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GB/T 4240-2009 English PDF (GBT4240-2009)

GB/T 4240-2009 English PDF (GBT4240-2009)

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GB/T 4240-2009: Stainless steel wires

This Standard specifies the terms and definitions, ordering information, classification and designation, dimensions, appearance and permissible deviation, technical requirements, test methods, inspection rules, packing, marking and quality certificate of stainless steel wires.
GB/T 4240-2009
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 77.140.65
H 49
Replacing GB/T 4240-1993
Stainless Steel Wires
ISSUED ON. OCTOBER 30, 2009
IMPLEMENTED ON. MAY 01, 2010
Issued by. General Administration of Quality Supervision, Inspection and Quarantine (GAQSIQ);
Standardization Administration (SAC) of the People's
Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 8
4 Ordering Information ... 9
5 Classification and Designation ... 9
6 Dimension, Appearance and Permissible Deviation ... 10
7 Technical Requirements ... 11
8 Test Methods ... 17
9 Inspection Rules ... 17
10 Packing, Marking and Quality Certificate ... 18
Appendix A (Informative) Comparison of the Old, New and Foreign
Similar Designations ... 19
Appendix B (Informative) Technical Differences of this Standard with
ASTM A580-1998(2004) and Their Reasons ... 21
Foreword
This Standard modifies and adopts ASTM A580.1998 (2004) "Standard Speci???cation for Stainless Steel Wire" (English edition).
Due to the legal requirements and the special industrial needs of China, this Standard makes modifications when adopting ASTM A580.1998 (2004). The summary list of the technical differences and their reasons is given in Appendix B for reference. This Standard replaces GB/T 4240-1993 "Stainless Steel Wires". Compared with GB/T 4240-1993, the main changes of this Standard are listed as follows. ?€? The chapter of "Terms and Definitions" was added;
?€? Delivery conditions for parts of the designations were added;
?€? Provisions on the surface conditions were added;
?€? The diameter ranges were enlarged from 0.05mm~14.0mm to 0.05mm~16.0mm for soft steel wires; from 0.50mm~14.0mm to 0.30mm~16.0mm for lightly drawn steel wires; and from 0.50mm~6.00mm to 0.10mm~12.0mm for cold drawn
steel wires;
?€? The marking examples were deleted;
?€? The inner diameter of wire coils was enlarged;
?€? The representation method of designation was modified;
?€? The quantity of designations was increased from 23 to 36. Total seven designations, including Ocr19Ni9N, Y1Cr18Ni9Se, Ocr18Ni11Ti, OCr18Ni11Nb, 00Cr19Ni11, 1Cr17Ni2 and 9Cr18 were deleted; total 20 designations such as 12Cr17Mn6Ni5N were added;
?€? The chemical composition was modified;
?€? The mechanical properties were adjusted; parts of the indexes were tightened; ?€? Gauge length of tensile test samples was modified;
?€? "steel wires with nominal diameter less than 1.0mm, the elongation percentage is given only for your information" was added;
?€? Provisions on packing were modified;
?€? Appendix A and Appendix B were added.
Both Appendix A and Appendix B of this Standard are informative.
Stainless Steel Wires
1 Scope
This Standard specifies the terms and definitions, ordering information, classification and designation, dimensions, appearance and permissible deviation, technical requirements, test methods, inspection rules, packing, marking and quality certificate of stainless steel wires.
This Standard is applicable to stainless steel wires (hereinafter referred to as "steel wires"). However, this Standard does not applicable to austenite and PH stainless spring steel wires as well as the stainless steel wires for cold upsetting and welding. 2 Normative References
The following documents contain the provisions which, through reference in this text, constitute the provisions of this Standard. For the dated reference, the subsequent amendments (excluding correction) or revisions of these publications do not apply. However, the parties who enter into agreement according to this Standard are encouraged to study whether the latest editions of these documents are applicable. For undated normative references, the latest edition is applicable to this Standard. 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 223.4 Alloyed Steel - Determination of Manganese Content - Potentiometric or Visual Titration Method
GB/T 223.5 Steel and Iron - Determination of Acid-soluble Silicon and Total Silicon Content - Reduced Molybdosilicate Spectrophotometric Method
GB/T 223.8 Methods for Chemical Analysis of Iron, Steel and Alloy - The Sodium Fluoride Separation-EDTA Titration Method for the Determination of Aluminium Content
GB/T 223.11 Methods for Chemical Analysis of Iron, Steel and Alloy - The Ammonium Persulfate Oxidation Volumetric Method for the Determination of Chromium Content
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/T223.28 Methods for Chemical Analysis of Iron, Steel and Alloy - The D-denzoinoxime 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 223.37 Methods for Chemical Analysis of Iron, Steel and Alloy - The Indophenal Blue Photometric Methods 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 223.58 Methods for Chemical Analysis of Iron, Steel and Alloy - The Sodium Arsenite-sodium Nitrite Titrimetric Method for the Determination of Manganese Content
GB/T 223.59 Methods for Chemical Analysis of Iron, Steel and Alloy - The Reduced Molybdoantimonyl Phosphoric Acid Photometric Method for the
Determination of Phosphorus Content
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 223.67 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 228 Metallic Materials-Tensile Testing at Ambient Temperature (GB/T 228-2002, eqv ISO 6892.1998)
GB/T 342-1997 Dimension Shape Mass and Tolerance for 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 3207-2008 Bright Steel
GB/T 4334 Corrosion of Metals and Alloys - Test Methods for Intergranular Corrosion of Stainless Steels
GB/T 4356 Stainless Steel Wire Rods
GB/T 11170 Method for Photoelectric Emission Spectroscopic Analysis of
Stainless Steel
GB/T 20066 Steel and Iron-Sampling and Preparation of Samples for the
Determination of Chemical Composition (GB/T 20066-2006, ISO 14284.1996, IDT) 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 20123-2006, ISO 15350. 2000, IDT)
GB/T 20124 Steel and Iron - Determination of Nitrogen Content - Thermal Conductimetric Method after Fusion in a Current of Inert Gas (GB/T 20124-2006, ISO 15351.1999, IDT)
3 Terms and Definitions
For the purpose of this Standard, the following terms...

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