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GB/T 3880.3-2024 English PDF (GB/T 3880.3-2012, GB/T 3880.3-2006)

GB/T 3880.3-2024_English: PDF (GB/T3880.3-2024)
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GB/T 3880.3-2024English395 Add to Cart 0--9 seconds. Auto-delivery Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering - Part 3: Tolerances on forms and dimensions Valid GB/T 3880.3-2024
GB/T 3880.3-2012English125 Add to Cart 0--9 seconds. Auto-delivery Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering -- Part 3: Tolerances on forms and dimensions Obsolete GB/T 3880.3-2012
GB/T 3880.3-2006English519 Add to Cart 4 days [Need to translate] Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering -- Part 3: Tolerances on forms and dimensions Obsolete GB/T 3880.3-2006


BASIC DATA
Standard ID GB/T 3880.3-2024 (GB/T3880.3-2024)
Description (Translated English) Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering - Part 3: Tolerances on forms and dimensions
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H61
Classification of International Standard 77.150.10
Word Count Estimation 22,292
Date of Issue 2024-04-25
Date of Implementation 2024-11-01
Older Standard (superseded by this standard) GB/T 3880.3-2012
Drafting Organization Southwest Aluminum (Group) Co., Ltd., Fujian Nan Aluminum Strip Processing Co., Ltd., Nonferrous Metals Technology and Economic Research Institute Co., Ltd., Northeast Light Alloy Co., Ltd., Chalco Ruimin Co., Ltd., Xiamen Xiashun Aluminum Foil Co., Ltd., Jiangsu Dingsheng New Energy Materials Co., Ltd., Youyan Engineering Technology Research Institute Co., Ltd., Yinbang Metal Composite Materials Co., Ltd., Zhejiang Yongjie Aluminum Co., Ltd., Guizhou Guilu New Materials Co., Ltd., Guangxi Nannan Aluminum Processing Co., Ltd., Tianjin Zhongwang Aluminum Co., Ltd., Guangxi Guangtou Liuzhou Aluminum Co., Ltd., Shandong Nanshan Aluminum Co., Ltd.
Administrative Organization National Technical Committee on Standardization of Nonferrous Metals (SAC/TC 243)
Proposing organization China Nonferrous Metals Industry Association
Issuing agency(ies) State Administration for Market Regulation, National Standardization Administration

BASIC DATA
Standard ID GB/T 3880.3-2012 (GB/T3880.3-2012)
Description (Translated English) Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering. Part 3: Tolerances on forms and dimensions
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H61
Classification of International Standard 77.150.10
Word Count Estimation 15,155
Older Standard (superseded by this standard) GB/T 3880.3-2006
Adopted Standard EN 485.3-2003, NEQ; EN 485.4-1994, NEQ
Drafting Organization Southwest Aluminum (Group)Co., Ltd.
Administrative Organization National Standardization Technical Committee of non-ferrous metals
Regulation (derived from) National Standards Bulletin No. 41 of 2012
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the general industrial aluminum and aluminum alloy sheet, strip the size of the deviation. This section applies to general industrial aluminum and aluminum alloy rolled sheet, strip.

BASIC DATA
Standard ID GB/T 3880.3-2006 (GB/T3880.3-2006)
Description (Translated English) Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering. Part 3: Tolerances on forms and dimensions
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H61
Classification of International Standard 77.150.10
Word Count Estimation 13,150
Date of Issue 2006-09-26
Date of Implementation 2007-02-01
Older Standard (superseded by this standard) GB/T 3194-1998
Drafting Organization Southwest Aluminum (Group) Co., Ltd.
Administrative Organization National Nonferrous Metals Standardization Technical Committee
Regulation (derived from) National Standard Approval Announcement 2006 No.10 (Total No.97); National Standard Announcement 2012 No.41
Proposing organization China Nonferrous Metals Industry Association
Issuing agency(ies) Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China
Summary This standard specifies the general industrial aluminum and aluminum alloy plate, dimensional variation of the strip. This section applies to general industrial aluminum and aluminum alloy rolled plate, strip.


GB/T 3880.3-2024 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.150.10 CCS H 61 Replacing GB/T 3880.3-2012 Wrought aluminum and aluminum alloy plates, sheets and strips for general engineering - Part 3: Tolerances on forms and dimensions ISSUED ON: APRIL 25, 2024 IMPLEMENTED ON: NOVEMBER 01, 2024 Issued by: State Administration for Market Regulation; National Standardization Administration. Table of Contents Foreword ... 3 Introduction ... 5 1 Scope ... 6 2 Normative references ... 6 3 Terms and definitions ... 6 4 Symbols ... 6 5 Deviation grade ... 7 6 Technical requirements ... 7 7 Test methods ... 20 Foreword This document was drafted in accordance with the provisions of GB/T 1.1-2020 "Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents". This document is Part 3 of GB/T 3880 "Wrought aluminum and aluminum alloy plates, sheets and strips for general engineering". GB/T 3880 has published the following parts: - Part 1: Technical conditions of delivery; - Part 2: Mechanical properties; - Part 3: Tolerances on forms and dimensions. This document replaces GB/T 3880.3-2012 "Wrought aluminum and aluminum alloy plates, sheets and strips for general engineering - Part 3: Tolerances on forms and dimensions". Compared with GB/T 3880.3-2012, in addition to structural adjustments and editorial changes, the main technical changes are as follows: a) DELETE the A and B alloy classifications (see 2.1.1 of the 2012 edition); b) CHANGE the maximum thickness of cold-rolled plates and strips from 6.00 mm to 7.00 mm, the maximum thickness of hot-rolled plates from 250.00 mm to 435.00 mm; CHANGE the thickness tolerance requirements; ADD the thickness range requirements (see 6.1; 3.1 of the 2012 edition); c) CHANGE the width deviation (see 6.2; 3.2 of the 2012 edition); d) CHANGE the length deviation of the plate (see 6.3; 3.3 of the 2012 edition); e) CHANGE the requirements for plate roughness; ADD the requirements for strip roughness (see 6.4; 3.4 of the 2012 edition); f) ADD the ordinary level requirements for plate diagonal deviation; CHANGE the high-precision level requirements for diagonal deviation (see 6.6; 3.6 of the 2012 edition); g) ADD the requirements for convexity (see 6.7); h) ADD the requirements for roughness (see 6.8); i) ADD the requirements for strip staggering and tower shape (see 6.9). Please note that some contents of this document may involve patents. The issuing agency of this document does not assume the responsibility for identifying patents. Wrought aluminum and aluminum alloy plates, sheets and strips for general engineering - Part 3: Tolerances on forms and dimensions 1 Scope This document specifies the dimensional deviation grade, technical requirements, test methods of general industrial aluminum and aluminum alloy plates and strips. This document applies to general industrial aluminum and aluminum alloy rolled plates and strips (hereinafter referred to as "plates and strips"). 2 Normative references The contents of the following documents constitute the essential terms of this document through normative references in the text. Among them, for dated references, only the version of that date applies to this document; for undated references, the latest version (including all amendments) applies to this document. GB/T 1031 Geometrical product specifications (GPS) - Surface texture: Profile method - Surface roughness parameters and their values GB/T 8005.1 Aluminium and aluminium alloy terms and definitions - Part 1: Product and method of processing and treatment GB/T 8170 Rules of rounding off for numerical values and expression and judgement of limiting values GB/T 26492.3 Defects of wrought aluminium and aluminium alloys ingots and products - Part 3: Defects for plates, sheets and strips 3 Terms and definitions The terms and definitions, which are defined in GB/T 8005.1 and GB/T 26492.3, apply to this document. 4 Symbols The symbols in Table 1 apply to this document. 6.7 Center convexity When the buyer has requirements for the center convexity of plates and strips, the supplier and buyer shall negotiate and determine, meanwhile indicate in the order (or contract). The convexity of the mother plate or mother strip of the plate or strip shall be 0% ~ 1.5%. 6.8 Roughness When the purchaser has requirements for the surface roughness of cold-rolled plates and strips, the supplier and the purchaser shall negotiate and determine, meanwhile indicate it in the order (or contract). The surface roughness (Ra) of cold-rolled plates and strips shall not exceed 0.50 μm. 6.9 Staggered layers and tower shapes The staggered layers of strips shall not exceed 3 mm; the tower shape shall not exceed 10 mm (except for the inner 5 circles and the outer 2 circles). When the purchaser has special requirements for the staggered layers and tower shapes of strips, the supplier and the purchaser shall negotiate and determine, meanwhile indicate it in the order (or contract). 6.10 Others Where there are other requirements for the dimensional deviation of plates and strips, the supplier and the purchaser shall negotiate and determine, meanwhile indicate it in the order (or contract). 7 Test methods 7.1 Dimension rounding Dimension measurement values are not allowed to be rounded off; the method for determining the limit value shall comply with the provisions of GB/T 8170. 7.2 Thickness The thickness of plates and strips shall be measured at a distance of not less than 10 mm from the side and not less than 115 mm from the end, using a micrometer which has an accuracy of 0.01 mm or a measuring tool which has the same accuracy. 7.3 Width and length The width and length of plates and strips shall be measured using tools which have corresponding accuracy. 7.4 Unevenness 7.4.1 Unevenness of plate 7.4.1.1 General requirements 7.4.1.1.1 Place the plate freely on the platform; wait for it to balance and stabilize; measure the warping height of the end. Use tools of corresponding accuracy to measure the gap value (i.e. wave height) between the plate surface and the platform. For plates with multiple waves, the corresponding wave distance shall also be measured. When making measurement: - Where there are several waves on a plate at the same time, it shall measure the largest one; - Edge waves can be directly measured by a feeler gauge or ruler; - The middle waves of products which have a thickness greater than 2.0 mm are measured by a level ruler, ruler or wedge ruler. The level ruler shall be parallel to the platform during measurement. If it is not parallel, it shall be parallelized with the help of a pad; - The middle waves of products, which have a thickness of no more than 2.0 mm, are measured by straightening with a feeler gauge or a thin wire (preferably a polyamide wire). The weight of the straightened thin wire shall not deform the plate. 7.4.1.1.2 Calculate the roughness according to the wave height and length (or width/wave distance). The value is expressed as a percentage, dimensionless; the calculation result is expressed to one decimal place. The value is rounded off according to the provisions of GB/T 8170. 7.4.1.2 Single wave unevenness 7.4.1.2.1 Measure the length and wave height of the plate, as shown in Figure 1. Divide the wave height by the length of the plate to obtain the longitudinal roughness (d0/l). ......


GB/T 3880.3-2012 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.150.10 H 61 Replacing GB/T 3880.3-2006 Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering – Part 3. Tolerances on forms and dimensions ISSUED ON. DECEMBER 31, 2012 IMPLEMENTED ON. OCTOBER 1, 2013 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China; Standardization Administration of the People’s Republic of China. Table of Contents Foreword ... 3  1 Scope ... 5  2 Classification and grading ... 5  3 Requirements ... 6  4 Inspection methods for tolerances on dimensions ... 16  5 Others ... 19  Foreword GB/T 3880 Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering is divided into three parts. — Part 1. Technical conditions of delivery; — Part 2. Mechanical properties; — Part 3. Tolerances on forms and dimensions. This Part is part 3 of GB/T 3880. This Part is drafted according to the rules given in GB/T 1.1-2009. This Part replaces GB/T 3880.3-2006 Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering – Part 3. Tolerances on forms and dimensions. Compared with GB/T 3880.3-2006, the major technical changes in this Part are as follows. — EXPAND the maximum thickness from “150.00mm” to “250.00mm”; — EXPAND the maximum width from “2,500.0mm” to “3,500.0mm”; — MODIFY the maximum thickness of cold-rolled plates, sheets and strips to “6.00mm”. — MODIFY the requirements for the tolerances on thicknesses, widths, lengths and diagonals as well as the side curvature of part of the high precision grade of plates, sheets and strips. This Part, using redrafting method, was formulated by making reference to EN 485.3-2003 Aluminium and aluminium alloys – Sheet, strip and plate – Part 3. Tolerances on dimensions and form for hot-rolled products and EN 485.4-1994 Aluminium and aluminium alloys – Sheet, strip and plate – Part 4. Tolerances on shape and dimensions for cold-rolled products. The consistent degree BETWEEN this Part AND EN 485.3-2003 and EN 485.4-1994 is not equivalent. This Part shall be under the jurisdiction of the National Technical Committee for Standardization of Non-ferrous Metals (SAC/TC 243). Drafting organizations of this Standard. Southwest Aluminum (Group) Co., Ltd., China Non-ferrous Metals Standards Metrology and Quality Institute, CHALCO Ruimin Aluminum Strips Co., Ltd., Northeast Light Alloys Co., Ltd., Xiamen Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering – Part 3. Tolerances on forms and dimensions 1 Scope This Part of GB/T 3880 specifies the tolerances on forms and dimensions of the wrought aluminium and aluminium alloy plates, sheets and strips for general engineering. This Part is applicable to the wrought aluminium and aluminium alloy rolled plates, sheets and strips for general engineering. 2 Classification and grading 2.1 Classification of aluminium or aluminium alloys Aluminium and aluminium alloys are divided into Type A and Type B. SEE Table 1. Table 1 Alloy Classification Designation series Classification of aluminium or aluminium alloys A B 1××× All - 2××× - All 3××× The maximum content of Mn shall not be greater than 1.8%. The maximum content of Mg shall not be greater than 1.8%. The sum of the maximum content of Mn and the maximum content of Mg shall not be greater than 2.3%. For instance, 3003, 3103, 3005, 3105, 3102 and 3A21. Other alloys except the Type A, such as 3004 and 3104 4××× The maximum content of Si shall not be greater than 2%, such as 4006 and 4007. Other alloys except the Type A, such as 4015 5××× The maximum content of Mg shall not be greater than 1.8%. The maximum content of Mn shall not be greater than 1.8%. The sum of the maximum content of Mg and the maximum content of Mn shall not be greater than 2.3%. For instance, 5005, 5005A and 5050. Other alloys except the Type A, such as 5A02, 5A03, 5A05, 5A06, 5040, 5049, 5449, 5251, 5052, 5154A, 5454, 5754, 5082, 5182, 5083, 5383 and 5086 Unit. mm Table 6 Tolerances on Widths of Cold-rolled Plates and Sheets 3.2.1.2 Tolerances on widths of hot-rolled plates and sheets For the hot-rolled plates and sheets supplied after trimming, the tolerances on widths of plates and sheets shall conform to the provisions in Table 7. For the hot-rolled plates and sheets supplied without trimming, the tolerances on widths of plates and sheets shall be + 150mm or determined after the consultation between supply and requisitioning parties, and shall be indicated in the order forms (or contracts). When the requisitioning party has special requirements, the tolerances on widths of plates and sheets shall be agreed upon by the supply and requisitioning parties, and shall be indicated in the order forms (or contracts) (the sum of the absolute values of the positive and negative tolerances required for the requisitioning party shall be consistent with Table 7). Table 7 Tolerances on Widths of Hot-rolled Plates and Sheets after Trimming 3.2.2 Tolerances on widths of strips 3.2.2.1 Tolerances on widths of cold-rolled strips The tolerances on widths of cold-rolled strips shall conform to the provisions in Table 8. The high precision grade needs to be negotiated by the supply and requisitioning parties, and to be indicated in the order forms (or contracts) as required. When there are no clear indications, the ordinary grade applies. When Unit. mm Ordinary grade Tolerances on thicknesses under the following widths Tolerances on thicknesses under the following widths Thickness Thickness Grade High precision grade Hot-rolled plates and sheets > 2.50~3.00 ≤ 0.4% ≤ 0.5% ≤ 0.5% ≤ 18mm ≤ 30mm > 3.00~6.00 ≤ 0.3% ≤ 0.4% ≤ 0.35% > 6.00~50.00 ≤ 0.2% ≤ 0.4% ≤ 0.3% > 50.00~250.00 ≤ 0.2% ≤ 0.2% Not required or determined after consultation between supply and requisitioning parties Note. L refers to the lengths of plates and sheets. W refers to the widths of plates and sheets. R refers to any chord lengths of no less than 300mm. d refers to the wave heights. a The end portion refers to the entire board at the end included within the length range of 300mm on both ends along the longitudinal direction of plates and sheets. If the plates and sheets are square, the end portion refers to the board with square rings within the range of 300mm around the edges. 3.5 Side curvature 3.5.1 Hot-rolled plates and sheets The ordinary grade does not require the side curvature. The high precision grade shall conform to the provisions in Table 14. The high precision grade needs to be negotiated by the supply and requisitioning parties, and to be indicated in the order forms (or contracts) as required. When there are no clear indications, the ordinary grade applies. 3.5.2 Cold-rolled plates and sheets The ordinary grade does not require the side curvature. The high precision grade shall conform to the provisions in Table 15. The high precision grade needs to be negotiated by the supply and requisitioning parties, and to be indicated in the order forms (or contracts) as required. When there are no clear indications, the ordinary grade applies. 3.5.3 Hot-rolled strips Do NOT require the side curvature. 3.5.4 Cold-rolled strips The ordinary grade does not require the side curvature. The high precision grade shall conform to the provisions in Table 16. The high precision grade needs to be negotiated by the supply and requisitioning parties, and to be indicated in the order forms (or contracts) as required. When there are no clear indications, the ordinary grade applies. The ordinary grade does not require the tolerances on diagonals. The high precision grade shall conform to the provisions in Table 18. The high precision grade needs to be negotiated by the supply and requisitioning parties, and to be indicated in the order forms (or contracts) as required. When there are no clear indications, the ordinary grade applies. Table 17 Tolerances on Diagonals of Hot-rolled Plates and Sheets – High Precision Grade Table 18 Tolerances on Diagonals of Cold-rolled Plates and Sheets – High Precision Grade 4 Inspection methods for tolerances on dimensions 4.1 Rounding off of dimensions The dimension measurements are not allowed to be rounded off. 4.2 Thickness USE a micrometer with the accuracy of 0.01mm, or the measuring tools with the same accuracy to measure the thicknesses of plates, sheets and strips. Respectively KEEP away from the sides and the end portion for at least 10mm and 115mm. 4.3 Width and length Unit. mm a The tolerances on diagonals shall be agreed upon by the supply and requisitioning parties, and shall also be indicated in the order forms (or contracts). Unit. mm a The tolerances on diagonals shall be agreed upon by the supply and requisitioning parties, and shall also be indicated in the order forms (or contracts). Tolerances on thicknesses under the following widths Tolerances on thicknesses under the following widths Thickness Length Length ......

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