YS/T 221-2011 English PDF

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YS/T 221-2011: Beryllium metal pebbles
Status: Valid

YS/T 221: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
YS/T 221-2011	159	Add to Cart	3 days	Beryllium metal pebbles	Valid
YS/T 221-1994	199	Add to Cart	2 days	(Beryllium metal beads)	Obsolete

Similar standards

GB/T 2524   GB/T 3620.1   YS/T 236   YS/T 582   YS/T 580   YS/T 577   

Basic data

Standard ID: YS/T 221-2011 (YS/T221-2011)
Description (Translated English): Beryllium metal pebbles
Sector / Industry: Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard: H64
Classification of International Standard: 77.150.99
Word Count Estimation: 6,620
Date of Issue: 2011-12-20
Date of Implementation: 2012-07-01
Older Standard (superseded by this standard): YS/T 221-1994
Quoted Standard: GJB 2513A-2008
Regulation (derived from): ?MIIT Announcement 2011 No.43
Issuing agency(ies): Ministry of Industry and Information Technology
Summary: This standard specifies the requirements for beryllium metal beads, test methods, inspection rules and signs, packaging, transport, storage, quality certificate and contract (or order form) content. This standard applies to beryllium fluoride, magnesium thermal reduction method were beryllium metal beads.

YS/T 221-2011: Beryllium metal pebbles

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Beryllium metal pebbles ICS 77.150.99 H64 People's Republic of China Nonferrous Metals Industry Standard Replacing YS/T 221-1994 Beryllium metal beads Issued on. 2011-12-20 2012-07-01 implementation Ministry of Industry and Information Technology of the People's Republic of China released

Foreword

Instead of the standard YS/T 221-1994 "beryllium metal beads." The main changes compared to "beryllium metal beads" This standard YS/T 221-1994 as follows. --- Original Grades Be-02, Be-01, Be-1 were changed to Be-1, Be-2, Be-4; --- Added a product designation Be-3; --- Be-1 increased the content of Co, B, Cd, Ag, Sm, Eu, Gd, Dy, Li's requirements; Si content --- Be-1 made 0.006% to 0.01%; Fe content --- Be-2 made 0.105% to 0.10%; --- Be-2 in the "128Pa", "67.3Pa", "53Pa" were changed to "1.28 cents target", "0.673 cents target", "0.53 cents target"; --- Be-2 and Be-1 impurity fluctuation range to the original standard 1/2; delete the words "provided in each product allows 1/3 of iron, chromium, Nickel, manganese, boron, have overrun fluctuation "and" every time supplier for sampling analysis, sampling volume of shipments of 1/3 ~ 1/4 "; --- Product size from "not less than 1mm" to "not less than 2mm"; --- Inspection Rules "from the date of receipt within six months" with "the date of receipt of the goods within 90 days"; --- Arbitration sampling method, from the "batch by large, medium and small particles sampled" to "uniform sampling"; --- "Net weight of not more than 10kg" changed to "by Batch with barrel, net weight of not more than 30kg". This standard by the national non-ferrous metals Standardization Technical Committee (SAC/TC243) and focal points. This standard was drafted. Shuikoushan Hunan Nonferrous Metals Group Co., Ltd., Northwest Rare Metal Materials Research Institute. The main drafters of this standard. Wang Ping, Li Wei, Li Yufeng, Liu Liuhui, Shu Gang, Dong Qun Wei. This standard replaces the standards previously issued as follows. --- YS/T 221-1994; --- GB n262-1986; --- YB855-1975. Beryllium metal beads

1 Scope

This standard specifies the beryllium metal beads requirements, test methods, inspection rules and signs, packaging, transportation, storage, quality certificate and contract (Or orders) content. This standard applies to beryllium fluoride magnesium thermal reduction process was beryllium metal beads.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GJB2513A-2008 Methods for chemical analysis of beryllium

3 Requirements

3.1 Categories Beryllium metal bead according to chemical composition divided into four grades. Be-1, Be-2, Be-3, Be-4. 3.2 Chemical composition Beryllium metal beads 3.2.1 The chemical composition shall comply with the requirements of Table 1. Table 1 chemical composition of the metal beryllium beads Grades Be-1 Be-2 Be-3 Be-4 Impurity content/%, no greater than Fe 0.05 0.10 0.12 0.25 Al 0.02 0.15 0.20 0.25 Si 0.01 0.06 0.08 0.1 Cu 0.005 0.015 0.02 - Pb 0.002 0.003 0.003 0.005 Zn 0.007 0.01 0.02 - Ni 0.002 0.008 0.015 0.025 Cr 0.002 0.013 0.015 0.025 Mn 0.006 0.015 0.015 0.028 Co 0.0005 0.0005 0.001 - B 0.0001 0.0001 0.0001 - Cd 0.00004 0.00004 0.00004 - Ag 0.0003 0.0003 0.0003 - ......

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