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GB/T 18449.4-2022 English PDF

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US$514.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 18449.4-2022: Metallic materials - Knoop hardness test - Part 4: Tables of hardness values
Status: Valid

GB/T 18449.4: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 18449.4-2022	514	Add to Cart	5 days	Metallic materials - Knoop hardness test - Part 4: Tables of hardness values	Valid
GB/T 18449.4-2009	RFQ	ASK	6 days	Metallic materials -- Knoop hardness test -- Part 4: Tables of hardness values	Obsolete

Similar standards

GB/T 17394.4 GB/T 17394.1 GB/T 17600.2 GB/T 45169 GB/T 18449.1 GB/T 18449.3

Basic data

Standard ID: GB/T 18449.4-2022 (GB/T18449.4-2022)
Description (Translated English): Metallic materials - Knoop hardness test - Part 4: Tables of hardness values
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H22
Word Count Estimation: 26,250
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 18449.4-2022: Metallic materials - Knoop hardness test - Part 4: Tables of hardness values

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Metallic materials - Knoop hardness test - Part 4.Tables of hardness values ICS 77.040.10 CCSH22 National Standards of People's Republic of China Replacing GB/T 18449.4-2009 Knoop hardness test of metal materials Part 4.Table of hardness values (ISO 4545-4.2017, IDT) Published on 2022-03-09 2022-10-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration directory Preface I Introduction II 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Knoop hardness table 1

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" drafted. This document is part 4 of GB/T 18449 "Knoop Hardness Test for Metallic Materials". GB/T 18449 has issued the following part. --- Part 1.Test methods; --- Part 2.Inspection and calibration of hardness testers; --- Part 3.Calibration of standard hardness blocks; --- Part 4.Table of hardness values. This document replaces GB/T 18449.4-2009 "Knoop Hardness Test for Metallic Materials Part 4.Table of Hardness Values", and Compared with GB/T 18449.4-2009, in addition to structural adjustment and editorial changes, the main technical changes are as follows. --- Delete the calculation formula of Knoop hardness value (see Chapter 3 of the.2009 edition); --- Increased the hardness values of HK0.001, HK0.002, HK0.005 and HK2 scales (see Table 1). This document is identical to ISO 4545-4.2017 "Knoop Hardness Test for Metallic Materials Part 4.Table of Hardness Values". Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by China Iron and Steel Association. This document is under the jurisdiction of the National Steel Standardization Technical Committee (SAC/TC183). This document is drafted by. General Iron and Steel Research Institute, Shanghai Marine High-end Equipment Functional Platform Co., Ltd., Zhejiang Special Equipment Research Institute Research Institute, Metallurgical Industry Information Standards Research Institute, Steel Research Nanogram Testing Technology Co., Ltd. The main drafters of this document. Gao Yifei, Dong Li, Zhou Luhai, Jin Ying, Wang Hongbin, Zhong Fengping, Shi Honglei, Hou Huining. This document was first published in.2009 and this is the first revision.

Introduction

GB/T 18449 "Knoop Hardness Test of Metallic Materials" aims to standardize the test method of Knoop hardness of metallic materials, the inspection and calibration of hardness testers Standard, standard hardness block calibration and hardness value and so on. GB/T 18449 consists of four parts. --- Part 1.Test methods; --- Part 2.Inspection and calibration of hardness testers; --- Part 3.Calibration of standard hardness blocks; --- Part 4.Table of hardness values. This document provides a comparison table between the diagonal length of indentation under 0.009807N~19.613N and the corresponding Knoop hardness value, which is convenient for standard application. User access and use. Knoop hardness test of metal materials Part 4.Table of hardness values

1 Scope

The table of hardness values given in this document applies to the Knoop hardness test in accordance with ISO 4545-1.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document. ISO 4545-1 Knoop Hardness Tests for Metallic Materials Part 1.Test Methods (Metalicmaterials-Knoop hardnesstest-Part 1.Testmethod) Note. GB/T 18449.1-2009 Knoop hardness test of metallic materials Part 1.Test method (ISO 4545-1.2005, MOD)

3 Terms and Definitions

There are no terms and definitions that need to be defined in this document.

4 Knoop hardness table

Table 1 gives a table of Knoop hardness values calculated according to the ISO 4545-1 Knoop hardness formula. ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 18449.4-2022_English be delivered?

Answer: Upon your order, we will start to translate GB/T 18449.4-2022_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 18449.4-2022_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 18449.4-2022_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 18449.4-2022?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 18449.4-2022 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.