GB/T 24595-2020 PDF English
US$145.00 · In stock · Download in 9 secondsGB/T 24595-2020: Hot-rolled steel bars for quenched and tempered automobile crankshafts Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 24595: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 24595-2020 | English | 145 |
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Hot-rolled steel bars for quenched and tempered automobile crankshafts
| Valid |
| GB/T 24595-2009 | English | 439 |
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3 days
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Steel bar for quenched and tempered automotive crankshaft
| Obsolete |
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GB/T 24595-2020: Hot-rolled steel bars for quenched and tempered automobile crankshafts---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT24595-2020
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.60
H 54
Replacing GB/T 24595-2009
Hot-rolled steel bars for quenched and tempered
automobile crankshafts
ISSUED ON: MARCH 06, 2020
IMPLEMENTED ON: OCTOBER 01, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Order content ... 7
4 Size, shape, weight ... 7
5 Technical requirements ... 8
6 Test method ... 11
7 Inspection rules ... 12
8 Packaging, marking and quality certificate ... 13
Hot-rolled steel bars for quenched and tempered
automobile crankshafts
1 Scope
This Standard specifies the order content, size, shape, weight, technical
requirements, test methods, inspection rules, packaging, marking and quality
certificates of hot-rolled steel bars for quenched and tempered automobile
crankshafts.
This Standard applies to hot-rolled steel bars whose nominal diameter is not
greater than 200 mm (hereinafter referred to as steel bars).
2 Normative references
The following documents are indispensable for the application of this document.
For dated references, only the dated version applies to this document. For
undated references, the latest edition (including all amendments) applies to this
document.
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 223.11, Iron, steel and alloy - Determination of chromium content -
Visual titration or potentiometric titration method
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 223.23, 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 223.60, Methods for chemical analysis of iron, steel and alloy - The
perchloric acid dehydration gravimetric method for the determination of
silicon content
GB/T 11261, Steel and iron - Determination of oxygen content - The pulse
heating inert gas fusion-infra-red absorption method
GB/T 17505, Steel and steel products - General technical delivery
requirements
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 34474.1-2017, Determination of banded structure of steel - Part 1:
Micrographic method using standards diagrams
3 Order content
Contracts or orders which are ordered under this Standard shall include the
following contents:
a) number of this Standard;
b) product name:
c) designation;
d) specifications;
e) weight (quantity);
f) delivery status;
g) other special requirements;
4 Size, shape, weight
4.1 Size and allowable deviation
4.1.1 The diameter of the steel bar and its allowable deviation shall meet the
requirements of Group 2 in Table 1 of GB/T 702-2017.
4.1.2 Steel bars are delivered at a fixed length; the fixed length or multiple
length is specified in the contract; the allowable deviation of the length is +50 0
mm. The existence of short length is allowed; the length of the short length shall
not be less than 2 000 mm; the delivery volume of the short length cannot
exceed 10% of the total weight of the batch.
6 End hardenability 1 pc/ batch Any steel bar GB/T 225
7 Macro-structure 2 pcs/ batch Different steel bars GB/T 226, GB/T 1979
8 Non-metallic inclusions 2 pcs/ batch Different steel bars
GB/T 10561-
2005
9 Grain size 1 pc/ batch Any steel bar GB/T 6394
10 Banded structure 1 pc/ batch Any steel bar GB/T 34474.1-2017
11 Ultrasonic testing Piece by piece - GB/T 4162-2008
12 Surface quality Piece by piece - Visual inspection
13 Size, shape Piece by piece - Caliper, micrometer
7 Inspection rules
7.1 Inspection and acceptance
7.1.1 The delivery inspection and acceptance of steel bars shall be carried out
by the supplier's quality and technical supervision department.
7.1.2 The supplier shall ensure that the delivered steel bars meet the
requirements of this Standard or the contract. If necessary, the buyer has the
right to inspect and accept according to any inspection item that is specified in
this Standard or the contract.
7.2 Batch rules
Steel bars shall be inspected and accepted in batches; each batch consists of
steel bars of the same designation, the same furnace number, the same size
and the same delivery status.
7.3 Sampling quantity and sampling position
The sampling quantity and sampling position of the steel bars shall comply with
the requirements of Table 7.
7.4 Re-inspection and determination rules
The re-inspection and determination rules of the steel bars are performed
according to the provisions of GB/T 17505.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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