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GB/T 4357-2009 PDF in English


GB/T 4357-2009 (GB/T4357-2009, GBT 4357-2009, GBT4357-2009)
Standard IDContents [version]USDSTEP2[PDF] delivered inName of Chinese StandardStatus
GB/T 4357-2009English85 Add to Cart 0-9 seconds. Auto-delivery. Cold-drawn non-alloy steel wire for springs Obsolete
GB/T 4357-2022English410 Add to Cart 0-9 seconds. Auto-delivery. Cold-drawn unalloyed steel wire for springs Valid
Newer version: GB/T 4357-2022
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Standards related to: GB/T 4357-2009

GB/T 4357-2009: PDF in English (GBT 4357-2009)

GB/T 4357-2009
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.65
H 49
Replacing GB/T 4357-1989
Cold-drawn non-alloy wire for springs
(ISO 8458-2.2002, Steel wire for mechanical springs - Part 2. Patented cold-
drawn non-alloy steel wire, MOD)
ISSUED ON. AUGUST 30, 2009
IMPLEMENTED ON. MAY 1, 2010
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 ... 6
4 Gradation and marking ... 7
5 Order contents ... 8
6 Size, appearance and permissible deviation ... 9
7 Technical requirements ... 11
8 Testing items, requirements and methods... 17
9 Testing rules of wire ... 17
10 Packaging, storage and delivery, marking and quality certificates ... 18
Annex A (informative) Comparison between clause number of this Standard
and clause number of ISO 8458-2.2002 ... 20
Annex B (informative) The technical differences and their reasons between this
Standard and ISO 8458-2. 2002 ... 21
Foreword
This Standard is revised by adopting ISO 8458-2.2002 “Steel wire for mechanical
springs - part 2. patented cold-drawn non-alloy wire” (English version).
This Standard is redrafted in accordance with ISO 8458-2. 2002. For easy comparison,
the summary list of national and international Standard clauses has been listed in
informative Annex A. In Annex B, the summary list of technical differences and their
reasons is provided for reference.
This Standard replaces GB/T 4357-1989 “Non-alloy wire for springs”, and compared
with GB/T 4357-1989 the main differences are as follows.
- Terms and definitions are added.
- The gradation of spring load against wire is added; variety of coating wire and
straight wire are added.
- Order contents are added.
- Provisions of diameter tolerance are modified from quoting other Standards to
direct provisions (Table 2 and Table 3).
- Pitch index is added.
- Chemical composition scope is enlarged and suitable composition requirements
for static load and dynamic load springs are provided.
- Tensile strength fluctuation scope of the same one wire is provided.
- The limitation of surface defects’ depth on dynamic load spring application is
added.
- Bending test and coil spring test are added.
- Provisions of sampling location and amount are changed.
- Requirements of inspecting document provision and chemical composition
providing are added.
Annex A and Annex B in this Standard are informative.
This Standard was proposed by China Iron and Steel Association.
This Standard is under the jurisdiction of the National Technical Committee on Iron and
Steel of Standardization Administration of China.
Cold-drawn non-alloy wire for springs
1 Scope
This Standard stipulates terms and definitions, gradation and marking, order contents,
dimension, profile and allowable deviation, technical requirements, testing items,
requirements and methods, testing rules, packaging, mark and quality certification of
cold-drawn non-alloy wire for springs production.
This Standard is applicable to the cast cold-drawn non-alloy wire for springs
(hereinafter referred to as wire) used to produce static load and dynamic load springs.
It is not applicable to produce wire used in high fatigue strength springs (e.g. valve
springs).
2 Normative references
The following standards contain provisions which, through reference in this Standard,
constitute provisions of this Standard. For dated reference, subsequent amendments
to (excluding corrections to), or revisions of, any of these publications do not apply.
However, the parties to agreements based on this Standard are encouraged to
investigate the possibility of applying the most recent editions of the standards. For
undated references, the latest edition of the normative document referred to 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 223.19 Methods for chemical analysis of iron steel and alloy - The
neocuproine-chloroform extraction photometric method for the determination of
copper content
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 223.60 Methods for chemical analysis of iron, steel and alloy - The perchloric
acid dehydration gravimetric method for the determination of silicon content (GB/T
223.60-1997, eqv ISO 439.1994)
GB/T 223.67 Steel and alloys - Sulfur content method for determination of
methylene blue
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 223.71-1997, eqv ISO 437.1982)
GB/T 224 Determination of depth of decarburization of steel (GB/T 224-2008, ISO
3887.2003, MOD)
GB/T 228 Metallic materials - Tensile testing at ambient temperature
GB/T 1839 Galvanizing coat quality test of steel products (GB/T 1839-2008, ISO
1460.1992, MOD)
GB/T 239 Metallic Materials Wire Torsion Test (GB/T 239-1999, eqv ISO 7800.1984)
GB/T 1839 Determination of weight of zinc coating of steel products (GB/T 1839-
2008, ISO 1460.1992, MOD)
GB 2103 General provisions for checking, packing, marking and quality certification
of steel wire
GB/T 2976 Metallic Materials - Wire - Wrapping Test (GB/T 2976-2004, ISO 7802.
1983, IDT)
YB/T 170.2 Non-ally wire rod for conversion to wire - Part 2. General purpose wire
rod (YB/T 170.2-2000, eqv ISO/FDIS 16120-2.2000)
YB/T 170.4 Non-alloy wire rod for conversion to wire - Part 4. Special purpose wire
rod (YB/T 170.4-2002, ISO 16120-4.2001, MOD)
3 Terms and definitions
The following terms and definitions are applicable to this Standard.
3.1
cold-drawn non-alloy wire for springs
Blank carbon steel, firstly through austenization heating and then cooling in certain
condition, and make it generate sorbite (nodular troostite) tissue, hereafter cold drawn
to the wanted dimensional steel spring wire.
3.2
static load
0.50 ≤ d < 0.65 -0.012 +0.020
0.65 ≤ d < 0.70 -0.015 +0.025
0.70 ≤ d < 0.80 -0.015 +0.030
0.80 ≤ d < 1.01 -0.020 +0.035
1.01 ≤ d < 1.35 -0.025 +0.045
1.35 ≤ d < 1.78 -0.025 +0.050
1.78 ≤ d < 2.60 -0.030 +0.060
2.60 ≤ d < 2.78 -0.030 +0.070
2.78 ≤ d < 3.01 -0.030 +0.075
3.01 ≤ d < 3.35 -0.030 +0.080
3.35 ≤ d < 4.01 -0.030 +0.090
4.01 ≤ d < 4.35 -0.035 +0.100
4.35 ≤ d < 5.00 -0.035 +0.110
5.00 ≤ d < 5.45 -0.035 +0.120
5.45 ≤ d < 6.01 -0.040 +0.130
6.01 ≤ d < 7.10 -0.040 +0.150
7.10 ≤ d < 7.65 -0.045 +0.160
7.65 ≤ d < 9.00 -0.045 +0.180
9.00 ≤ d < 10.00 -0.050 +0.200
10.00 ≤ d < 11.10 -0.070 +0.240
11.10 ≤ d < 12.00 -0.080 +0.250
12.00 ≤ d ≤ 13.00 -0.080 +0.300
Table 4 -- Permissible deviation of cut-length In millimeter
Nominal length, L Permissible deviation of length
0 < L ≤ 300 ൅1.00
൅0.01ܮ
െ0 300 < L ≤ 1 000
൅2.0
L > 1 000 ൅0.002ܮ0
6.3 Cast of wire
6.3.1 Wire shall have a uniform ordered cast. After clipping binding thread, the
diameter of free ring should not be smaller than the diameter of wire coil ring. The
phenomenon of cast amplifying is allowed, but the amplifying degree in the same cast
and the same group should be approximately uniform.
6.3.2 For the wire, nominal diameter is not larger than 5.00 mm, and the pitch “f” shall
meet the requirements of equation (1).
tightened around at least 4 circuits on the mandrel whose diameter is equal to its own
diameter, shall not show any sign of fractures on the coating, and the zinc coating won't
shed with wiping.
7.2.4 The purchaser and the manufacturer can negotiate salt spray test of coating and
its requirements.
NOTE. General coating processes may alter the properties of the steel wire. The ductility and
endurance of the wire may be reduced.
7.3 Surface quality
7.3.1 The surface of wire shall be smooth, and there shall be no pulling trace, fractures,
rusts and so on surface defects that have obvious adverse impact on wire use.
7.3.2 Surface quality tests shall be applied to wires intended for use in dynamic load
spring (DM and DH). The radial depth of crack or other surface defects shall be not
larger than 1 % of nominal diameter of the wire. For the wire whose nominal diameter
is not be smaller than 2 mm, shall be adopted pickle test, and after pickle test there
should be no surface detects. When controversy occurs, metallurgical phase testing
method shall be adopted. Stress relieving treatment should be done before pickle test,
and then immerge the cold sa...
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Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.