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GB/T 3191-2010 English PDF (GBT3191-2010)

GB/T 3191-2010 English PDF (GBT3191-2010)

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GB/T 3191-2010: Aluminium and aluminium alloys extruded bars, rods

This Standard specifies the requirements, test methods, inspection rules, marking, packing, transportation, storage, quality certificate, and contents of contract (or order) of the aluminium and aluminium alloy extruded bars and rods for general industrial use.
GB/T 3191-2010
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 77.150.10
H 61
Replacing GB/T 3191-1998
Aluminium and Aluminium Alloys Extruded Bars,
Rods
ISSUED ON. JANUARY 14, 2011
IMPLEMENTED ON. NOVEMBER 01, 2011
Issued by. General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ);
Standardization Administration (SAC) of the People's
Republic of China.
Table of Contents
FOREWORD ... 3
1 SCOPE ... 4
2 NORMATIVE REFERENCES ... 4
3 REQUIREMENTS ... 5
4 TEST METHODS ... 16
5 INSPECTION RULES ... 18
6 MARKING, PACKING, TRANSPORTATION AND STORAGE, AND
QUALITY CERTIFICATE ... 21
7 CONTENTS OF CONTRACT (OR ORDER) ... 23
Foreword
This Standard replaces GB/T 3191-1998 "Extrusion Rods and Bars of Aluminium and Aluminium Alloy".
There are significant changes in this Standard, compared with GB/T 3191-1998. ?€? The dimensional deviation system was modified.
?€? The mechanical property indexes were modified or supplemented.
This Standard adopts re-drafting method by reference to ASTM B221M-08 "Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes". The consistent degree with ASTM B221M-08 is not equivalent. This Standard was proposed by China Nonferrous Metals Industry Association. This Standard shall be under the jurisdiction of the National Technical Committee on Nonferrous Metals of Standardization Administration of China (SAC/TC 243). Chief drafting organization of this Standard. Aluminium Corporation of China Limited Northwest Aluminium Fabrication Branch.
Participating drafting organizations of this Standard. Northeast Light Alloy Co., Ltd., Southwest Aluminum (Group) Co., Ltd., Longkou Conglin Aluminum Co., Ltd., Shandong Nanshan Aluminum Co., Ltd., Fujian Nanping Aluminium Co., Ltd., Shandong Yankuang Light Alloy Co., Ltd., Liaoning Zhongwang Group Co., Ltd. AND Fujian Minfa Aluminium Co., Ltd.
Chief drafting staffs of this Standard. Zhao Haibin, Zhang Wei, Xie Hui, Wang Guojun, Li Ruishan, Su Zhenjia, Wang Zhaobin and Ying Weidong.
The previous editions replaced by this Standard are as follows.
?€? GB/T 3191-1982, GB/T 3192-1982, GB/T 10572-1989;
?€? GB/T 3191-1998.
Aluminium and Aluminium Alloys Extruded Bars,
Rods
1 Scope
This Standard specifies the requirements, test methods, inspection rules, marking, packing, transportation, storage, quality certificate, and contents of contract (or order) of the aluminium and aluminium alloy extruded bars and rods for general industrial use. This Standard is applicable to the bars and rods of round cross section (hereinafter referred to as "round-rods"), the bars and rods of square cross section (hereinafter referred to as "square-rods") and the bars and rods [Translator. abbreviated as ?€?bars- rods?€?] of regular hexagonal cross section (hereinafter referred to as "hexagonal-rods"). 2 Normative References
The following documents are essential for the application of this document. For the dated reference, only the dated editions are applicable to this Standard. For the undated references, the latest edition of the normative document (including all amendments) referred to applies.
GB/T 228 "Metallic Materials - Tensile Testing at Ambient Temperature"
GB/T 3190 "Wrought Aluminium and Aluminium Alloys - Chemical Composition Limits"
GB 3199 "Wrought Aluminium and Aluminium Alloy Products - Packing, Marking, Transporting and Storing"
GB/T 3246.1 "Wrought Aluminium and Aluminium Alloys Products Inspection Method for Structure"
GB/T 3246.2 "Wrought Aluminium and Aluminium Alloys Products Inspection Method for Macrostructure"
GB/T 6519 "Process for Ultrasonic Inspection of Wrought Aluminum Alloy
Products"
GB/T 2039 "Metallic Materials - Creep and Stress-rupture Test in Tension" GB/T 7999 "Optical Emission Spectrometric Analysis Method of Aluminum and Aluminum Alloys"
Designation
Delivery condition Sample condition Specification
Category II
(bars-rods of 2?????? and
7?????? alloys and those of
5?????? alloys with average
magnesium content ???3%)
Category I
(other bars-
rods except
for Category
II)
O O
5083 ?€?
H112 H112
O O
5086 ?€?
H112 H112
O O
?€? 6A02 T1, T6 T62, T6
?€? 6101A T6 T6
?€? 6005, 6005A
T5 T5
T6 T6
7A04 ?€? T1, T6 T62, T6
7A09 ?€? T1, T6 T62, T6
7A15 ?€? T1, T6 T62, T6
7003 ?€?
T5 T5
T6 T6
7005 ?€? T6 T6
7020 ?€? T6 T6
7021 ?€? T6 T6
7022 ?€? T6 T6
7049A ?€? T6, T6510, T6511 T6, T6510, T6511
7075 ?€?
O O
T6, T6510, T6511 T6, T6510, T6511
?€? 8A06
O O
H112 H112
3.1.2 Mark illustrations
The product marks shall be expressed according to the sequence of product name, designation, delivery condition, specification and standard number. The mark illustrations are listed as follows.
Illustration 1. The round-rods manufactured with 2024 alloy, with delivery condition of T3511, diameter of 30.00mm and specified length of 3,000mm are marked as.
Rod 2024-T3511 ??30??3000 GB/T 3191-2010
Illustration 2. The high strength square-rods manufactured with 2A11 alloy, with delivery condition of T4 and incircle diameter of 40.00mm are marked as.
High strength square-rod 2A11l-T4 40 GB/T 3191-2010
Table 5 In. mm
Diameter of incircle
of square-rod
Twist, not larger than
General grade High-precision grade Super-high precision grade
On length of
1 meter Full length L/m
On length of
1 meter Full length L/m
On length of 1
meter Full length L/m
???30.00 4 4??L 2 6 1 3
>30.00~50.00 6 6??L 3 8 1.5 4
>50.00~120.00 10 10??L 4 10 2 5
>120.00~150.00 13 13??L 6 12 3 6
>150.00~200.00 15 15??L 7 14 3 6
Table 6 In. mm
Diameter of incircle of
hexagonal-rod
Twist, not larger than
General grade High-precision grade Super-high precision grade
On length of 1
meter
Full length
L/m
On length of 1
meter
Full length
L/m
On length of 1
meter
Full length
L/m
???14.00 4 4??L 3 3??L 2 2??L
>14.00~38.00 11 11??L 8 8??L 5 5??L
>38.00~100.00 18 18??L 12 12??L 9 9??L
>100.00~150.00 25 25??L ?€? ?€? ?€? ?€?
3.3.6 Length
The permissible length deviation for the bars-rods delivered in specified lengths shall be. +15mm. The bars-rods supplied in multiple lengths shall include the saw cutting allowance that shall be calculated according to 5mm per saw cut.
3.4 Mechanical properties
3.4.1 The longitudinal tensile mechanical properties of the bars-rods at room temperature shall be in accordance with those specified in Table 7. The non-heat treated aluminium alloy bars-rods at H112, with their properties reach the requirements of O-condition, may be delivered according to the O-condition. The properties of bars- rods exceeding the specified scope of Table 7 shall be determined through negotiation between supplier and demander and shall be indicated in the contract (or order). deviation of the bars-rods. Where the non-stratified bars-rods, it shall be agreed between supplier and demander through negotiation and shall be indicated in the contract (or order).
3.5.5 Where requirement on coarse grain ring is indicated in the contract (or order). The coarse grain ring depth on the low power test piece shall be in accordance with those specified in Table 10.
Table 10 In. mm
Designation
Coarse grain ring depth, not larger than
General grade High-precision grade a
2A02 5 ?€?
2A11, 2A12, 2024, 7A04, 7A09, 7A15, 7075 8 3
6A02, 6061, 6082, 2A50, 2A14 8 5
a The high-precision grade is only applicable to the round-rods in diameter of 20.00 mm~120.00 mm and the square-rods and hexagonal-rods with incircle diameter of 20.00 mm~100.00 mm. 3.6 Microstructure
3.6.1 The microstructure of quenched bars-rods shall be free from over-burning. 3.6.2 The microstructure of bars-rods of 4A11 and 4032 alloys may contain a small amount of primary silicon, however, the primary silicon shall be of uniform distribution instead of cluster distribution, and the maximum line size of primary silicon shall not exceed 0.08mm.
3.7 Ultrasonic inspection
As for the bars-rods requiring ultrasonic inspection, the inspection positions and grades may be agreed between supplier and demander through negotiation and also shall be indicated in the contract (or order).
3.8 Surface quality
3.8.1 The bars-rods shall be free from corrosion spots, cracks and gas bubbles in their surfaces.
3.8.2 The bars-rods may have such defects as load modules with depth not exceeding the permissible negative deviation of diameter, scratches, oxidation tint, smooth black and white spots, and straightening traces in their surfaces. 3.8.3 The surface defects of bars-rods may be polished, however, the minimum diameter or thickness of bars-rods shall be ensured.
4 Test Methods
4.2.3 The diameter or width and thickness of bars-rods shall be measured by the measuring instrument with accuracy not less than 0.02mm; other dimensions shall be measured by measuring instruments with corresponding accuracy.
4.3 Mechanical properties
The inspection on the mechanical properties of longitudinal tensile at ambient temperature for bars-rods shall be carried out according to the method stated in GB/T 228. The inspection on the mechanical properties of persiste...

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