This standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation and storage, quality certificates and order (contract) contents of the aluminium and aluminium alloy sheets and strips used for motor.
This standard is applicable to the aluminium and aluminum alloy sheets (hereinafter referred to as “sheets”) and the aluminium and aluminum alloy strips (hereinafter referred to as “strips”) for motor cover panels, motor body structurals, station wagon skin panels (hereinafter referred to as skin panels).
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 1031 Geometrical product specifications (GPS) - Surface texture: Profile method - Surface roughness parameters and their values
GB/T 3190 Wrought aluminium and aluminium alloy - Chemical composition
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 3880.1 Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering - Part 1: Technical conditions of delivery
GB/T 3880.2 Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering - Part 2: Mechanical properties
GB/T 3880.3-2012 Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering - Part 3: Tolerances on forms and dimensions
GB/T 4780 Terms for motor vehicle body
GB/T 5027 Metallic materials - Sheet and strip - Determination of plastic strain ratio
GB/T 5028 Metallic materials - Sheet and strip - Determination of tensile strain hardening exponent
GB/T 7999 Optical emission spectrometric analysis method of aluminum and aluminum alloys
GB/T 8013.3 Anodic oxide coatings and organic polymer coatings on aluminium and its alloys - Part 3: Organic polymer coatings
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 12160 Calibration of extensometers used in uniaxial testing
GB/T 16825.1 Verification of static uniaxial testing machines - Part 1: Tension/compression testing machines - Verification and calibration of the force-measuring system
GB/T 16865 Test pieces and method for tensile test for wrought aluminium and magnesium alloys products
GB/T 17432 Methods for sampling for analyzing the chemical composition of wrought aluminum and aluminum alloys
GB/T 20975 (All parts) Methods for chemical analysis of aluminium and aluminium alloys
GB/T 24171.2 Metallic materials - Sheet and strip - Determinations of forming limit curves - Part 2: Determinations of forming limit curves in laboratory
GB/T 26492.3 Defects for wrought aluminium and aluminium alloys ingots and products - Part 3:Defects for plates, sheets and strips
JJG 139 Tension, Compression and Universal Testing Machines
3 Requirements
3.1 Product classification
3.1.1 Designation, state, dimension and specification
The designations, supply states, dimensions and specifications of the product shall meet those specified in Table 1. Other designations, states, dimensions and specifications, if necessary, shall be determined by the supplier and the purchaser through negotiation and be indicated in the order (contract).
GB/T 33227-2016 The following standards are cited：
