GJB 2150A-2018 Specification for hot-rolled alloy structure steel sheets and plates for aviation
1 Scope
This specification specifies the detailed requirements for hot-rolled alloy structure steel sheets and plates for aviation.
This specification is applicable to hot-rolled alloy structure steel sheets and plates for aviation with a nominal thickness of 1mm to 100mm. The thickness of steel sheets and plates intended for stamping shall not exceed 10mm.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this specification. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this specification. However parties using this specification are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 222-2006 Permissible tolerances for chemical composition of steel products
GB/T 223.5 Steel and iron - Determination of acid-soluble silicon and total silicon content - Reduced molybdosilicate spectrophotometric method
GB/T 223.11 Iron, steel and alloy - Determination of chromium content - Visual titration or potentiometric titration method
GB/T 223.14 Methods for chemical analysis of iron, steel and alloy - The N-benzoy-N-phenylhydroxylamine extraction photometric method for the determination of vanadium content
GB/T 223.19 Methods for chemical analysis of iron, steel and alloy - The neocuproine-chloroform extraction photometric method for the determination of copper content
GB/T 223.23 Iron, steel and alloy - Determination of nickel content - The dimethylglyoxime spectrophotometric method
GB/T 223.26 Iron, steel and alloy - Determination of molybdenum content - The thiocyanate spectrophotometric method
GB/T 223.43 Iron, steel and alloy - Determination of tungsten content - Gravimetric method and spectrophotometric method
GB/T 223.58 Methods for chemical analysis of iron, steel and alloy - The sodium arsenite-sodium nitrite titrimetric method for the determination of manganese content
GB/T 223.62 Methods for chemical analysis of iron, steel and alloy - The butyl acetate extraction photometric method for the determination of phosphorus content
GB/T 223.69 Iron, steel and alloy - Determination of carbon contents - Gas-volumetric method after combustion in the pipe furnace
GB/T 223.72 Iron, steel and alloy - Determination of sulfur content - Gravimetric method
GB/T 223.75 Iron, steel and alloy - Determination of boron content - Methanol distillation-curcumin photometric method
GB/T 223.79 Iron and steel - Determination of multi-element contents - X-ray fluorescence spectrometry (Routine method)
GB/T 224 Determination of the depth of decarburization of steels
GB/T 226 Test method for macrostructure and defect of steel by etching
GB/T 228.1-2010 Metallic materials - Tensile testing - Part 1: Method of test at room temperature
GB/T 229 Metallic materials - Charpy pendulum impact test method
GB/T 231.1 Metallic materials - Brinell hardness test - Part 1: Test method
GB/T 232 Metallic materials - Bend testing method
GB/T 247 General rule of package, mark and certification for steel plates (sheets) and strips
GB/T 709-2006 Dimension, shape, weight and tolerances for hot-rolled steel plates and sheets
GB/T 1979 Standard diagrams for macrostructure and defect of structural steels
GB/T 2970 Method for ultrasonic testing of thicker steel plates
GB/T 2975 Steel and steel products - Location and preparation of samples and test pieces for mechanical testing
GB/T 4336 Carbon and low-alloy steel - Determination of multi-element contents - Spark discharge atomic emission spectrometric method (routine method)
GB/T 6394 Determination of estimating the average grain size of metal
GB/T 7736 Ultrasonic inspecting method for macro-structure and imperfection of steel
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 8651 Flaw detection method by the ultrasonic plate wave for metal plates
GB/T 10561 Determination of content of nonmetallic inclusions in steel - Micrographic method using standard diagrams
GB/T 13298 Inspection methods of microstructure for metals
GB/T 13299 Steel - Determination of microstructure
GB/T 20066 Steel and iron - Sampling and preparation of samples for the determination of chemical composition
GB/T 20123 Steel and iron - Determination of total carbon and sulfur content - Infrared absorption method after combustion in an induction furnace (routine method)
GB/T 20125 Low-alloy steel - Determination of multi-element contents - Inductively coupled plasma atomic emission spectrometric method
GB/T 21834 Medium and low alloy steel - Determination of the distribution of multi-element contents - Original position statistic distribution analysis method
GB/T 22368 Low-alloy steel - Determination of multi-element contents - Glow discharge optical emission spectrometry (Routine method)
3 Requirements
3.1 Smelting method
Steel shall be smelted by electric arc furnace (or converter) + secondary refining, or electric arc furnace (or converter) + electroslag remelting. As agreed by the supplier and the purchaser and indicated in the contract, other smelting methods may also be adopted.
3.2 Designation and chemical composition
3.2.1 The designation and chemical composition (melting analysis) of steel shall meet those specified in Table 1.
Table 1 Designation and chemical composition
GJB 2150A-2018 Specification for hot-rolled alloy structure steel sheets and plates for aviation
1 Scope
This specification specifies the detailed requirements for hot-rolled alloy structure steel sheets and plates for aviation.
This specification is applicable to hot-rolled alloy structure steel sheets and plates for aviation with a nominal thickness of 1mm to 100mm. The thickness of steel sheets and plates intended for stamping shall not exceed 10mm.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this specification. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this specification. However parties using this specification are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 222-2006 Permissible tolerances for chemical composition of steel products
GB/T 223.5 Steel and iron - Determination of acid-soluble silicon and total silicon content - Reduced molybdosilicate spectrophotometric method
GB/T 223.11 Iron, steel and alloy - Determination of chromium content - Visual titration or potentiometric titration method
GB/T 223.14 Methods for chemical analysis of iron, steel and alloy - The N-benzoy-N-phenylhydroxylamine extraction photometric method for the determination of vanadium content
GB/T 223.19 Methods for chemical analysis of iron, steel and alloy - The neocuproine-chloroform extraction photometric method for the determination of copper content
GB/T 223.23 Iron, steel and alloy - Determination of nickel content - The dimethylglyoxime spectrophotometric method
GB/T 223.26 Iron, steel and alloy - Determination of molybdenum content - The thiocyanate spectrophotometric method
GB/T 223.43 Iron, steel and alloy - Determination of tungsten content - Gravimetric method and spectrophotometric method
GB/T 223.58 Methods for chemical analysis of iron, steel and alloy - The sodium arsenite-sodium nitrite titrimetric method for the determination of manganese content
GB/T 223.62 Methods for chemical analysis of iron, steel and alloy - The butyl acetate extraction photometric method for the determination of phosphorus content
GB/T 223.69 Iron, steel and alloy - Determination of carbon contents - Gas-volumetric method after combustion in the pipe furnace
GB/T 223.72 Iron, steel and alloy - Determination of sulfur content - Gravimetric method
GB/T 223.75 Iron, steel and alloy - Determination of boron content - Methanol distillation-curcumin photometric method
GB/T 223.79 Iron and steel - Determination of multi-element contents - X-ray fluorescence spectrometry (Routine method)
GB/T 224 Determination of the depth of decarburization of steels
GB/T 226 Test method for macrostructure and defect of steel by etching
GB/T 228.1-2010 Metallic materials - Tensile testing - Part 1: Method of test at room temperature
GB/T 229 Metallic materials - Charpy pendulum impact test method
GB/T 231.1 Metallic materials - Brinell hardness test - Part 1: Test method
GB/T 232 Metallic materials - Bend testing method
GB/T 247 General rule of package, mark and certification for steel plates (sheets) and strips
GB/T 709-2006 Dimension, shape, weight and tolerances for hot-rolled steel plates and sheets
GB/T 1979 Standard diagrams for macrostructure and defect of structural steels
GB/T 2970 Method for ultrasonic testing of thicker steel plates
GB/T 2975 Steel and steel products - Location and preparation of samples and test pieces for mechanical testing
GB/T 4336 Carbon and low-alloy steel - Determination of multi-element contents - Spark discharge atomic emission spectrometric method (routine method)
GB/T 6394 Determination of estimating the average grain size of metal
GB/T 7736 Ultrasonic inspecting method for macro-structure and imperfection of steel
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 8651 Flaw detection method by the ultrasonic plate wave for metal plates
GB/T 10561 Determination of content of nonmetallic inclusions in steel - Micrographic method using standard diagrams
GB/T 13298 Inspection methods of microstructure for metals
GB/T 13299 Steel - Determination of microstructure
GB/T 20066 Steel and iron - Sampling and preparation of samples for the determination of chemical composition
GB/T 20123 Steel and iron - Determination of total carbon and sulfur content - Infrared absorption method after combustion in an induction furnace (routine method)
GB/T 20125 Low-alloy steel - Determination of multi-element contents - Inductively coupled plasma atomic emission spectrometric method
GB/T 21834 Medium and low alloy steel - Determination of the distribution of multi-element contents - Original position statistic distribution analysis method
GB/T 22368 Low-alloy steel - Determination of multi-element contents - Glow discharge optical emission spectrometry (Routine method)
3 Requirements
3.1 Smelting method
Steel shall be smelted by electric arc furnace (or converter) + secondary refining, or electric arc furnace (or converter) + electroslag remelting. As agreed by the supplier and the purchaser and indicated in the contract, other smelting methods may also be adopted.
3.2 Designation and chemical composition
3.2.1 The designation and chemical composition (melting analysis) of steel shall meet those specified in Table 1.
Table 1 Designation and chemical composition
