HOME   Cart(0)   Quotation   About-Us Tax PDFs Standard-List Powered by Google www.ChineseStandard.net Database: 189759 (9 Feb 2025)

GB/T 24588-2019 PDF English


Search result: GB/T 24588-2019 English: PDF (GB/T24588-2019)
Standard IDContents [version]USDSTEP2[PDF] delivered inName of Chinese StandardStatus
GB/T 24588-2019English145 Add to Cart 0-9 seconds. Auto-delivery. Stainless steel spring wires Valid
GB/T 24588-2009English479 Add to Cart 3 days Stainless steel wires for spring Obsolete
BUY with any currencies (Euro, JPY, GBP, KRW etc.): GB/T 24588-2019     Related standards: GB/T 24588-2019

PDF Preview: GB/T 24588-2019


GB/T 24588-2019: PDF in English (GBT 24588-2019)

GB/T 24588-2019 NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.140.65 H 49 Replacing GB/T 24588-2009 Stainless steel spring wires ISSUED ON: JUNE 04, 2019 IMPLEMENTED ON: MAY 01, 2020 Issued by: State Administration for Market Regulation; Standardization Administration of the People's Republic of China. Table of Contents Foreword ... 3  1 Scope ... 5  2 Normative references ... 5  3 Terms and definitions ... 7  4 Order content ... 7  5 Designation and group ... 8  6 Size, shape, weight and allowable deviation ... 8  7 Technical requirements ... 9  8 Test methods ... 15  9 Inspection rules ... 15  10 Packaging, marks and quality certificate ... 17  Annex A (informative) Comparison between designations of this Standard and designations home and abroad ... 18  Foreword This Standard was drafted in accordance with the rules given in GB/T 1.1-2009. This Standard replaces GB/T 24588-2009 “Stainless steel wires for spring”. Compared with GB/T 24588-2009, main technical changes are as follows: - tightened requirements for allowable diameter deviation of steel wires (see 6.2 of this Edition, 6.2 of Edition 2009); - added 4 designations: 07Cr19Ni10, 06Cr18Ni11Ti, 12Cr18Mn12Ni2N and 04Cr12Ni8Cu2TiNb as well as relevant requirements (see Table 1, Table 4, Table 5, Table 6 and Table 7 of this Edition, Table 1, Table 4 and Table 5 of Edition 2009); - modified representation modes for some designations: modified 06Cr19Ni9 to 06Cr19Ni10, 06Cr19Ni9N to 06Cr19Ni10N, 12Cr17Mn8Ni3Cu3N to 12Cr16Mn8Ni3Cu3N (see Table 1, Table 4, Table 5 of this Edition, Table 1, Table 4, Table 5 of Edition 2009); - tightened nitrogen content of 12Cr18Mn9Ni5N and 12Cr16Mn8Ni3Cu3N, from 0.05%~0.30% to 0.05%~0.25% (see Table 4 of this Edition, Table 4 of Edition 2009); - expanded size range of steel wire twist test; modified nominal diameter from 0.50mm~4.00mm to 0.50mm~6.00mm (see 7.5.1 of this Edition, 7.5.1 of Edition 2009); - modified requirements for surface state of steel wires (see 7.2.2 of this Edition, 7.2.2 of Edition 2009); - added technical requirements and methods for intergranular corrosion test of austenitic stainless steel (see 7.7 and Table 8 of this Edition); - added comparison between different editions of designations of this Standard (see Annex A of this Edition). This Standard was proposed by China Iron and Steel Association. This Standard shall be under the jurisdiction of National Technical Committee on Steels of Standardization Administration of China (SAC/TC 183). The drafting organizations of this Standard: Northeast Special Steel Group Co., Ltd., Jiangyin Falsheng Shengsheng Stainless Steel Products Co., Ltd., Jiangsu Shenyuan Group Co., Ltd., Zhejiang Qingshan Iron and Steel Co., Ltd., Zhejiang Tenglong Fine Line Co., Ltd., Jiangsu Xinghuo Special Steel Co., Ltd., Stainless steel spring wires 1 Scope This Standard specifies terms and definitions, order content, designations and groups, size, shape, weight and allowable deviation, technical requirements, test methods, inspection rules, packaging, marks and quality certificate for stainless steel spring wires. This Standard is applicable to Austenitic and precipitation-hardening stainless- steel spring wires that are used to make springs (hereinafter referred to as steel wires). 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, Method of sampling steel for determination of chemical composition and permissible variations for product analysis GB/T 223.4, Alloyed steel - Determination of manganese content - Potentiometric or visual titration method 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 223.8, Methods for chemical analysis of iron, steel and alloy - The sodium fluoride separation - EDTA titration method for the determination of aluminum content GB/T 223.11, Iron, Steel and Alloy - Determination of Chromium Content - Visual Titration or Potentiometric Titration Method GB/T 223.17, Methods for chemical analysis of iron, steel and alloy - The diantipyrylmethane photometric method for the determination of titanium content GB/T 223.18, Methods for Chemical Analysis of Iron, Steel and Alloy - The Sodium Thiosulfate Separation Iodimetric 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 223.25, Methods for chemical analysis of iron, steel and alloy - The dimethylglyoxime gravimetric method for the determination of nickel content GB/T 223.26, Iron, Steel and Alloy - Determination of Molybdenum Content - The Thiocyanate Spectrophotometric Method GB/T 223.28, Methods for chemical analysis of iron, steel and alloy - The α- benzoinoxime gravimetric method for the determination of molybdenum content GB/T 223.36, Methods for chemical analysis of iron, steel and alloy - The neutral titration method for the determination of nitrogen content after distillation separation 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 223.64, Iron, Steel and Alloy - Determination of Manganese Content - Flame Atomic Absorption Spectrometric Method GB/T 223.85, Steel and iron - Determination of sulfur content - Infrared absorption method after combustion in an induction furnace GB/T 223.86, Steel and iron - Determination of total carbon content - Infrared absorption method after combustion in an induction furnace GB/T 228.1, Metallic materials - Tensile testing - Part 1: Method of test at room temperature GB/T 238, Metallic materials - Wire - Reverse bend test GB/T 239.1, Metallic materials - Wire - Part 1: Simple torsion test GB/T 342-2017, Dimension, shape, mass and tolerance of cold-drawn round square and hexagonal steel wires GB/T 2103-2008, General requirements for acceptance, packing, marking and quality certification of steel wire GB/T 2976, Metallic materials - Wire - Wrapping test GB/T 4240, Stainless steel wires GB/T 4334-2008, Corrosion of metals and alloys - Test methods for intergranular corrosion of stainless steels GB/T 4356, Stainless steel wire rods GB/T 11170, Stainless steel - Determination of multi-element contents - Spark discharge atomic emission spectrometric method (Routine method) 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 20124, Steel and iron - Determination of nitrogen content - Thermal conductimetric method after fusion in a current of inert gas GB/T 20878, Stainless and heat-resisting steels - Designation and chemical composition 3 Terms and definitions For the purposes of this document, the terms and definitions defined in GB/T 4240, GB/T 20878 as well as the followings apply. 3.1 pitch Take a few circles of wire from coil or spool to make them in a free state. Then take a full circle of wire from them and take its midpoint in an unconstrained vertical suspension. The distance between two ends of wire at circle axis direction is called pitch. 3.2 diameter of free ring Take a few circles of wire from coil or spool to make them in a free state. Then take a full circle of wire from them and place unconstrained on a horizontal plane. Outer diameter of traveler is diameter of free ring. 4 Order content Order contract or order sheet according to this Standard shall include the following information: 7.6 Surface quality Steel wire surface shall be free from defects that are harmful to use such as scars, folds, cracks, burrs, pits, scratches and scales. However, it is allowed to have individual pitting and scratches of which depth does not exceed half of dimensional tolerance. Straight-strip steel wire surface allows presence of spirals and lubricant residues. 7.7 Special requirements According to purchaser’s requirements, Austenitic stainless-steel wires of which nominal diameter is greater than 1.00mm can be subject to intergranular corrosion test. Test methods are agreed by supplier and purchaser and indicated in contract. 8 Test methods Test items and test methods of steel wires shall comply with provisions of Table 8. 9 Inspection rules 9.1 Inspection and acceptance 9.1.1 Exit-factory inspection and acceptance of steel wires are carried out by quality department of supplier. 9.1.2 Inspection and acceptance of steel wires shall comply with provisions of GB/T 2103-2008. 9.2 Batching rules Steel wires are checked and accepted in batches. Each batch consists of steel wires of same designation, of same furnace number, of same size and of same delivery state. 9.3 Sampling quantity and sampling position Sampling quantity and sampling position of each batch of steel wires shall comply with provisions of Table 8. 9.4 Rules for re-inspection and determination Rules for re-inspection and determination of steel wires shall comply with provisions of GB/T 2103-2008. When test results of mechanical properties and process properties fail, remove a certain length of steel wire coil from both ends ......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.