.8~3. 0
>0. 2~0. 5
>0. 2~0. 5
≥0. 5~0. 8
≥0.8～4. 0
20. 5~0. 8
>0. 8～2. 9
>0. 5~2. 9
Tensile strength
235~285
255~305
≥275
≥335
≥355||tt| |275~355
315～375
315~375
305~380
Specified non-proportional
Elongation stress po.2||tt ||235~305
215~295
Elongationwww.bzxz.net
(50 mm)
For the room temperature tensile performance requirements not specified in the table, the purchaser requires When conducting tensile tests, the supplier and the buyer shall negotiate and decide, and specify it in the contract. 2 The upper limit of tensile strength and the specified non-proportional elongation stress do not apply to strips in conditions H22, H24, and H26. 4.5 Surface quality
4.5.1 The surface of the strip is a rolled surface and should be processed Good. Uniform texture. No serious scratches, metal or non-metallic indentations, etc. 4.5.2 If there are any special requirements for the strip surface, they should be stated in the contract. 4.6 Other requirements
4.6.1 When the thickness is less than or equal to 1.5mm and the outer diameter of the roll is greater than 1000mm, each roll is allowed to have two joints. When the thickness is greater than 1.5mm and the outer diameter of the roll is greater than 1000mm, each roll is allowed to have one joint. The joints must be clearly marked. 4.6.2 The end face of the trimmed strip should be neat, without burrs or cracks; the thickness of the layer should not be greater than 5mm, and the tower shape should not be greater than 20mm. 4.6.3 The strip coils should be weighed for delivery.
5 Test method
Chemical composition arbitration analysis method
The chemical composition arbitration analysis method of the strip shall be carried out in accordance with GB6987. 5.2 Temperature and mechanical properties test method
GB/ T 8544—1997
The room temperature tensile test of the strip shall be carried out in accordance with the provisions of GB228. 5.3 Dimension measurement method
The strip thickness shall be measured at a distance of not less than 10 mm from the edge, with a scale value not greater than 0.01 mm F scale measurement: Strip width, inner and outer diameters of the coil and other external dimensions are measured with measuring tools of corresponding accuracy. 5.4 Surface quality inspection method
Surface quality is measured by visual inspection.
6 Inspection rules| |tt||6.1 Inspection and Acceptance
6.1.1 Strip materials shall be inspected and accepted by the supplier’s technical quality supervision department, and the product quality shall be guaranteed to meet the requirements of this standard. 6.1.2 The purchaser shall inspect the received strips in accordance with the provisions of this standard. If the inspection results are inconsistent with the provisions of this standard or the order contract, the purchaser shall submit a complaint to the supplier within one month from the date of receipt of the product. The solution shall be negotiated by both parties. If arbitration is required, the arbitration sampling shall be conducted by both parties at the buyer's side.
6.2 Batch
Strips shall be submitted for acceptance in batches, and each batch shall be made of the same alloy grade. , the same state and specification. Each batch of weight and number of rolls is unlimited. 6.3 Inspection Items
Each batch of strips must be inspected for chemical composition, mechanical properties, dimensional deviation, and surface quality. 6.4 Sampling ||tt ||6.4.1 Chemical composition analysis sampling is done during melting and casting; chemical composition arbitration analysis sampling is done at any part of the delivered coil. 6.4.2 Mechanical properties sampling, 2% of the rolls (not less than 2 rolls) are taken from each batch (furnace) for tensile test. Three samples are cut from each roll. Samples are cut according to the relevant provisions of GB/T16865. 6.5 Determination of test results
6.5.1 When the chemical composition is unqualified, the whole batch is judged to be unqualified; when the dimensional deviation and surface quality are unqualified, the pieces are scrapped. 6.5.2 When one sample fails the room temperature tensile test, double the sample should be taken from the roll where the sample is located for repeated testing. If there is still one sample that fails, the roll is scrapped. The rest are tested roll by roll, and those that pass the test are delivered, and those that fail the test are scrapped. 7 Marking, packaging, transportation, and storage
7.1 Marking
7.1.1 The qualified strips should be marked with a firm label (signature), which indicates: a) the inspection seal of the supplier's technical supervision department;
b) alloy grade;
c) supply status;
d) supply specifications;
e) batch roll number;
f) roll weight.
7.1.2 Strip packaging markings should comply with the provisions of GB/T3199. 7.2 Packaging, transportation and storage
Packaging, transportation and storage should comply with the provisions of GB/T3199. For strips with an inner diameter greater than or equal to 500mm, the packaging type (horizontal or vertical) should be specified in the contract.
7.3 Quality Certificate
Each batch of strips shall be accompanied by a quality certificate that complies with this standard, on which shall be indicated: a) Name of supplier;
b) Product name;
c) Alloy grade;
d) Supply status;
e) Supply specifications;
f) Batch number;
g) Net weight and number of pieces;
GB/T8544
h) Results of various analyses and tests and stamp of the technical supervision department; i) Number of this standard;
j) Packaging date.
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