GB/T 4171-2008 English PDF (GBT4171-2008)

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GB/T 4171-2008: Atmospheric corrosion resisting structural steel
GB/T 4171-2008
GB
NATIONAL STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.50
H 46
Replacing GB/T 4171, GB/T 4172-2000, GB/T 18982-2003
Atmospheric corrosion resisting structural steel
ISSUED ON. OCTOBER 10, 2008
IMPLEMENTED ON. MAY 01, 2009
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the PRC.
Table of contents
Foreword ... 3 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms and definitions ... 8 
4 Classification and code ... 8 
5 Order content ... 9 
6 Dimension, shape, mass and allowable deviation ... 9 
7 Technical requirements ... 10 
8 Test methods ... 14 
9 Inspection rules ... 15 
10 Packaging, marking and quality certificates ... 15 
Appendix A (Informative) Comparison of new, old and similar designations .. 16 
Appendix B (Informative) Comparison of designations in this standard and
foreign similar designations ... 17 
Appendix C (Informative) Additional information to improve the atmospheric
corrosion resistance steel ... 18 
Appendix D (Informative) Guidelines for assessing atmospheric corrosion
resistance of low-alloy steels ... 19 
Foreword
This standard refers to EN 10025-5.2004 “Hot rolled products of structural
steels - Part 5. Technical delivery conditions for structural steels with improved
atmospheric corrosion resistance” ISO 4952.2006 “Structural steels with
improved atmospheric corrosion resistance”, ISO 5952.2005 “Continuously hot-
rolled steel sheet of structural quality with improved atmospheric corrosion
resistance”, ASTM A242/A242M-04 “Standard specification for high-strength
low-alloy steel”, ASTM A588/A588M-05 “Standard specification for high-
strength low-alloy structural steel, up to 50 ksi [345 MPa] minimum yield point,
with atmospheric corrosion resistance”, ASTM A606-04 “Standard specification
for steel, sheet and strip, high-strength low-alloy, hot-rolled and cold-rolled, with
improved atmospheric corrosion resistance”, ASTM A871/A871M-03 “Standard
specification for high-strength low-alloy structural steel plate with atmospheric
corrosion resistance”, JIS G 3114.2004 “Hot-rolled atmospheric corrosion
resisting steels for welded structure”, JIS G 3125.2004 “Superior atmospheric
corrosion resisting rolled steel”, combines the development and application
conditions of domestic atmospheric resistance steel, AND integrate and revise
GB/T 4171-2000 “Superior atmospheric corrosion resisting structural steel”,
GB/T 4172-2000 “Atmospheric corrosion resisting steel for welded structure”,
and GB/T 18982-2003 “Corrosion resistant steel plates and strips for container".
This standard replaces GB/T 4171-2000 “Superior atmospheric corrosion
resisting structural steel”, GB/T 4172-2000 “Atmospheric corrosion resisting
steel for welded structure”, and GB/T 18982-2003 “Corrosion resistant steel
plates and strips for container".
As compared with the above three standards, in this standard, the following
main technical contents are modified.
- RE-DEVELOP the standard name;
- RE-DEVELOP the steel designation;
- RE-ESTABLISH the chemical composition and mechanical properties of
each designation;
- ADD an appendix to assess the relative level of atmospheric corrosion
resistance.
Appendix A, B, C and D of this standard are informative appendixes.
This standard was proposed by the China Iron and Steel Association.
Atmospheric corrosion resisting structural steel
1 Scope
This standard specifies the dimension, shape, mass and allowable deviations,
technical requirements, test methods, inspection rules, packaging, marking and
quality certificates of atmospheric corrosion resisting structural steels.
This standard applies to hot-rolled and cold-rolled steel plates, strips and
sections with atmospheric corrosion properties for vehicles, bridges, containers,
buildings, towers and other structures. The atmospheric corrosion resisting
structural steels can also be used to produce the structural parts for bolted,
riveted and welded connection.
2 Normative references
The provisions in following documents become the provisions of this Standard
through reference in this Standard. For the dated references, the subsequent
amendments (excluding corrections) or revisions do not apply to this Standard;
however, parties who reach an agreement based on this Standard are
encouraged to study if the latest versions of these documents are applicable.
For undated references, the latest edition of the referenced document applies.
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 223.5 Steel and iron - Determination of acid-soluble silicon and total
silicon content - Reduced molybdosilicate spectrophotometric method
GB/T 223.9 Iron steel and alloy - Determination of aluminum content - Chrom
azurol S photometric method
GB/T 223.11 Iron steel and alloy - Determination of chromium content -
Visible titration or potentiometric titration method
GB/T 223.14 Methods for chemical analysis of iron, steel and alloy - The N-
Benzoy-N-phenylhydroxylamine extraction photometric method for the
determination of vanadium content
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 223.19 Methods for chemical analysis of iron, steel and alloy - The
copper (II)-tetrachloride-chloroform extraction photometric 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 223.26 Iron, steel and alloy - Determination of molybdenum content -
The thiocyanate spectrophotometric method
GB/T 223.30 Methods for chemical analysis of iron, steel and alloy - The
arsenazo III spectrophotometric method for the determination of zirconium
content after separation by p-bramomandelic acid
GB/T 223.40 Iron, steel and alloy - Determination of niobium content by the
Sulphochlorophenol S spectrophotometric method
GB/T 223.59 Iron and steel alloys - 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 223.61 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 periodate (potassium) photometric method for the determination of
manganese content
GB/T 223.64 Iron, steel and alloy - Determination of manganese content -
Flame atomic absorption spectrometric method
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 ...