GB/T 37570-2019 PDF in English
GB/T 37570-2019 (GB/T37570-2019, GBT 37570-2019, GBT37570-2019)
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Name of Chinese Standard | Status |
| GB/T 37570-2019 | English | 150 |
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Copper alloy sheet for oilless bearing
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Standards related to (historical): GB/T 37570-2019
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GB/T 37570-2019: PDF in English (GBT 37570-2019) GB/T 37570-2019
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.150.30
H 62
Copper Alloy Sheet for Oilless Bearing
ISSUED ON: JUNE 4, 2019
IMPLEMENTED ON: MAY 1, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Technical Requirements ... 5
4 Test Methods ... 9
5 Inspection Rules ... 10
6 Marking, Packaging, Transportation, Storage and Quality Certificate ... 12
7 Order Form (or contract) Content ... 12
Foreword
This Standard was drafted in accordance with the rules in GB/T 1.1-2009.
This Standard was proposed by China Nonferrous Metals Industry Association.
This Standard shall be under the jurisdiction of National Technical Committee 243 on
Nonferrous Metals of Standardization Administration of China (SAC/TC 243).
The drafting organizations of this Standard: Ningbo XINGYE SHENGTAI Group Co.
Ltd.; Ningbo XINGYE XINTAI New Electronic Materials Co., Ltd.; Shaoxing Quality and
Technology Supervision and Inspection Institute; China Nonferrous Metals Techno-
Economic Research Institute.
The main drafters of this Standard: Ma Jimiao, Liufeng, Du Xiyong, Shaoye, Yu Ximeng,
Wu Xiaolong, Liao Junjun, Lin Zhihao, Cheng Liexin, Zhang Mengjun, Lei Fuqing, Zhu
Taiheng, Xujun, Jiang Zhijing, Xiabin, Qiu Shaojun, Chang Lvhui, Li Lingxia.
Copper Alloy Sheet for Oilless Bearing
1 Scope
This Standard stipulates the technical requirements, test methods, inspection rules,
marking, packaging, transportation, storage, quality certificate and order form (or
contract) content of copper alloy sheet for oilless bearing.
This Standard is applicable to copper alloy sheet for Oilless bearing (hereinafter
referred to as sheet).
2 Normative References
The following documents are indispensable to the application of this document. 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 4340.1 Metallic Materials - Vickers Hardness Test - Part 1: Test Method;
GB/T 5121 (all parts) Methods for Chemical Analysis of Copper and Copper Alloys;
GB/T 5231 Designation and Chemical Composition of Wrought Copper and Copper
Alloys;
GB/T 8170 Rules of Rounding-off for Numerical Values & Expression and Judgement
of Limiting Values;
GB/T 8888 Wrought Heavy Non-ferrous Metal Products - Packing, Marking,
Transportation, Storing and Certificate of Quality;
GB/T 26303.3 Measuring Methods for Dimensions and Shapes of Wrought Copper
and Copper Alloys - Part 3: Sheets and Strips;
GB/T 34505-2017 Copper and Copper Alloy Materials - Tensile Testing at Room
Temperature;
YS/T 347 Copper and Copper Alloys - Estimation of Average Grain Size;
YS/T 482 Methods for Analysis of Copper and Copper Alloys - The Atomic Emission
Spectrometry;
YS/T 483 Methods for Analysis of Copper and Copper Alloys - X-Ray Fluorescence
Spectrometric (wavelength dispersive);
hardness of sheet shall comply with the stipulations in GB/T 4340.1.
Table 9 -- Tensile Sample
4.4 Grain Size
Test method of grain size of sheet shall comply with the stipulations in YS/T 347.
4.5 Surface Quality
Surface quality of sheet shall receive visual inspection.
5 Inspection Rules
5.1 Inspection and Acceptance Inspection
5.1.1 Sheet shall be inspected by the supply side, which shall guarantee that product
quality complies with the requirements of this Standard and the order form (or contract).
Moreover, quality certificate shall be filled out.
5.1.2 The demand-side shall inspect the received products in accordance with the
stipulations in this Standard. If the inspection result does not comply with the
requirements of this Standard or the order form (or contract), this shall be proposed to
the supply-side in the written form; and solved by the demand-side and the supply-side
through negotiation. Objections regarding surface quality and dimensional deviations
shall be proposed within 1 month upon receiving the products. Other quality objections
shall be proposed within 3 months upon receiving the products. If arbitration is needed,
arbitration sampling shall be jointly conducted by the demand-side and the supply-side.
5.2 Group Batch
Sheet shall be submitted for acceptance inspection in batches. Each batch shall be
constituted of sheets of the same designation, status and specification. The weight of
each batch shall be not more than 4,500 kg (if that batch is under the same furnace
No., then, batch weight may not be restricted).
5.3 Inspection Items
5.3.1 Each batch of sheets shall receive inspection of chemical composition,
dimensions and allowable deviations, and surface quality.
Thickness/mm Sample Type
P01 in Table 3 in GB/T 34505-2017
P02 in Table 3 in GB/T 34505-2017
sheet shall be determined as disqualified.
5.5.4 When there are samples that are disqualified in the inspection result of
mechanical properties and grain size, take a double size of samples for re-inspection
from that batch of sheets (including the sheet that is disqualified in the previous
inspection). If the re-inspection result is completely qualified, then, that batch of sheets
shall be determined as qualified. If the re-inspection result is still disqualified, then, that
batch of sheets shall be determined as disqualified. Or, the supply-side may inspect
sheet by sheet, and deliver those that are qualified.
6 Marking, Packaging, Transportation, Storage and
Quality Certificate
Products’ marking, packaging, transportation, storage and quality certificate shall
comply with the stipulations in GB/T 8888.
7 Order Form (or contract) Content
Order form (or contract) content of materials listed in this Standard shall include the
following content:
a) Product name;
b) Designation (code);
c) Status of supply;
d) Weight;
e) Dimensional precision (common grade or high-precision grade);
f) Either tensile test or hardness test (choose one from them);
g) Determination of grain size (when the demand-side requests);
h) Serial No. of this Standard;
i) Others.
__________ END __________
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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