GB/T 33366-2016 English PDF (GBT33366-2016)

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GB/T 33366-2016: Wrought aluminium alloy extruded rods and bars for electron enginery-tank
GB/T 33366-2016
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.150.10
H 61
Wrought Aluminium Alloy Extruded Rods
and Bars for Electron Enginery-tank
ISSUED ON: DECEMBER 30, 2016
IMPLEMENTED ON: JULY 01, 2017
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Requirements ... 5 
4 Test method ... 8 
5 Test rules ... 10 
6 Marking, packaging, transportation, storage and quality certificate ... 13 
7 Order form (or contract) contents ... 14 
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard was proposed by the China Nonferrous Metals Industry
Association.
This Standard shall be under the jurisdiction of National Technical Committee
243 on Nonferrous Metals of Standardization Administration of China (SAC/TC
243).
The drafting organizations of this Standard: Southwest Aluminum (Group) Co.,
Ltd., China Nonferrous Metals Techno-Economic Research Institute,
Guangdong Haomei Aluminum Co., Ltd., Liaoning Zhongwang Group Co., Ltd.,
Northeast Light Alloy Co., Ltd., National Nonferrous Metals Quality Supervision
and Inspection Center, Shandong Yancon Light Alloy Co., Ltd., Fujian Nanping
Aluminum Co., Ltd., Guangdong Huachang Aluminum Factory Co., Ltd.
The drafters of this Standard: Wang Xiaogang, Peng Zhujun, Ge Lixin, Xiang
Shengqian, Gai Hongtao, Wang Guojun, Li Pu, Wang Zhibo, Luo Taotao, Gao
Xinyu, Chen Jingchun, Tang Xingyu.
Wrought Aluminium Alloy Extruded Rods
and Bars for Electron Enginery-tank
1 Scope
This Standard specifies the requirements, test methods, inspection rules and
marking, packaging, transportation, storage, quality certificate and order form
(or contract) contents of wrought aluminium alloy extruded rods and bars for
electron enginery-tank.
This Standard applies to aluminum alloy extruded round bars (hereinafter
referred to as bars) which are used for processing conductive parts in electronic
equipment control cabinets.
2 Normative references
The following documents are indispensable for the application of this document.
For dated references, only the dated version applies to this document. For
undated references, the latest edition (including all amendments) applies to this
document.
GB/T 231.1, Metallic materials. Brinell hardness test. Part 1: Test method
GB/T 3190, Wrought aluminum and aluminum alloy. Chemical composition
GB/T 3199, Wrought aluminium and aluminium alloy products. Packing,
marking, transporting and storing
GB/T 3048.2, Test methods for electrical properties of electric cables and
wires. Part 2: Test of electrical resistivity of metallic materials
GB/T 3246.1, Inspection method for structure of wrought aluminum and
aluminum alloy products. Part 1: Inspection method for microstructure
GB/T 3246.2, Inspection method for structure of wrought aluminum and
aluminum alloy products. Part 2: Inspection method for macrostructure
GB/T 7999, Optical emission spectrometric analysis method of aluminum
and aluminum alloys
GB/T 8170, Rules of rounding off for numerical values and expression and
judgment of limiting values
GB/T 12966, The method for determining aluminum alloys conductivity using
eddy current
GB/T 16865, Test pieces and method for tensile test for wrought aluminium
and magnesium alloys products
GB/T 17432, Methods of sampling for analyzing the chemical composition of
wrought aluminum and aluminum alloys
GB/T 20975, Methods for chemical analysis of aluminium and aluminium
alloys
3 Requirements
3.1 Product categories
3.1.1 Grade, status and dimensions
Grade, status and diameter of the bars shall comply with the requirements of
Table 1.
Table 1 -- Grade, status and diameter
Grade Status Diameter mm
6082 T6 30.0 ~ 350.0
3.1.2 Marking and examples
Product markings are expressed in the order of product name, number of this
Standard, grade, status and dimensions. Examples of markings are as follows:
Example 1:
The bar of grade 6082, status T6, diameter of 200.0 mm and random length, is
marked as:
Bar GB/T 33366-6082T6-ϕ200
Example 2:
The bar of grade 6082, status T6, diameter of 200.0 mm and fixed length of
6000 mm, is marked as:
Bar GB/T 33366-6082T6-ϕ200×6000
3.2 Chemical composition
The chemical composition of the bar shall comply with the provisions of GB/T
3190.
3.3 Dimension deviation
3.3.1 Diameter
The diameter deviation of the bar shall comply with the requirements of Table
2.
Table 2 -- Diameter deviation In millimeters
3.3.2 Length
For bars which are supplied with a fixed length, its length allowable deviation is
+15
0 mm. For bars which are supplied with a double length, a 5-mm sawing
allowance shall be added to each saw bite.
3.3.3 Cutting slope
The end face of the bar shall be cut flat. For bars whose diameter is less than
50.0 mm, the cutting slope is not more than 5°; for bars whose diameter is not
less than 50.0 mm, the cutting slope is not more than 3°.
3.3.4 Bending
The bending of the bar shall comply with the requirements of Table 3.
Table 3 -- Bending of the bar In millimeters
Diameter Bending of the bar On a length of any 300 mm On the length of each meter
30.0 ~ 80.0 ≤ 0.6 ≤ 2.0
> 80.0 ~ 120.0 ≤ 1.0 ≤ 2.0
> 120.0 ~ 200.0 ≤ 1.5 ≤ 3.0
> 200.0 ~ 250.0 ≤ 2.0 ≤ 4.0
> 250.0 ~ 300.0 ≤ 3.0 -
> 300.0 ~ 350.0 ≤ 4.0 -
3.4 Tensile mechanical properties at room temperature
Diameter allowable deviation Diameter Positive deviation Negative deviation
The longitudinal tensile mechanical properties at room temperature of the bar
shall comply with the requirements of Table 4. For bars whose diameter
exceeds the requirements that are specified in Table 4, their longitudinal tensile
mechanical properties at room temperature shall be negotiated between the
supplier and the buyer and be indicated in the order form (or contract). The
measured results shall be attached when it is not indicated.
Table 4 -- Tensile mechanical properties at room temperature
Grade Status Diameter mm
Tensile
strength Rm
MPa
The specified non-
proportional extension
strength Rp0.2
MPa
Elongation
after break A
Not less than
6082 T6
≥ 30 ~ 150 310 260 8
> 150 ~ 200 280 240 6
> 200 ~ 250 270 200 6
3.5 Brinell hardness
The Brinell hardness of the bar shall comply with the requirements of Table 5.
For bars whose diameter exceeds the requirements that are specified in Table
5, the Brinell hardness shall be negotiated between the supplier and the buyer
and be indicated in the order form (or contract). The measured results shall be
attached when it is not indicated.
Table 5 -- Brinell hardness
Alloy Status Diameter mm Brinell hardness HBW
6082 T6 60 ~ 200 ≥ 95
3.6 Conductivity
The conductivity of the 6082 alloy and T6 state shall comply with the
requirements of Table 6. For bars whose specification exceeds that in Table 6,
the conductivity shall be negotiated between the supplier and the buyer, and
shall be indicated in the order form (or contract). If not specified, the measured
results shall be attached.
Table 6 -- Conductivity
Alloy Status Diameter mm
Conductivity
MS/m
6082 T6 60 ~ 200 ≥ 26
3.7 Low-magnificat...