Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by China Iron and Steel Association.
This standard is under the jurisdiction of National Technical Committee 183 on Iron and Steel of Standardization Administration of China (SAC/TC 183).
Hot rolled steel sheet and strip with resistance to fatigue for automobile wheel
1 Scope
This standard specifies the classification and designation expression methods, dimension, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certificate for hot rolled steel sheet and strip with resistance to fatigue for automobile wheel.
This standard is applicable to hot rolled steel strips and its sheared sheet (hereinafter referred to as steel sheet and strip) 1.6mm~25.4mm in thickness used for manufacturing automobile wheel spokes and rims with good resistance to fatigue.
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 222 Permissible tolerances for chemical composition of steel products
GB/T 223.3 Methods for chemical analysis of iron, steel and alloy - The diantipyrylmethane phosphomolybdate gravimetric method for the determination of phosphorus content
GB/T 223.5 Steel and iron - Determination of acid-soluble silicon and total silicon content - Reduced molybdosilicate spectrophotometric method
GB/T 223.9 Iron, steel and alloy - Determination of aluminium content - Chrome azurol S photometric 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 223.16 Methods for chemical analysis of iron, steel and alloy - The chromotropic acid photometric method for the determination of titanium 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 223.40 Iron, steel and alloy - Determination of niobium content by the sulphochlorophenol S spectrophotometric method
GB/T 223.59 Iron steel and alloy - Determination of phosphorus content - Bismuth phosphomolybdate blue spectrophotometric method and antimony phosphomolybdate blue spectrophotometric method
GB/T 223.60 Methods for chemical analysis of iron, steel and alloy - The perchloric acid dehydration gravimetric method for the determination of silicon content
GB/T 223.61 Methods for chemical analysis of iron, steel and alloy - The ammonium phosphomolybdate volumetric method for the determination of phosphorus 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 223.63 Methods for chemical analysis of iron, steel and alloy - The sodium (potassium) periodate photometric method for the determination of manganese content
GB/T 223.64 Iron steel and alloyed - Determination of manganese content - Flame atomic absorption spectrometric method
GB/T 223.67 Iron, steel and alloy - Determination of sulfur content - Methylene blue spectrophotometric method
GB/T 223.68 Methods for chemical analysis of iron, steel and alloy - The potassium iodate titration method after combustion in the pipe furnace for the determination of sulfur content
GB/T 223.69 Iron, steel and alloy - Determination of carbon contents - Gas-volumetric method after combustion in the pipe furnace
GB/T 223.71 Methods for chemical analysis of iron, steel and alloy - The gravimetric method after combustion in the pipe furnace for the determination of carbon content
GB/T 223.72 Iron steel and alloy - Determination of sulfur content - Gravimetric method
GB/T 223.76 Methods for chemical analysis of iron, steel and alloy The flame atomic absorption spectrometric method for the determination of vanadium content
GB/T 228.1 Metallic materials - Tensile testing - Part 1: Method of test at room temperature
GB/T 232 Metallic materials - Bend test
GB/T 247 General rule of package, mark and certification for steel plates (sheets) and strips
GB/T 709 Dimension, shape, weight and tolerance for hot-rolled steel strip, plate and sheet
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 17505 Steel and steel products - General technical delivery requirements
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
YB/T 081 Rule for rounding off of numberical values and judgment of testing values for technical standards of metallurgy
3 Classification and designation expression methods
3.1 Classification
3.1.1 By edge state:
a) Trimmed: EC;
b) Untrimmed: EM.
3.1.2 By thickness precision:
a) Ordinary precision: PT.A;
b) Higher precision: PT.B.
3.1.3 By surface treatment method:
a) Pickled surface;
b) Rolled surface.
3.1.4 By surface quality grade:
a) Ordinary grade surface: FA;
b) Superior grade surface: FB.
3.2 Designation expression methods
Designation of steel is composed of two parts: the lower limit value of tensile strength and the first letters of Chinese phonetic alphabet of "Lun Fu” (wheel spoke) or “Lun Wang” (wheel rim).
Example: 330LF or 330LW
330——the specified lower limit value of tensile strength, MPa;
LF——the first letters of Chinese phonetic alphabet of wheel spoke;
LW——the first letters of Chinese phonetic alphabet of wheel rim.
4 Order information
4.1 Contracts or orders made based on this standard shall cover the following items:
a) Standard No.;
b) Product name;
c) Designation;
d) Delivery weight (or quantity);
e) Dimension and thickness precision;
f) Delivery state;
g) Edge state;
h) Surface treatment method and surface quality grade;
i) Additional technical requirements.
4.2 If the items in 4.1 are not specified, the following requirements shall apply:
4.2.1 If surface treatment method is not specified, the products shall be delivered with rolled surface.
4.2.2 For the hot rolled steel sheets and strips delivered with rolled surface, if the thickness precision is not indicated, the products are delivered with average thickness precision; if the edge state is not indicated, the steel strips are delivered in untrimmed state and the steel sheets are delivered with trimmed state.
4.2.3 For hot rolled steel sheets and strips delivered with pickled surface, if the thickness precision, edge state, surface quality grade and oiled state are not indicated, the products shall be delivered with higher thickness precision, trimmed state, ordinary surface quality grade and oiled state.
5 Dimension, shape and weight
The dimension, shape, weight and tolerance of steels sheets and strips shall meet the requirements of GB/T 709. Steel sheets and strips with other dimensions, shapes, weights and tolerances may also be supplied upon negotiation between the supplier and the purchaser.
Foreword i
1 Scope
2 Normative references
3 Classification and designation expression methods
4 Order information
5 Dimension, shape and weight
6 Technical requirements
7 Test methods
8 Inspection rules
9 Packaging, marking and quality certificate
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by China Iron and Steel Association.
This standard is under the jurisdiction of National Technical Committee 183 on Iron and Steel of Standardization Administration of China (SAC/TC 183).
Hot rolled steel sheet and strip with resistance to fatigue for automobile wheel
1 Scope
This standard specifies the classification and designation expression methods, dimension, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certificate for hot rolled steel sheet and strip with resistance to fatigue for automobile wheel.
This standard is applicable to hot rolled steel strips and its sheared sheet (hereinafter referred to as steel sheet and strip) 1.6mm~25.4mm in thickness used for manufacturing automobile wheel spokes and rims with good resistance to fatigue.
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 222 Permissible tolerances for chemical composition of steel products
GB/T 223.3 Methods for chemical analysis of iron, steel and alloy - The diantipyrylmethane phosphomolybdate gravimetric method for the determination of phosphorus content
GB/T 223.5 Steel and iron - Determination of acid-soluble silicon and total silicon content - Reduced molybdosilicate spectrophotometric method
GB/T 223.9 Iron, steel and alloy - Determination of aluminium content - Chrome azurol S photometric 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 223.16 Methods for chemical analysis of iron, steel and alloy - The chromotropic acid photometric method for the determination of titanium 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 223.40 Iron, steel and alloy - Determination of niobium content by the sulphochlorophenol S spectrophotometric method
GB/T 223.59 Iron steel and alloy - Determination of phosphorus content - Bismuth phosphomolybdate blue spectrophotometric method and antimony phosphomolybdate blue spectrophotometric method
GB/T 223.60 Methods for chemical analysis of iron, steel and alloy - The perchloric acid dehydration gravimetric method for the determination of silicon content
GB/T 223.61 Methods for chemical analysis of iron, steel and alloy - The ammonium phosphomolybdate volumetric method for the determination of phosphorus 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 223.63 Methods for chemical analysis of iron, steel and alloy - The sodium (potassium) periodate photometric method for the determination of manganese content
GB/T 223.64 Iron steel and alloyed - Determination of manganese content - Flame atomic absorption spectrometric method
GB/T 223.67 Iron, steel and alloy - Determination of sulfur content - Methylene blue spectrophotometric method
GB/T 223.68 Methods for chemical analysis of iron, steel and alloy - The potassium iodate titration method after combustion in the pipe furnace for the determination of sulfur content
GB/T 223.69 Iron, steel and alloy - Determination of carbon contents - Gas-volumetric method after combustion in the pipe furnace
GB/T 223.71 Methods for chemical analysis of iron, steel and alloy - The gravimetric method after combustion in the pipe furnace for the determination of carbon content
GB/T 223.72 Iron steel and alloy - Determination of sulfur content - Gravimetric method
GB/T 223.76 Methods for chemical analysis of iron, steel and alloy The flame atomic absorption spectrometric method for the determination of vanadium content
GB/T 228.1 Metallic materials - Tensile testing - Part 1: Method of test at room temperature
GB/T 232 Metallic materials - Bend test
GB/T 247 General rule of package, mark and certification for steel plates (sheets) and strips
GB/T 709 Dimension, shape, weight and tolerance for hot-rolled steel strip, plate and sheet
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 17505 Steel and steel products - General technical delivery requirements
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
YB/T 081 Rule for rounding off of numberical values and judgment of testing values for technical standards of metallurgy
3 Classification and designation expression methods
3.1 Classification
3.1.1 By edge state:
a) Trimmed: EC;
b) Untrimmed: EM.
3.1.2 By thickness precision:
a) Ordinary precision: PT.A;
b) Higher precision: PT.B.
3.1.3 By surface treatment method:
a) Pickled surface;
b) Rolled surface.
3.1.4 By surface quality grade:
a) Ordinary grade surface: FA;
b) Superior grade surface: FB.
3.2 Designation expression methods
Designation of steel is composed of two parts: the lower limit value of tensile strength and the first letters of Chinese phonetic alphabet of "Lun Fu” (wheel spoke) or “Lun Wang” (wheel rim).
Example: 330LF or 330LW
330——the specified lower limit value of tensile strength, MPa;
LF——the first letters of Chinese phonetic alphabet of wheel spoke;
LW——the first letters of Chinese phonetic alphabet of wheel rim.
4 Order information
4.1 Contracts or orders made based on this standard shall cover the following items:
a) Standard No.;
b) Product name;
c) Designation;
d) Delivery weight (or quantity);
e) Dimension and thickness precision;
f) Delivery state;
g) Edge state;
h) Surface treatment method and surface quality grade;
i) Additional technical requirements.
4.2 If the items in 4.1 are not specified, the following requirements shall apply:
4.2.1 If surface treatment method is not specified, the products shall be delivered with rolled surface.
4.2.2 For the hot rolled steel sheets and strips delivered with rolled surface, if the thickness precision is not indicated, the products are delivered with average thickness precision; if the edge state is not indicated, the steel strips are delivered in untrimmed state and the steel sheets are delivered with trimmed state.
4.2.3 For hot rolled steel sheets and strips delivered with pickled surface, if the thickness precision, edge state, surface quality grade and oiled state are not indicated, the products shall be delivered with higher thickness precision, trimmed state, ordinary surface quality grade and oiled state.
5 Dimension, shape and weight
The dimension, shape, weight and tolerance of steels sheets and strips shall meet the requirements of GB/T 709. Steel sheets and strips with other dimensions, shapes, weights and tolerances may also be supplied upon negotiation between the supplier and the purchaser.
Contents of YB/T 4687-2018
Foreword i
1 Scope
2 Normative references
3 Classification and designation expression methods
4 Order information
5 Dimension, shape and weight
6 Technical requirements
7 Test methods
8 Inspection rules
9 Packaging, marking and quality certificate
