GB/T 24183-2021 PDF English
US$170.00 · In stock · Download in 9 secondsGB/T 24183-2021: Metallic materials - Sheet and strip - Earing test 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 24183: Evolution and historical versions
Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
GB/T 24183-2021 | English | 170 |
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Metallic materials - Sheet and strip - Earing test
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GB/T 24183-2009 | English | 239 |
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Metallic materials -- Earing test
| Obsolete |
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GB/T 24183-2021: Metallic materials - Sheet and strip - Earing test---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/GBT24183-2021
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.040.10
CCS H 23
GB/T 24183-2021 / ISO 11531:2015
Replacing GB/T 24183-2009
Metallic materials - Sheet and strip - Earing test
(ISO 11531:2015, IDT)
ISSUED ON: AUGUST 20, 2021
IMPLEMENTED ON: MARCH 01, 2022
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... 5
4 Symbols and their meanings ... 5
5 Principle ... 7
6 Test equipment ... 7
7 Test piece ... 8
8 Test procedure ... 8
9 Interpretation of results ... 9
10 Test report ... 10
FOREWORD
This document was drafted in accordance with the rules given in GB/T 1.1-2020,
“Directives for standardization - Part 1: Rules for the structure and drafting of
standardizing documents”.
This document replaces GB/T 24183-2009 "Metallic materials - Earing test". Compared
with GB/T 24183-2009, except for structural adjustment and editorial changes, the main
technical changes are as follows:
-- Change the description of db; add the symbols and meanings of N ear peaks and N ear
valleys (see Chapter 3; Chapter 3 of version 2009);
-- Change the requirements in the note of 5.3 to be part of the content of 6.3 of the
main text (see 6.3; note of 5.3 of version 2009);
-- Change the requirements in the note of 5.4 to be part of the content of 6.4 of the
main text (see 6.4; note of 5.4 of version 2009);
-- Clarify that the working surface hardness requirements of die, blankholder and
punch refer to Vickers hardness (see 6.5);
-- Add rounding requirements for ear height expressed as a percentage (see 9.4).
This document is equivalent to ISO 11531:2015 “Metallic materials - Sheet and strip -
Earing test”.
Two chapters – “Normative references” and “Terms and definitions” – are added to this
document.
The following minimal editorial changes are made to this document:
-- Add the index number of “test piece” in Figure 2;
-- Add a “Note” to 8.3, supplementing that engine oil can be selected as the lubricant.
Please note that some of the contents of this document may involve patents. The issuing
organization of this document is not responsible for identifying patents.
This document was proposed by China Iron and Steel Industry Association.
This document shall be under the jurisdiction of National Technical Committee 183 on
Iron and Steel of Standardization Administration of China (SAC/TC 183).
The drafting organizations of this document: Shanghai Customs of the People’s
Republic of China, Inspection Center of Industrial Products & Raw Materials, Shanghai
Shenli Testing Machine Co., Ltd., Shenzhen Wance Testing Machine Co., Ltd., China
Metallic materials - Sheet and strip - Earing test
1 Scope
This document specifies a method for determining the ear height of metal sheet and
strip after deep drawing.
This document applies to metal sheet and strip of nominal thickness of 0.1 mm ~ 3 mm.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
There are no terms and definitions that need to be defined in this document.
4 Symbols and their meanings
The meanings of the symbols used in the earing test are given in Table 1, and illustrated
in Figures 1 and 2.
...... Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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