GB/T 14408-2024 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 14408-2024 | English | 260 |
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Low alloy steel castings for general engineering and structural purposes
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| GB/T 14408-2014 | English | 85 |
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Low alloy steel castings for general engineering and structural purposes
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| GB/T 14408-1993 | English | 279 |
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Low alloy steel castings for general engineering and structural purposes
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GB/T 14408-2024: Low alloy steel castings for general engineering and structural purposes---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/GBT14408-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.80
CCS J 31
Replacing GB/T 14408-2014
Low Alloy Steel Castings for General Engineering and
Structural Purposes
(ISO 9477.2023, High strength cast steels for general engineering and
structural purposes, MOD)
Issued on. APRIL 25, 2024
Implemented on. APRIL 25, 2024
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 Terms and Definitions... 6
4 General Conditions of Delivery... 7
5 Manufacturing Process... 7
6 Technical Requirements... 7
7 Test Methods... 10
8 Inspection Rules... 12
9 Marking and Quality Certificate... 15
10 Casting Protection, Packaging, Transportation and Storage... 16
Appendix A (informative) Comparison of Structural No. between This Document and
ISO 9477.2023... 17
Appendix B (informative) Technical Differences between This Document and ISO
9477.2023 and the Causes... 18
Bibliography... 20
Foreword
This document was drafted in accordance with the rules provided in GB/T 1.1-2020 Directives
for Standardization - Part 1.Rules for the Structure and Drafting of Standardizing Documents.
This document serves as a replacement for GB/T 14408-2014 Low Alloy Steel Castings for
General Engineering and Structural Purposes. In comparison with GB/T 14408-2014, apart
from structural adjustments and editorial modifications, the main technical changes are as
follows.
a) The definitions of carbon equivalent and major defect are added (see 3.1 and 3.2);
b) The general conditions of delivery are added (see Chapter 4);
c) The manufacturing process is added (see Chapter 5);
d) The chemical composition of the material is modified (see Table 1; Table 1 of Version
2014);
e) The requirements for surface quality are modified (see 6.3; 4.8 of Version 2014);
f) The shapes, dimensions and specimen cutting positions of single cast test blocks are
modified (see 7.2.1.2; 5.2.1.2 of Version 2014);
g) The composition of the inspection batch is modified (see 8.1; 6.3 of Version 2014);
h) The content of the quality certificate is modified (see 9.2; 7.1.2 of Version 2014);
i) Additional requirements are deleted (see Chapter 8 of Version 2014).
This document modifies and adopts ISO 9477.2023 High Strength Cast Steels for General
Engineering and Structural Purposes.
In comparison with ISO 9477.2023, there are many structural adjustments. A table of the
comparison of structural No. changes between the two documents is shown in Appendix A.
In comparison with ISO 9477.2023, there are many technical differences. The terms involved
are marked with a vertical single line () in the outer margin of the page. A table of these
technical differences and their causes are provided in Appendix B.
This document makes the following editorial modifications.
---The title of the Standard is modified into Low Alloy Steel Castings for General
Engineering and Structural Purposes;
---The designations in Table 1 of ISO 9477.2023 are modified and added, and replaced by
the corresponding Chinese designations.
Please note that certain content of this document may involve patents. The institution issuing
this document does not undertake the responsibility of identifying these patents.
This document was proposed by and shall be under the jurisdiction of National Technical
Committee 54 on Foundry of Standardization Administration of China (SAC/TC 54).
The drafting organizations of this document. KOCEL Steel Foundary Co., Ltd.; Anhui Yingliu
Group Huoshan Casting Co., Ltd.; Harbin Jiuzhou Group Co., Ltd.; Zhejiang Tederic Heavy
Machinery Co., Ltd.; Hunan Zijing New Material Technology Co., Ltd.; Sanming Yijun
Machinery Casting Co., Ltd.; Sanming Special Steel Co., Ltd.; Shandong Tianli Machinery
Casting Co., Ltd.; Zhejiang Haoyue Automation Technology Co., Ltd.; Shandong Zhengyang
Machinery Co., Ltd.; Jiangxi Zhangshu Fuling Internal Combustion Engine Parts Co., Ltd.;
Xinxiang Great Wall Cast Steel Co., Ltd.; Taizhou FIRSTCNC Precision Machinery Co., Ltd.;
Anhui Kuayu Steel Structure Frame Engineering Co., Ltd.; Jiangsu Junchang Technology Co.,
Ltd.; Zhangshu Xinglong High Tech Materials Co., Ltd.; Akto County Yongxing Construction
Co., Ltd.; Guangdong Shao Casting Group Co., Ltd. (Shaoguan Casting and Forging Plant);
Erzhong (Deyang) Heavy Equipment Co., Ltd.; CITIC Heavy Industries Machinery Co., Ltd.;
Ludong University; Shenyang Foundry Research Institute Co., Ltd. of China Academy of
Machinery Science and Technology Group Co., Ltd.
The main drafters of this document. Li Yongxin, Hu Yue, Li Wending, Xue Ruili, Wang Xianrui,
Du Yingliu, Jiang Feng, Bao Jun, Yang Shangguang, Wang Engang, Wang Hai, Xu Erling,
Zhang Junbao, Jia Guanfei, Zhang Fengxian, Chen Tao, Liu Shaogang, Wang Zhongfu, Chen
Fan, Wei Jianhong, Shen Long, Peng Weiwei, Li Guangjian, Li Echeng, Li Canhui, Liu Yuanyi,
Lv Chenming, Fang Xingtao.
This document was first issued in 1993 and first revised in 2014.This is the second revision.
Low Alloy Steel Castings for General Engineering and
Structural Purposes
1 Scope
This document specifies the manufacturing, technical requirements, test methods, inspection
rules, marking and quality certificate of low alloy steel castings for general engineering and
structural purposes, as well as casting protection, packaging, transportation and storage, etc.
This document is applicable to the production, inspection and delivery acceptance of low alloy
steel castings for general engineering and structural purposes.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in the text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
GB/T 222 Permissible Tolerances for Chemical Composition of Steel Products
3 Terms and Definitions
The terms and definitions defined in GB/T 5611, and the following are applicable to this
document.
A defect with an excavation depth exceeding 25 mm or 40% of the wall thickness (whichever
is smaller) or an excavation repair area greater than 64 cm2.
4 General Conditions of Delivery
The supplementary requirements for delivered products shall be determined in the order
contract, and the specific requirements shall comply with the provisions of Appendix C in GB/T
40805-2021.
5 Manufacturing Process
Unless the demand-side has special requirements, the heat treatment process shall be
determined by the supply-side.
6 Technical Requirements
The deformation caused by the castings can be eliminated through the method of correction.
After correction, stress relief treatment shall be performed.
7 Test Methods
When there are insufficient spare test blocks, sampling from the casting body is allowed.
The sampling position and property indicators shall be agreed upon by the demand-side and the
supply-side.
The impact test shall be carried out in accordance with the provisions of GB/T 229.
Casting correction shall adopt a pressure forming method.
8 Inspection Rules
When the initial test result is disqualified, unless otherwise specified, the supply-side shall
comply with the following provisions.
When the properties in the initial inspection are disqualified, the castings and test blocks may
be re-subjected to the heat treatment, then, the mechanical test can be performed. Without the
consent of the demand-side, the castings and test blocks shall not be re-heated more than twice
(except tempering).
9 Marking and Quality Certificate
The supply-side shall provide the demand-side with a quality certificate signed by the person
in charge of the supply-side’s inspection department. The quality certificate shall at least include
but not be limited to the following content.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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