GB/T 15712-2016_English: PDF (GB/T15712-2016)
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 15712-2016 | English | 145 |
Add to Cart
|
0--9 seconds. Auto-delivery
|
Micro-alloyed medium carbon steels
| Valid |
GB/T 15712-2016
|
| GB/T 15712-2008 | English | 479 |
Add to Cart
|
3 days [Need to translate]
|
Micro-alloyed medium carbon steels
| Obsolete |
GB/T 15712-2008
|
| GB/T 15712-1995 | English | 359 |
Add to Cart
|
3 days [Need to translate]
|
Ferritic--Pearlitic engineering steels for precipitation hardening from hot-working temperature
| Obsolete |
GB/T 15712-1995
|
| Standard ID | GB/T 15712-2016 (GB/T15712-2016) | | Description (Translated English) | Micro-alloyed medium carbon steels | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H40 | | Classification of International Standard | 77.140.60 | | Word Count Estimation | 18,194 | | Date of Issue | 1995-10-10 | | Date of Implementation | 2017-07-01 | | Drafting Organization | Northeast Special Steel Group Co., Ltd., Steel Research Institute, Suzhou Suxin Special Steel Co., Ltd., Hangzhou Iron and Steel Group, Metallurgical Industry Information Standards Research Institute, Beijing Jiaotong University | | Administrative Organization | National Steel Standardization Technical Committee (SAC/TC 183) | | Regulation (derived from) | National Standard Notice No. 14 of 2016 | | Proposing organization | China Iron and Steel Association | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China, Standardization Administration of the People Republic of China | | Standard ID | GB/T 15712-2008 (GB/T15712-2008) | | Description (Translated English) | Microalloyed medium crabon steels | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H40 | | Classification of International Standard | 77.080.20 | | Word Count Estimation | 12,189 | | Date of Issue | 2008-05-13 | | Date of Implementation | 2008-11-01 | | Older Standard (superseded by this standard) | GB/T 15712-1995 | | Adopted Standard | ISO 11692-1994, MOD | | Drafting Organization | Dongbei Special Steel Group Co., Ltd. | | Administrative Organization | National Steel Standardization Technical Committee | | Regulation (derived from) | National Standard Approval Announcement 2008 No.8 (Total No.121) | | 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 non-quenched and tempered steel mechanical structure definitions, classification, ordering content, dimensions, test methods, , shape and tolerances, technical requirements for inspection rules, packaging, marking and quality certificate. This standard applies to non-quenched and tempered steel and hot-rolled structural steel machinery bright silver steel. | | Standard ID | GB/T 15712-1995 (GB/T15712-1995) | | Description (Translated English) | Ferritic--Pearlitic engineering steels for precipitation hardening from hot-working temperature | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H40 | | Classification of International Standard | 77.080.20 | | Word Count Estimation | 9,947 | | Date of Issue | 1995/10/10 | | Date of Implementation | 1996/3/1 | | Adopted Standard | ISO 11692-1994, NEQ | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 8, 2008 (No. 121 overall) | | Proposing organization | National Steel Standardization Technical Committee | | Issuing agency(ies) | State Bureau of Technical Supervision |
GB/T 15712-2016
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.60
H 40
Replacing GB/T 15712-2008
Microalloyed medium carbon steel
(ISO 11692.1994, Ferritic-pearlitic engineering steel for precipitation
hardening from hot-working temperatures, MOD)
ISSUED ON. AUGUST 29, 2016
IMPLEMENTED ON. MARCH 1, 2017
Issued by. General Administration of Quality Supervision, Inspection
and Quarantine of the People's Republic of China;
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 ... 8
4 classification ... 8
5 Order content ... 8
6 Dimension, shape and allowable deviation ... 9
7 Technical requirements ... 9
8 Test methods ... 15
9 Inspection rules ... 16
10 Packaging, marking and quality certificate ... 17
Annex A (Informative) Comparison of clause and article number in this Standard and
those in ISO 11692.1994 ... 18
Annex B (Informative) Technical differences between this standard and ISO
11692.1994 and their causes ... 19
Annex C (informative) Comparing of steel grade in this Standard and steel grade in ISO
11692.1994 ... 21
Foreword
This Standard is drafted according to the rules given in GB/T 1.1-2009.
This Standard replaces GB/T 15712-2008 “Microalloyed medium carbon steel”.
Compared with GB/T 15712-2008, the main changes are as follows.
- ADD the classification of steel according to microstructure;
- ADD six steel grades. F70VS, F38MnSiNS, F48MnV, F37MnSiVS, F41MnSiV,
F25Mn2CrVS and relevant requirements;
- ADJUST the silicon content of parts of steel grades. the silicon content of F35VS,
F40VS and F45VS is adjusted from 0.20% ~ 0.40% to 0.15% ~ 0.35%; the silicon
content of F30MnVS and F38MnVS is adjusted from ≤ 0.80% to 0.30% ~ 0.80%.
- ADJUST the carbon content range of F38MnVS, from 0.34% ~ 0.41% to 0.35% ~
0.42%;
- ADD the requirement of Mo ≤ 0.05%;
- CANCEL the residual elements Ni, Cu, Mo, Nb, Ti finished products’ chemical
composition allowable deviation;
- ADD recommended calculation formula for carbon equivalent;
- TIGHTEN the requirements for low magnification;
- TIGHTEN the requirements for decarburization layer;
- ADD the grain size as a protocol requirement;
- ADD the requirement that the surface quality may be in accordance with the
requirements of GB/T 28300;
- ADD the requirement that it may provide inspection documents according to GB/T
18253.
This Standard uses the redrafting method to amend and adopt ISO 11692.1994
“Ferritic-pearlitic engineering steel for precipitation hardening from hot-working
temperatures”.
In order to facilitate comparison, the comparision table of the clause and article number
in this Standard and the clause and article number in ISO 11692.1994 is listed in Annex
A of this Standard.
Microalloyed medium carbon steel
1 Scope
This Standard specifies the terms and definitions, classification, order content,
dimension, shape and allowable deviation, technical requirements, test methods,
inspection rules, packaging, marking and quality certificate of microalloyed medium
carbon steel.
This Standard applies to hot-rolled steel and bright steel (hereinafter referred to as
steel) of microalloyed medium carbon steel.
2 Normative references
The following documents are indispensable for the application of this document. For
dated references, only the dated edition applies to this document. For undated
references, the latest edition (including all amendments) applies to this document.
GB/T 223.5 Steel and iron - Determination of acid-soluble silicon and total silicon
content - Reduced molybdosilicate spectrophotometric method (GB/T 223.5-2008,
ISO 4829-1.1986, ISO 4829-2.1988, MOD)
GB/T 223.11 Iron steel and alloy - Determination of chromium content - Visual
titration or potentiometric titration method (GB/T 223.11-2008, ISO 4937.1986,
MOD)
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 223.18 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 223.23-2008, ISO 4939.1984,
MOD)
GB/T 223.26 Iron steel and alloy - Determination of molybdenum content - The
thiocyanate spectrophotometric method
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 Iron steel and alloy - Determination of phosphorus content - Bismuth
phosphomolybdate blue spectrophotometric method and antimony
phosphomolybdate 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 223.68-1997, ISO 671.1982, MOD)
GB/T 223.69 Iron steel and alloy - Determination of carbon contents - Gas-
volumetric method after combustion in the pipe furnace
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 223.76-1994, ISO 9647.1989, MOD)
GB/T 223.78 Methods for chemical analysis of iron, steel and alloy - Curcumin
spectrophotometric method for the determination of boron content (GB/T 223.78-
2000, ISO 10153.1997, IDT)
GB/T 224-2008 Determination of depth of decarburization of steel (ISO 3887.2003,
MOD)
GB/T 226 Test method for macrostructure and defect of steel by etching
GB/T 228.1 Metallic materials - Tensile testing - Part 1. Method of test at room
temperature (GB/T 228.1-2010, ISO 6892-1.2009, MOD)
GB/T 229 Metallic materials - Charpy pendulum impact test method (GB/T 229-
2007, ISO 148-1.2006, MOD)
GB/T 231.1 Metallic materials - Brinell hardness test - Part 1. Test method (GB/T
231.1-2009, ISO 6506-1.2005, MOD)
GB/T 702-2008 Hot-rolled steel bars - Dimensions, shape, weight and tolerances
(ISO 1035-1.1980, ISO 1035-2.1980, ISO 1035-4.1982, MOD)
GB/T 1979 Standard diagrams for macrostructure and defect of structural steel
GB/T 2101 General requirement of acceptance packaging marking and certification
for section steel
GB/T 2975 Steel and steel - Location and preparation of test pieces for mechanical
testing (GB/T 2975-1998, eqv ISO 377.1997)
GB/T 3207-2008 Bright steel
GB/T 4162 Forged and rolled steel bars - Method for ultrasonic testing
GB/T 4336 Standard test method for spark discharge atomic emission
spectrometric analysis of carbon and low - Alloy steel (routine method)
GB/T 6394 Metal - Methods for estimating the average grain size
GB/T 7736 Ultrasonic inspecting method for macro-structure and imperfection of
steel
GB/T 10561-2005 Steel - Determination of content of nonmetallic inclusions -
Micrographic method using standards diagrams (ISO 4967.1998, IDT)
GB/T 13298 Inspection methods of microstructure for metals
GB/T 13299 Steel - Determination of microstructure
GB/T 13304.1 Steel classification - Part 1. Classification according to chemical
composition (GB/T 13304.1-2008, ISO 4948-1.1982)
GB/T 15574 Steel classification and definitions (GB/T 15574-2016, ISO 6929.2013,
MOD)
GB/T 17505 Steel and steel - General technical delivery requirements (GB/T 17505-
2016, ISO 404.2013, MOD)
GB/T 18253 Steel and steel - Types of inspection documents (GB/T 18253-2002,
ISO 10474.1991, MOD)
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 iner...
......
GB/T 15712-2008
Microalloyed medium crabon steels
ICS 77.080.20
H40
National Standards of People's Republic of China
Replacing GB/T 15712-1995
Non-mechanical structure of quenched steel
(ISO 11692.1994, MOD)
Posted 2008-05-13
2008-11-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This revised standard adopts ISO 11692.1994 "Thermal processing precipitation strengthened ferritic - pearlitic engineering steels."
This standard is based on ISO 11692.1994 redrafted. For ease of comparison, the data are listed in Appendix B of the standard terms and
ISO 11692.1994 standard terms of the control list.
This standard adopts ISO 11692.1994 standard has been modified. These technical differences involved in a single vertical line identifies them
And the terms of the margin of the page. In Appendix B gives a list of technical differences and the reasons for the reference.
This standard replaces GB/T 15712-1995 "non-mechanical structure of quenched steel." This standard and GB/T 15712-1995 major change compared to
Of the following.
--- English name changed to. Microaloyedmediumcarbonsteels (see cover and 3.1);
--- Modify the "non-mechanical structure of quenched steel" is defined (see Chapter 3);
--- The "cutting of steel" was changed to "direct machining of steel" (see Chapter 4);
--- Cancel cutting steel grades that way in the "Y", with the tail adding "S" represents a sulfur-containing steel, which grades representation
"YF ..." changed to "F ... S" (see Table 1);
--- Increasing the "order content" (see Chapter 5);
--- Increased steel bright silver and requirements (see Chapter 1, 6.2,7.8.3, etc.);
--- Increased F30MnVS, F38MnVS, F49MnVS F12Mn2VBS and other brands and requirements, and will YF45V
F45V, YF35MnV and F35MnVN, YF40MnV and F40MnV were merged into F45VS, F35MnVS and
F40MnVS (see Table 1);
--- Increasing the direct machining of steel components can be negotiated content (see 7.1.1);
--- Chemical composition to increase the "negotiated by both sides, niobium or titanium can be used to replace part or all of the vanadium content in some cases replaced
, The lower limit of the vanadium content by joint agreement "(see 7.1.2);
--- Chemical composition and permissible variations according to GB/T 222-1984 Table 2, and added sulfur and nitrogen content allowable deviation (1995
In version 6.1.2; this edition of Table 2);
--- Smelting method by modifying source selection (1995 Version 6.2; 7.2 edition);
--- Steel delivery status canceled the forged state, increasing the state of delivery bright silver (1995 Version 6.3; 7.3 edition);
Mechanical properties --- hot pressure processing of steel by the basic guarantee for the project to ensure that the project agreement;
--- Abolition of the "hardening fracture" test low magnification (1995 Version 6.5.1; 7.5.1 edition);
--- Decarburization test hot pressure processing steel modified by the agreement to ensure that the project is essential to ensure the project (1995 version 6.7; Excerpts
7.6.1);
--- Nonmetallic inclusions modified by the agreement to ensure that the project is the basic guarantee for the project, and the Class A Thin relaxing Class I, Division B tightened
0.5, DS class provides measured data (1995 Version 6.6; 7.7 edition);
--- To increase the control of the Standard Grade and Standard Grade Edition 1995 and ISO 11692 standard grades (see Appendix A).
The Standard Appendix A and Appendix B are informative appendices.
The standard proposed by China Iron and Steel Association.
This standard is under the jurisdiction of the National Steel Standardization Technical Committee.
This standard is mainly drafted by. Dongbei Special Steel Group Co., Ltd., Steel Research Institute, CITIC Metal Company, Metallurgical Industry Information
Standards Institute.
The main drafters of this standard. Juan true, Dong Han, Joe soldiers, HUI Wei Luan Yan, Wang Weizhe.
This standard was first released in October 1995.
Non-mechanical structure of quenched steel
1 Scope
This standard specifies the non-mechanical structure of quenched steel definition, classification, ordering the content, size, shape and tolerances, technical requirements, test side
Method, inspection rules, packaging, marking and quality certificate.
This standard applies to non-mechanical structure of quenched steel hot-rolled steel and steel bright silver.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Determination of sulfur content of barium sulfate gravimetric method - GB/T 223.72 Methods for chemical analysis of iron, steel and alloy alumina chromatographic separation
......
|