GB/T 6892-2023 English PDF (GBT6892-2023)

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GB/T 6892-2023: Wrought aluminium and aluminium alloys extruded profiles for general engineering
GB/T 6892-2023
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.150.10
CCS H 61
Replacing GB/T 6892-2015
Wrought aluminum and aluminum alloys extruded profiles
for general engineering
ISSUED ON: SEPTEMBER 07, 2023
IMPLEMENTED ON: APRIL 01, 2024
Issued by: State Administration for Market Regulation.
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 6
2 Normative references ... 6
3 Terms and definitions ... 8
4 Product classification ... 8
5 Technical requirements ... 17
6 Test methods ... 24
7 Inspection rules ... 27
8 Marking, packaging, transportation, storage, quality certificate ... 33
9 Contents of order form (or contract) ... 34
Appendix A (Informative) Guidelines for selection of decorative and general protective
films ... 35
Appendix B (Informative) Dimensional measurement method - Three-dimensional
coordinate measuring instrument method ... 39
Appendix C (Normative) Test method of pin-type support ... 41
Appendix D (Informative) Contents of order form (or contract) ... 48
References ... 56
Wrought aluminum and aluminum alloys extruded profiles
for general engineering
1 Scope
This document specifies the product classification, technical requirements, test methods,
inspection rules, signs, packaging, transportation, storage, quality certificates and order
forms (or contracts) of wrought aluminum and aluminum alloys extruded profiles for
general engineering.
This document is suitable for aluminum and aluminum alloy profiles for general
engineering (hereinafter referred to as profiles).
2 Normative references
The provisions in following documents become the provisions of this Standard through
reference in this Standard. For the dated documents, only the versions with the dates
indicated are applicable to this document; for the undated documents, only the latest
version (including all the amendments) is applicable to this standard.
GB/T 231.1 Metallic materials - Brinell hardness test - Part 1: Test method
GB/T 232 Metallic materials - Bend test
GB/T 3190 Chemical composition of wrought aluminium and aluminium alloys
GB/T 3199 Wrought aluminium and aluminium alloy products - Packing, marking,
transporting and storing
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 3251 Compression test method for aluminium and aluminium alloy products
GB/T 5237.2 Wrought aluminium alloy extruded profiles for architecture - Part 2:
Anodized profiles
GB/T 5237.3 Wrought aluminium alloy extruded profiles for architecture - Part 3:
Electrophoretic coating profiles
GB/T 26492.5 Defects for wrought aluminium and aluminium alloys ingots and
products - Part 5: Defects for tubes, rods or bars, profiles, wires
GB/T 32790 Methods for evaluating the weld quality of seam welds in aluminium
and aluminium alloy extrusion
GB/T 34487 Shear testing method of aluminium alloy products for structural
members
GB/T 37616 Aluminium alloys extruded profiles-axial force controlled fatigue
testing method
GB/T 42914 Test method for fracture toughness of aluminium alloy products
GB/T 42916 Identification marking of aluminium and aluminium alloy products
JJG 475 Verification regulation of electronic universal testing machine
YS/T 1630.1-2023 Aviation aluminum alloy pipe, rod, profile - Part 1: 7050
aluminum alloy profile
ISO 15614-2 Specification and qualification of welding procedures for metallic
materials - Welding procedure test - Part 2: Arc welding of aluminum and its alloys
ISO 25239-4 Friction stir welding - Aluminum - Part 4: Specification and
qualification of welding procedures
3 Terms and definitions
The terms and definitions, which are defined in GB/T 8005.1 and GB/T 26492.5, are
applicable to this document.
4 Product classification
4.1 Composition category
The profile is divided into category I and II, according to the composition, as shown in
Table 1.
7 Inspection rules
7.1 Inspection and acceptance
7.1.1 The product shall be inspected by the supplier, to ensure that the product quality
complies with the provisions of this document and the order form (or contract),
meanwhile a quality certificate shall be filled out.
7.1.2 The purchaser shall inspect the received products, in accordance with the
provisions of this document. If the inspection results are inconsistent with the
provisions of this document and the order form (or contract), it shall be submitted to
the supplier in writing, to be resolved through negotiation between the supplier and the
buyer. Objections related to surface quality and dimensional deviation shall be raised,
within 1 month from the date of receipt of the product. Objections to other performance
shall be raised, within 3 months from the date of receipt of the product. If arbitration is
needed, it can be entrusted to an organization, as recognized by both the supplier and
the buyer; sampling can be done jointly at the buyer's premises.
7.2 Group-batching
Products shall be submitted for acceptance in batches. Each batch shall be composed of
products of the same designation, status, size specifications, film layer code, surface
treatment process. When the purchaser requires group-batching according to melting
number and heat treatment furnaces, this shall be noted in the order form (or contract).
7.3 Weighting
Products shall be checked by weight.
7.4 Inspection items and process assurance items
Where there are no special requirements specified in the order form (or contract), the
product exit-factory inspection items, periodic inspection items, process assurance
items shall comply with the provisions of Table 12.
7.6.1 Chemical composition
When the chemical composition of any specimen fails, if the melting order of the profile
can be distinguished, the melting order profile represented by the specimen will be
judged to be unqualified; other melting order profiles will be inspected in sequence, the
qualified ones will be delivered. If the melting order cannot be distinguished, the batch
of profiles is deemed to be unqualified.
7.6.2 Size deviation
If the size deviation of any specimen fails, the batch of profiles will be deemed
unqualified. However, suppliers are allowed to inspect one by one; those that pass the
standard will be delivered.
7.6.3 Tensile mechanical properties at room temperature, compression properties,
bending properties, shear properties, fatigue properties, pin-type support, stress
corrosion resistance, spalling corrosion resistance, intergranular corrosion
sensitivity, salt spray corrosion resistance, welding performance
7.6.3.1 If any specimen fails, the batch (or heat treatment furnace number) of profiles
will be deemed to be unqualified OR shall be implemented in accordance with 7.6.3.2.
7.6.3.2 If the heat treatment furnace number can be distinguished for the profile, it shall
take double quantity of specimens from the heat treatment furnace number, which is
represented by the specimen, to conduct repeated tests on the unqualified item. If the
heat treatment furnace number cannot be distinguished, it shall take double quantity of
specimens from the batch of profiles again, to repeat the test on the unqualified item
(includi...