GB/T 34564.1-2017 PDF in English
GB/T 34564.1-2017 (GB/T34564.1-2017, GBT 34564.1-2017, GBT34564.1-2017)
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Cold-word mould steel -- Part 1: High toughness and wear-resistance steels
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Standards related to (historical): GB/T 34564.1-2017
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GB/T 34564.1-2017: PDF in English (GBT 34564.1-2017) GB/T 34564.1-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.35
H 40
Cold-work mould steel –
Part 1. High toughness and wear-resistance steels
ISSUED ON. OCTOBER 14, 2017
IMPLEMENTED ON. JULY 01, 2018
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Order contents ... 6
4 Size, shape, weight ... 7
5 Technical requirements ... 7
6 Test methods ... 13
7 Inspection rules ... 14
8 Packaging, marking and quality certificates ... 15
Appendix A (Normative) Lateral impact specimen requirements ... 16
Appendix B (Informative) Main features and applications of each grade ... 18
Foreword
Foreword
GB/T 34564 “Cold-work mould steel” is divided into two parts.
- Part 1. High toughness and wear-resistance steels;
- Part 2. Flame quenchable steels.
This part is Part 1 of GB/T 34564.
This part was drafted in accordance with the rules given in GB/T 1.1-2009.
This part was proposed by the China Iron and Steel Association.
This part shall be under the jurisdiction of the National Steel Standardization
Technical Committee (SAC/TC 183).
Drafting organizations of this part. Heye Metallurgical Science and Technology
Co., Ltd., Shanghai Materials Research Institute, Iron and Steel Research
Institute, Fushun Special Steel Co., Ltd., Metallurgical Industry Standard
Information Institute, Sichuan Liuhe Forging Co., Ltd., Daye Special Steel Co.,
Ltd., Ningbo Jiasheng Mould Material Co., Ltd., Hubei Chuanye Technology Co.,
Ltd., Jiangsu Tiangong Tools Co., Ltd.
The main drafters of this part. Zhang Beibei, Zhang Zhanpu, Wu Lizhi, Ma
Dangshen, Kang Aijun, Xue Chun, Dai Qiang, Zhang Huaguo, Qiu Jianguo,
Wan Chunyan, Xu Huixia, Chi Hongxiao, Gu Qiang, Wang Wenzheng, Wang
Jiayou, Qiu Lipeng, Sun Xiuhua, Yang Tianliang, Wang Yang, Yan Chengming.
Cold-word mould steel -
Part 1. High toughness and wear-resistance steels
1 Scope
This part of GB/T 34564 specifies the ordering content, dimensions, shape,
weight, technical requirements, test methods, inspection rules, packaging,
marking, and quality certificates for high toughness and wear-resistance cold
work mould steels.
This part applies to hot-rolled, forged, cold-drawn, silver-bright steel and
machine processing delivery of high toughness and wear-resistance cold work
mould steel (hereinafter referred to as “steel”).
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB/T 223.11 Iron, steel and alloy - Determination of chromium content -
Visual titration or potentiometric titration method
GB/T 223.13 Methods for chemical analysis of iron, steel and alloy - The
ammonium ferrous sulfate titration method for the determination of vanadium
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 223.28 Methods for chemical analysis of iron, steel and alloy - The α-
benzoin oxime gravimetric method for the determination of molybdenum
content
GB/T 223.29 Iron steel and alloy - Determination of lead content - Carrier
precipitation-xylenol orange spectrophotometric method
GB/T 223.31 Iron steel and alloy - Determination of arsenic content -
GB/T 1299-2014 Tool and mould steels
GB/T 2101 General requirement of acceptance packaging marking and
certification for section steel
GB/T 3207-2008 Bright steel
GB/T 4336 Carbon and low-alloy steel - Determination of multi-element
contents - Spark discharge atomic emission spectrometric method (routine
method)
GB/T 6394 Metal - Methods for estimating the average grain size
GB/T 6402 Steel forgings - Method for ultrasonic testing
GB/T 8170 Rules of rounding off for numerical values & expression and
judgement of limiting values
GB/T 10561-2005 Steel - Determination of content of nonmetallic inclusions
- Micrographic method using standards diagrams
GB/T 11261 Steel and iron - Determination of oxygen content - The pulse
heating inert gas fusion-infra-red absorption method
GB/T 13298 Inspection methods of microstructure for metals
GB/T 14979-1994 Eutectic carbide of steel - Micrographic method using
standard diagrams
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 20124 Steel and iron - Determination of nitrogen content - Thermal
conductimetric method after fusion in a current of inert gas
3 Order contents
Contracts or orders for steel products ordered in this part shall include the
following.
a) Standard number;
b) Product name;
c) Grade;
a) Cold-drawn steels with dimensional accuracy grades h9 and h10 shall not
have surface defects;
b) Cold-drawn steels with dimensional accuracy grades h11 and h12 are
allowed to have minor surface defects such as pits, individual scratches,
hairline, concave, dark spots, cracks, and lubricant mark whose depth,
calculated from actual size, is not greater than the nominal dimensional
tolerance; as required by the purchaser and specified in the contract, the
allowable defect depth may not be greater than half of the nominal
dimensional tolerance.
5.10.4 There shall be no defects on the surface of the steel delivered after
machining.
5.10.5 The surface of bright material shall meet the requirements of GB/T 3207.
5.10.6 In accordance with the requirements of the purchaser and as negotiated
between the supplier and the purchaser, the surface quality can be specified
otherwise, but it shall be indicated in the contract.
5.11 Special requirements
In accordance with the requirements of the purchaser, as negotiated between
the supplier and the purchaser, and noted in the contract, it can supply the steel
with the following special requirements.
a) Special chemical composition;
b) Grain size;
c) Lateral impact;
d) Other requirements.
6 Test methods
6.1 The inspection items, sampling quantities, sampling locations and test
methods for each batch of steel shall comply with Table 11.
6.2 The chemical composition test method of the steel shall be in accordance
with GB/T 4336, GB/T 11261, GB/T 20124 or common methods; in case of
arbitration, it shall be in accordance with the provisions of GB/T 223.11, GB/T
223.13, GB/T 223.23, GB/T 223.26, GB/T 223.28, GB/T 223.29, GB/T 223.31,
GB/T 223.47, GB/T 223.48, GB/T 223.53, GB/T 223.58, GB/T 223.59 , GB/T
223.60, GB/T 223.67, GB/T 223.69 and GB/T 223.82.
Table 11 -- Inspection items, sampling quantities, sampling locations and
method, the same delivery status, the same specification, and the same heat
treatment furnace.
7.2.2 Each batch of electro-slag re-melted steel shall consist of the steels of the
same grade, the same sub-furnace number, the same processing method, the
same delivery status, the same specification and the same heat treatment
furnace. Under the conditions of stable process and guaranteeing the
requirements of this part, it is allowed to batch the electro-slag re-melting
mother furnace number, but for chemical composition, it shall take one from
each sub-furnace number, the other items follow the sampling requirements for
mother furnace number.
7.3 Sampling quantity
The sampling quantity and sampling location for the steel inspection shall
comply with the requirements of Table 11. If the number of samples specified in
Table 11 cannot be obtained, sampling inspection may be carried out on a one-
by-one basis.
7.4 Re-inspection and judgment rules
7.4.1 Rules for re-inspection and determination of steel materials shall be in
accordance with the provisions of GB/T 17505.
7.4.2 If the supplier can ensure that the steel is qualified, it is allowed to use
large material to substitute small material or use blank to substitute material to
test the macrostructure, non-metallic inclusion, tensile property, impact test and
end hardenability of the steels of the same furnace number.
7.5 Numerical round-off
The inspections and inspection measurement values of steel products are
subject to rounding off by the round-off value comparison method, in
accordance with the provisions of GB/T 8170.
8 Packaging, marking and quality certificates
Steel packaging, marking and quality certificates shall comply with the
provisions of GB/T 2101.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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