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GB/T 32468-2015 (GBT 32468-2015)

GB/T 32468-2015_English: PDF (GBT32468-2015)
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BASIC DATA
Standard ID GB/T 32468-2015 (GB/T32468-2015)
Description (Translated English) Copper clad aluminum plate, sheets and strips
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H60
Classification of International Standard 77.150.01
Word Count Estimation 14,116
Date of Issue 2015-12-31
Date of Implementation 2016-11-01
Quoted Standard GB/T 228.1-2010; GB/T 232; GB/T 2423.22; GB/T 3190; GB/T 4340.1; GB/T 5121.1; GB/T 5121.2; GB/T 5121.3; GB/T 5121.4; GB/T 5121.5; GB/T 5121.6; GB/T 5121.7; GB/T 5121.8; GB/T 5121.9; GB/T 5121.10; GB/T 5121.11; GB/T 5121.12; GB/T 5121.13; GB/T 5121.14; GB/T 5121.15; GB/T 5121
Drafting Organization Luoyang Copper Development Co., a metal material; Henan University of Science and Technology; Zhuhai Han Sheng Technology Co., Ltd.
Administrative Organization National non-ferrous metals Standardization Technical Committee (SAC/TC 243)
Regulation (derived from) State Standard Announcement 2015 No.43
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 terms, definitions, requirements, test methods, inspection rules and marks, packaging, transport, storage, quality certificates and order (or contract) contents of copper-aluminum composite strips. This standard applies to electricity, communications, electronics, construction, thermal conductivity and other industries with copper and aluminum composite strip.

GB/T 32468-2015
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.150.01
H 60
Copper clad aluminum plate, sheets and strips
铜铝复合板带
ISSUED ON. DECEMBER 31, 2015
IMPLEMENTED ON. NOVEMBER 1, 2016
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 ... 4 
2 Normative references ... 4 
3 Terms and definitions ... 5 
4 Requirements ... 6 
5 Test methods ... 13 
6 Inspection rules ... 16 
7 Symbols, packaging, transportation, storage and quality certificate ... 18 
8 Contents of the order form (or contract) ... 19 
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard was proposed by China Non-ferrous Metals Industry Association.
This Standard shall be under the jurisdiction of the National Technical
Committee for Standardization of Non-ferrous Metals (SAC/TC 243).
Drafting organizations of this Standard. Luoyang Tongyi Metal Material
Development Co., Ltd, Henan University of Science and Technology, and
Zhuhai Hansen Technology Co., Ltd.
Main drafters of this Standard. Shang Zhengping, Wang Xiang, Fan Guodong,
Zhou Zhaoyang, Xie Jingpei, Li Jiwen, Wang Wenyan, Wang Aiqin, Chen Ning
and Wei Xiaolan.
Copper clad aluminum plate, sheets and strips
1 Scope
This Standard specifies the terms and definitions, requirements, test methods,
inspection rules, symbols, packaging, transportation, storage, quality certificate,
and content of the order form (or contract) of the copper clad aluminum plate,
sheets and strips.
This Standard is applicable to the copper clad aluminum plate, sheets and
strips used in electricity, communications, electronics, construction, thermal
conductivity and other industries.
2 Normative references
The following documents are essential to the application of this document. For
dated references, only the editions with the dates indicated are applicable to
this document. For undated references, only the latest editions (including all the
amendments) are applicable to this document.
GB/T 228.1-2010 Metallic materials - Tensile testing - Part 1. Method of test
at room temperature
GB/T 232 Metallic materials - Bend test
GB/T 2423.22 Environmental testing - Part 2. Tests methods - Test N.
Change of temperature
GB/T 3190 Wrought aluminium and aluminium alloy - Chemical composition
GB/T 4340.1 Metallic materials - Vickers hardness test - Part 1. Test method
GB/T 5121 (all parts) Methods for chemical analysis of copper and copper
alloys
GB/T 5231 Designation and chemical composition of wrought copper and
copper alloys
GB/T 6462 Metallic and oxide coatings - Measurement of coating thickness
- Microscopical method
GB/T 7999 Optical emission spectrometric analysis method of aluminum and
aluminum alloys
GB/T 8165-2008 Stainless steel clad plates, sheets and strips
GB/T 8888 Wrought heavy non-ferrous metal products - Packing, marking,
transportation, storing and certificate of quality
GB/T 20975 (all parts) Methods for chemical analysis of aluminium and
aluminium alloys
GB/T 26303.3 Measuring methods for dimensions and shapes of wrought
copper and copper alloys - Part 3. Sheets and strips
GJB 446 Test method for 90 degree peel strength of adhesives (metal to
metal)
YS/T 482 Methods for analysis of copper and copper alloys - The atomic
emission spectrometry
3 Terms and definitions
The following terms and definitions are applicable to this document.
3.1 Copper clad aluminum plate, sheets and strips
USE aluminum and aluminum alloys as base metal. Continuously COMPOUND
a certain thickness of composites for copper and copper alloy plates, sheets
and strips on one side or both sides, by using continuous casting and semi-
molten rolling composite method or other methods. The composite interfaces
are in metallurgical bond.
3.2 Metallurgical bond
It refers to the bond formed by the inter-diffusion of atoms between the
interfaces of two kinds of metal.
3.3 Cladding copper metal
It refers to the copper and copper alloys playing a variety of functional roles in
the copper clad aluminum plate, sheets and strips.
3.4 Base aluminum metal
It refers to the aluminum and aluminum alloys playing the auxiliary role in the
copper clad aluminum plate, sheets and strips.
3.5 Continuous casting and semi-molten rolling composite method
4.8.1 PLACE the copper clad aluminum plate, sheets and strips in an
environment with a temperature of 85°C and a relative humidity of 85% for
1,000h. The peel strength of copper and aluminum shall conform to the
provisions of Section 4.6.
4.8.2 CYCLE the copper clad aluminum plate, sheets and strips within the
temperature range of -50°C to 130°C for 1,000 times. The peel strength of
copper and aluminum shall conform to the provisions of Section 4.6.
4.9 Surface quality
There shall be no cracks, raw edges, peelings, leakage of aluminum, adhesion
of aluminum, bubbles and pits on the surfaces of the copper clad aluminum
plate, sheets and strips. It is allowed to have surface defects that can be
removed by grinding. However, after removal, the surface quality shall conform
to the requirements for the tolerance of the cladding copper metal’s thickness
ratio.
5 Test methods
5.1 Chemical composition
As for the cladding copper metal, the chemical compositions shall be analyzed
according to the provisions of GB/T 5121 (all parts) or YS/T 482, and the referee
shall be carried out in accordance with the provisions of GB/T 5121 (all parts).
As for the base aluminum metal, the chemical compositions shall be analyzed
according to the provisions of GB/T 20975 (all parts) or GB/T 7999, and the
referee shall be carried out in accordance with the provisions of GB/T 20975
(all parts).
5.2 Contour dimensions and tolerances
The contour dimensions and tolerances of the copper clad aluminum plate,
sheets and strips shall be tested according to the provisions of GB/T 26303.3.
5.3 Cladding copper metal’s thickness ratio
5.3.1 The cladding copper metal’s thicknesses of the copper clad aluminum
plate, sheets and strips shall be tested according to the provisions of GB/T 6462.
5.3.2 SELECT three penetrative test pieces on the cross sections of the
copper clad aluminum plate, sheets and strips according to the positions A-A,
B-B and C-C shown in Figure 2.
P2 test piece specified in Table B.1 of GB/T 228.1-2010. The Vickers hardness
test shall be carried out according to the provisions of GB/T 4340.1.
5.5 Bending property
The bending properties of the copper clad aluminum plate, sheets and strips
shall conform to the provisions of GB/T 232.
5.6 Peel strength
The peel strengths of the copper clad aluminum plate, sheets and strips shall
be tested according to the provisions of GJB 446.
5.7 Recombination rate
The recombination rates of the copper clad aluminum plate, sheets and strips
shall be tested according to the ultrasonic testing method in Annex A of GB/T
8165-2008. The test pieces for the test shall be selected when the thicknesses
of the plates, sheets and strips are greater than or equal to 6mm during the
product processing.
5.8 Thermal stability
5.8.1 The thermal stability test of the copper clad aluminum plate, sheets and
strips shall be conducted according to the provisions of Sections 5.8.2 and 5.8.3
of this Standard and by reference to GB/T 2423.22.
5.8.2 TAKE 200mm × 100mm copper clad aluminum plate, sheets and strips.
PLACE them in an environment with a temperature of 85°C and a relative
humidity of 85% for 1,000h. TEST the peel strength according to the provisions
of Section 5.6.
5.8.3 TAKE 200mm × 100mm copper clad aluminum plate, sheets and strips.
PLACE the samples in a freezer at -50°C for 5min. TAKE them out. PLACE
them in the air for 5min. TRANSFER them into a drying oven at 130°C for 5min.
TAKE them out. PLACE them in the air for 5min. TRANSFER them into a freezer
at -50°C. After cycling for 1,000 times, TEST the peel strength according to the
provisions of Section 5.6.
5.9 Surface quality
USE the visual observation method or a five times magnifier to inspect the
surface quality of the copper clad aluminum plate, sheets and strips.
Tensile property
TAKE 2 rolls (pieces) at random from each batch;
TAKE 1 test piece along the rolling direction from
each roll (piece)k
4.4 5.4
Vickers hardness TAKE 2 rolls (pieces) at random from each batch; TAKE 1 test piece from each roll (piece) 4.4 5.4
Bending property TAKE 2 rolls (pieces) at random from each batch; TAKE 1 test piece from each roll (piece) 4.5 5.5
Peel strength TAKE 2 rolls (pieces) at random from each batch; TAKE 1 test piece from each roll (piece) 4.6 5.6
Recombination rate TAKE 2 rolls (pieces) at random from each batch; TAKE 1 test piece from each roll (piece) 4.7 5.7
Thermal stability TAKE 2 rolls (pieces) at random from each batch; TAKE 1 test piece from each roll (piece) 4.8 5.8
Surface quality Roll by roll (piece by piece) 4.9 5.9
a 1 group o...