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GB/T 18983-2017 English PDF (GBT18983-2017)

GB/T 18983-2017 English PDF (GBT18983-2017)

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GB/T 18983-2017: Wire for quenched and tempered springs

This Standard specifies the classification and code, ordering content, diameter, appearance and permissible deviation, manufacturing method, technical requirements, test methods, inspection rules, package, mark and quality certificate of wire for quenched and tempered springs (hereinafter referred to as steel wire). This Standard is applicable to the carbon and low alloy quenched-tempered circularsection steel wire used for manufacturing various mechanical springs.
GB/T 18983-2017
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 77.140.65
H 49
Replacing GB/T 18983-2003
Wire for Quenched and Tempered Springs
(ISO 8458-3.2002, Steel Wire for Mechanical Springs ?€?
Part 3. Oil-Hardened and Tempered Wire, NEQ)
ISSUED ON. JULY 12, 2017
IMPLEMENTED ON. APRIL 01, 2018
Issued by. General Administration of Quality Supervision, Inspection and Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Classification and Code ... 7
4 Ordering Contents ... 7
5 Diameter, Appearance and Permissible Deviation ... 8
6 Manufacturing Method ... 8
7 Technical Requirements ... 9
8 Test Methods ... 14
9 Inspection Rules ... 15
10 Package, Mark and Quality Certificate ... 16
Appendix A (Informative) Correspondence between Codes and Steel Grades
... 18
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009.
This Standard replaced GB/T 18983-2003 Oil-Hardened and Tempered Steel Wire for Mechanical Springs. Compared with GB/T 18983-2003, this Standard has the major changes as follows.
--- Increase ?€?GB/T 4336, GB/T 13298, GB/T 20123, GB/T 20125?€? to the Normative References;
--- Increase ?€?ultra-high-strength?€? level to the Classification and Code; --- Modify the diameter range;
--- Increase the components to the new types of TDSiCr-B, TDSiCr-C and VDSiCrV to the chemical compositions;
--- Modify ?€?maximum surface decarburization allowable depth?€?;
--- Increase the mechanical property indexes of TDSiCr-B, TDSiCr-C to ?€?mechanical properties of steel wires in static grade and medium fatigue grade?€?;
--- Increase the mechanical property indexes of VDSiCrV to ?€?mechanical properties of steel wire in high fatigue grade?€?;
--- Modify ?€?allowable maximum depth of surface defect?€?; add description of the acid leaching test method.
This Part was prepared by using the redrafted law and referring to ISO 8458-3.2002 Steel Wire for Mechanical Springs ?€? Part 3. Oil-Hardened and Tempered Wire; the degree of consistency with ISO 8458-3.2002 is not equivalent.
This Standard was proposed by China Iron and Steel Industry Association. This Standard shall be under the jurisdiction of National Technical Committee for Standardization of Steel (SAC/TC 183).
Drafting organizations of this Standard. Sinosteel Zhengzhou Research Institute of Steel Wire Products Co., Ltd., Tianjin Metallurgical Group Zhongxing Shengda Steel Co., Ltd., Guangzhou Orsa Wire Science and Technology Co., Ltd., Baosteel Group Nantong Wire Products Co., Ltd., Jiangsu Shenwang Group Cable Co., Ltd., Taibo Steel Co., Ltd., and China Metallurgical Information and Standardization Institute. Chief drafting staffs of this Standard. Zhang Fengshan, Jiang Ling, Zhang Yongbo, Xing Xianqiang, Lin Xiuyan, Zhou Jianhua, Ren Cuiying, Wang Lingjun, Huang Wire for Quenched and Tempered Springs
1 Scope
This Standard specifies the classification and code, ordering content, diameter, appearance and permissible deviation, manufacturing method, technical requirements, test methods, inspection rules, package, mark and quality certificate of wire for quenched and tempered springs (hereinafter referred to as steel wire).
This Standard is applicable to the carbon and low alloy quenched-tempered circular- section steel wire used for manufacturing various mechanical springs.
2 Normative References
The following documents are essential to the application of this document. 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) are applicable to this document.
GB/T 222 Method of Sampling Steel for Determination of Chemical Composition and Permissible Variations for Product Analysis
GB/T 223.5 Methods for Chemical Analysis of Iron, Steel and Alloy - The Reduced Molybdosilicate Spectrophotometric Method for the Determination of Acid-Soluble Silicon Content
GB/T 223.11 Iron, Steel and Alloy - Determination of Chromium Content - Visual Titration or Potentiometric Titration Method
GB/T 223.13 Methods for Chemical Analysis of Iron, Steel and Alloy - The Ammonium Ferrous Sulfate Titration 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 223.58 Methods for Chemical Analysis of Iron, Steel and Alloy - The Extraction-Absorption Catalytic Polarographic Method for the Determination of Manganese Content
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 223.68 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 224 Determination of Depth of Decarburization of Steels
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 239.1 Metallic Materials - Wire - Part 1. Simple Torsion Test
GB/T 239.2 Metallic Materials - Wire - Part 2. Reverse Torsion Test
GB/T 2103 General Requirements for Acceptance, Packing, Marking and Quality Certification of Steel Wire
GB/T 2976 Metallic Materials ?€? Wire - Wrapping Test
GB/T 4336 Carbon and Low-Alloy Steel - Determination of Multi-Element Contents -Spark Discharge Atomic Emission Spectrometric Method (Routine Method)
GB/T 10561 Steel - Determination of Content of Nonmetallic Inclusions - Micrographic Method Using Standards Diagrams
GB/T 13928 Reciprocating Piston Mini-Type Air Compressor
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
10 Package, Mark and Quality Certificate
10.1 Package
10.1.1 The steel wire is generally delivered in coiled state or through wrapping around spools.
10.1.2 There is only one steel wire per plate or shaft.
10.1.3 The weight range for steel wire per plate or shaft shall be determined through the negotiation between the supplier and the purchaser, and indicated in the contract. 10.1.4 The packaging shall be generally performed as per the Type-III specified in GB/T 2103; if other types are required, they shall be indicated in the contract. 10.1.5 Other requirements for packaging shall be performed as per the provisions of GB/T 2103.
10.2 Mark
The outermost packaging of the steel wire shall be affixed with a label, the label shall be fixed, reliable, and clear written. It shall indicate the following contents at least. a) Supplier name and trademark;
b) Product name;
c) Grade;
d) Furnace (batch) number;
e) Diameter (specification);
f) Standard number;
g) Steel wire?€?s identification number;
h) Weight.
10.3 Quality certificate
Each batch of steel wires shall be attached with quality certificate; which shall include the following contents.
a) Full contents of product label;
b) Name of the purchaser;

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