GB/T 4240-2019_English: PDF (GB/T4240-2019)
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| Standard ID | GB/T 4240-2019 (GB/T4240-2019) | | Description (Translated English) | Stainless steel wires | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H49 | | Classification of International Standard | 77.140.65 | | Word Count Estimation | 22,247 | | Date of Issue | 2019-06-04 | | Date of Implementation | 2020-01-01 | | Drafting Organization | Northeast Special Steel Group Co., Ltd., Zhejiang Tenglong Fine Wire Co., Ltd., Jiangyin Farsheng Hongsheng Stainless Steel Products Co., Ltd., Jiangsu Shenyuan Group Co., Ltd., Jiangsu Spark Special Steel Co., Ltd., Zhejiang Qingshan Iron and Steel Co., Ltd., Nantong Songcheng Industry Co., Ltd., Institute of Metallurgical Industry Information Standards | | Administrative Organization | National Steel Standardization Technical Committee (SAC/TC 183) | | Proposing organization | China Iron and Steel Association | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | | Standard ID | GB/T 4240-2009 (GB/T4240-2009) | | Description (Translated English) | Stainless steel wires | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H49 | | Classification of International Standard | 77.140.65 | | Word Count Estimation | 16,128 | | Date of Issue | 2009-10-30 | | Date of Implementation | 2010-05-01 | | Older Standard (superseded by this standard) | GB/T 4240-1993 | | Quoted Standard | GB/T 222; GB/T 223.3; GB/T 223.4; GB/T 223.5; GB/T 223.8; GB/T 223.11; GB/T 223.17; GB/T 223.18; GB/T 223.23; GB/T 223.25; GB/T 223.26; GB/T 223.28; GB/T 223.36; GB/T 223.37; GB/T 223.40; GB/T 223.58; GB/T 223.59; GB/T 223.60; GB/T 223.61; GB/T 223.62; GB/T 223.63; GB/T 223.67; GB/T 223.68; GB/T 223.69; GB/T 223.71; GB/T 223.72; GB/T 228; GB/T 342-1997; GB/T 2103-2008; GB/T 3207-2008; GB/T 4334; GB/T 4356; GB/T 11170; GB/T 20066; GB/T 20123; GB/T 20124 | | Adopted Standard | ASTM A580-1998 (2004), MOD | | Drafting Organization | Dongbei Special Steel Group Co., Ltd. | | Administrative Organization | National Steel Standardization Technical Committee | | Regulation (derived from) | National Standard Approval Announcement 2009 No.12 (Total No.152) | | Proposing organization | China Iron and Steel Association | | Issuing agency(ies) | Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China | | Summary | This standard specifies the terms and definitions of stainless steel wire, ordering content, classification and grades, dimensions, test methods, , shape and tolerances, technical requirements for inspection rules, packaging, marking and quality certification. This standard applies to stainless steel wire (hereinafter referred to as wire), but does not include austenitic and precipitation hardening stainless spring steel wire, cold forging and welding with stainless steel wire. | | Standard ID | GB/T 4240-1993 (GB/T4240-1993) | | Description (Translated English) | Stainless steel wires | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H49 | | Classification of International Standard | 77.140.60 | | Word Count Estimation | 5,567 | | Date of Issue | 1993/6/1 | | Date of Implementation | 1994/1/1 | | Older Standard (superseded by this standard) | GB 4240-1984 | | Quoted Standard | GB 222; GB 223; GB 228; GB 342 | | Regulation (derived from) | Announcement of Newly Approved National Standards 2009 No. (No. 152 overall) 12 | | Proposing organization | Ministry of Metallurgical Industry of the People Republic of China | | Issuing agency(ies) | State Bureau of Technical Supervision |
GB/T 4240-2019
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.65
H 49
Replacing GB/T 4240-2009
Stainless Steel Wires
ISSUED ON: JUNE 04, 2019
IMPLEMENTED ON: JANUARY 01, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 7
4 Ordering Contents ... 8
5 Classification, Designation and Code... 8
6 Dimension and Shape ... 9
7 Technical Requirements ... 10
8 Test Methods ... 19
9 Inspection Rules ... 19
10 Packaging, Marking and Quality Certificate ... 21
Appendix A (Informative) Comparison between Designation in this Standard
and Domestic & Foreign Designations ... 22
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009.
This Standard replaced GB/T 4240-2009 Stainless Steel Wires.
Compared with GB/T 4240-2009, this Standard has the major technical changes as
follows:
--- The structural category has been expanded from three categories in the original
standard to four categories; add “austenite-ferrite type” (see Tables 1 and 3 of
this Edition; Tables 1 and 3 of 2009 Edition);
--- Tighten the allowable deviation of the steel wire size (see 6.2 of this Edition; 6.2
of 2009 Edition);
--- Tighten the allowable deviation of the steel wire length (see 6.6 of this Edition;
6.6 of 2009 Edition);
--- Add the chemical composition and relevant requirements for 6 designations such
as O7Cr19Ni10, 06Cr18Ni11Ti, 022Cr23Ni5Mo3N, 026Cr24, 06Cr13,
14Cr17Ni2; delete the relevant requirements and the designation of 21Cr17Ni2
(see Tables 1, 3, 4, 5, 6 of this Edition; and Tables 1, 3, 4, 5, 6 of 2009 Edition);
--- Supplement the mechanical properties of some designations for the soft state of
steel wire (see Table 4 of this Edition; Table 4 of 2009 Edition);
--- Modify the requirements for the surface condition of the steel wire (see 7.2.3 of
this Edition; 7.2.3 of 2009 Edition);
--- Add technical requirements and methods for intergranular corrosion test of
austenitic stainless-steel wire (see 7.5.2 and Table 7 of this Edition);
--- Add comparison of different designations of this Standard (see Appendix A).
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: Dongbei Special Steel Group Co., Ltd.;
Zhejiang Tenglong Stainless Steel Products Co., Ltd.; Jiangsu Fasten Hongsheng
Stainless Steel Products Co., Ltd.; Jiangsu Shenyuan Group Co., Ltd.; Jiangsu
Xinghuo Special Steel Co., Ltd.; Zhejiang Tsingshan Iron & Steel Co., Ltd.; Nantong
Songcheng Industrial Co., Ltd.; and China Metallurgical Information and
Standardization Institute.
Stainless Steel Wires
1 Scope
This Standard specifies the terms and definitions, ordering contents, classification and
designation, dimension, shape, technical requirements, test methods, inspection rules,
packaging, marking and quality certificate of stainless-steel wires.
This Standard is applicable to the stainless-steel wire (hereinafter referred to as steel
wire), but excluding the stainless-steel wire for cold top forging and welding; excluding
the austenitic and precipitation hardening spring stainless-steel wire.
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 Permissible Tolerances for Chemical Composition of Steel Products
GB/T 223.4 Iron, Steel and Alloy - Determination of Manganese Content -
Potentiometric or Visual Titration Method
GB/T 223.9 Iron, Steel and Alloy - Determination of Aluminum Content – Chrome
Azurol S Photometric Method
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 Cupper 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
GB/T 3207-2008 Bright Steel
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 (Routine Method)
GB/T 20878 Stainless and Heat-Resisting Steels - Designation and Chemical
Composition
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1 Delivery status
3.1.1 Soft
The steel wire is subjected to bright heat-treatment, or pickled or taken similar
treatment after heat treatment to remove the surface oxide scale.
3.1.2 Lightly drawn
After heat treatment, the steel wire is drawn to the finished product dimension with a
small area reduction ratio.
3.1.3 Cold drawn
After heat treatment, the steel wire is performed the conventional drawing; that is, the
forming process by pressure processing methods such as die drawing and roll drawing
at normal temperature.
3.2 Surface status
provisions of GB/T 2103-2008.
9.2 Batching rules
The steel wires shall be inspected and accepted in batches. Each batch consists of the
steel wires with the same designation, the same furnace number, the same size, and
the same delivery status.
9.3 Sampling quantity and sampling position
The sampling quantity and sampling position of the steel wires shall conform to the
provisions of Table 7.
9.4 Reinspection and judgment rules
The reinspection and judgement rules of the steel wires shall conform to the provisions
of GB/T 2103-2008. When the test results of the mechanical property are unqualified,
the two ends of the steel wire coil shall be removed for a certain length and then double
samples shall be taken for reinspection; the results shall conform to the provisions of
this Standard. Even if one of the specimens in the reinspection results is unqualified,
then such batch shall be judged to be unqualified. Inspection can also be taken on a
disc-by-disc basis; only those qualified can be delivered.
Table 7 – Inspection Items, Sampling Quantity, Sampling Position and Test
Methods of Steel Wire
S/N Inspection items
Sampling
quantity a
Sampling
position Test methods
1 Chemical composition
piece/furnace
As per provisions
of GB/T 20066
GB/T 223.4, GB/T 223.9, GB/T 223.11,
GB/T 223.17, GB/T 223.18, GB/T
223.23, GB/T 223.25, GB/T 223.26,
GB/T 223.28, GB/T 223.36, GB/T
223.37, GB/T 223.40, GB/T 223.59,
GB/T 223.60, GB/T 223.61, GB/T
223.64, GB/T 223.72, GB/T 223.86,
GB/T 11170, GB/T 20123, GB/T 20124
2 Tensile test 3 pieces
One end on
different disc
(piece)
GB/T 228.1
If nominal size of the steel wire is ≤
1.5mm, then gauge for elongation after
break is L=50mm. If nominal size of
steel wire is >1.5mm, the gauge for
elongation after break is L=100mm.
3 Intergranular corrosion 2 pieces
One end on
different disc
(piece)
As agreed b
......
GB/T 4240-2009
GB
NATIONAL STANDARD OF THE
PEOPLE’S 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 Specification
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...
......
GB/T 4240-1993 (GB/T 4240-93)
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
GB/T 4240-93
Replacing GB/T 4240-84
Stainless Steel Wires
ISSUED ON. JUNE 1, 1993
IMPLEMENTED ON. JANUARY 1, 1994
Issued by. China State Bureau of Technical Supervision
Table of Contents
1 Subject content and applicability ... 3
2 Normative references ... 3
3 Classification and designations ... 3
4 Dimension and shape ... 4
5 Technical requirements ... 5
6 Test methods ... 8
7 Inspection rules ... 8
8 Package, marks, and quality certificate ... 9
Additional explanation... 10
Stainless Steel Wires
1 Subject content and applicability
This Standard specifies classifications, designations, dimension, shape,
technical requirements, test methods, inspection rules, package, marks, and
quality certificate for stainless steel wires.
This Standard is applicable to stainless steel wires (hereinafter referred to as
“steel wire”); it is not applicable to the ones that are used for spring, cold
upsetting, and welding.
2 Normative references
GB 222 Method of Sampling Steel for Determination of Chemical
Composition and Permissible Variations for Product Analysis
GB 223 Methods for Chemical Analysis of Iron, steel, and Alloy
GB 228 Tensile Test Method for Metal
GB 342 Dimension, Shape, Mass, and Tolerance for Cold-drawn Round
Steel Wires
GB 1220 Stainless Steel Bars
GB 2103 General Provisions for Checking, Packing, Marking, and Quality
Certification of Steel Wire
GB 3207 Bright Steel
3 Classification and designations
The steel wire is divided into three types according to its texture; its type,
designations, condition, and code are listed in Table 1.
Table 1
Types Designations Delivery state Code
Austenitic type OCr17Ni12Mo2 1Cr18Ni9
Cold drawing
Light drawing
Table 2 in. mm
Steel wire diameter Inner-diameter of steel wire reel not less than
0.05 ~ 0.45
> 0.45 ~ 1.40
> 1.40 ~ 2.00
> 2.00 ~ 6.00
> 6.00 ~ 14.00
Reel or 100
4.6 It can provide straightening wire and bright steel wire according to the
requirement of purchasers. The dimension and shape of straightening wire
shall be in accordance with those specified in GB 342. And the dimension and
shape of bright steel wire shall be in accordance with those specified in GB
3207.
4.7 Marking example
The cold-drawing steel wire with diameter of 1.0 mm manufactured with
1Cr18Ni9 is marked as.
Stainless steel wire 4240/9181
3420.111
TGBLNiCr
GBh
5 Technical requirements
5.1 Chemical compositions
5.1.1 The chemical compositions (smelting analysis) of the steel used in steel
wires shall be in accordance with those specified in GB 1220.
5.1.2 The permissible variation of chemical compositions for steel wire shall be
in accordance with those specified in GB 222.
5.2 Delivery state
The steel wire shall be delivered according to the delivery state specified in
Table 1.
Soft (R). steel wire has acid pickling and the similar treatment after having
bright heat treatment or heat treatment.
Light drawing (Q). steel wire is drawn of small extent of deformation after
the heat treatment.
Cold drawing (L). steel wire has general drawing after the heat treatment.
those specified in Table 6.
7.4 Re-inspection and determining rules
Re-inspection and determining rules shall be in accordance with the provisions
specified in GB 2103.
8 Package, marks, and quality certificate
Package, marks, and quality certificate shall be in accordance with the
provisions specified in GB 2103. Steel wire of austenite and ferrite types shall
be packed according to type-Ⅱc; and that of martensite type shall be packed
according to type-Ⅲ.
Additional explanation.
This Standard was proposed by the Ministry of Metallurgical Industry of the
People's Republic of China.
This Standard shall be under jurisdiction of China Metallurgical Industry
Information and Standardization Research Institute.
This Standard was drafted by Dalian Steel Plant.
Main drafters of this Standard. Xu Xiaoqian and Wang Xinchong.
......
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