YS/T 551-2020 English PDF

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YS/T 551-2020: (Copper alloy rod for CNC lathe)
Status: Valid

YS/T 551: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
YS/T 551-2020	279	Add to Cart	3 days	(Copper alloy rod for CNC lathe)	Valid
YS/T 551-2009	559	Add to Cart	3 days	Copper alloy rod and bar for use in numerical control lathe	Obsolete
YS/T 551-2006	199	Add to Cart	2 days	Ground brass rods	Obsolete

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Basic data

Standard ID: YS/T 551-2020 (YS/T551-2020)
Description (Translated English): (Copper alloy rod for CNC lathe)
Sector / Industry: Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard: H62
Word Count Estimation: 13,111
Date of Issue: 2020-12-09
Date of Implementation: 2021-04-01
Older Standard (superseded by this standard): YS/T 551-2009
Regulation (derived from): Ministry of Industry and Information Technology Announcement No. 48 (2020)
Issuing agency(ies): Ministry of Industry and Information Technology

YS/T 551-2009: Copper alloy rod and bar for use in numerical control lathe

---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.
Copper alloy rod and bar for use in numerical control lathe ICS 77.150.30 H62 People's Republic of China Nonferrous Metals Industry Standard Replacing YS/T 551-2006 CNC lathes copper alloy rod Posted 2009-12-04 2010-06-01 implementation Ministry of Industry and Information Technology of the People's Republic of China released

Foreword

The Standard is a modified "on threading machine cutting brass rods, bars and profiles," the United States and the United States ASTM ASTMB16-2005 B301-2004 "cutting copper rod, bars and profiles", combined with the development of China's CNC lathe with the actual situation of the copper alloy rod conducted. The standard Quasi Appendix C Reference Japanese copper and copper alloy machinability testing, evaluation methods. This standard US ASTMB16-2005 and ASTMB301-2004 differences. --- Based on US standards, an increase of HPb59-3, HPb60-2, HSb60-0.9, HSb61-0.8-0.5, HBi60-1.3, QSn4-4-4 grades, in addition to the United States C14510, C14520, C18700 grade; increased fracture detection of a predetermined degree of twisting And ultrasonic flaw detection test, the residual stress test, resistance to dezincification corrosion detection, cutting testing provisions chamfered deleted electricity Resistivity and conductivity detection requirements; increased requirements rod straightness; status bar, specifications were modified accordingly; The rest are basically the same with ASTMB16-2005 and ASTMB301-2004. Instead of the standard YS/T 551-2006 "brass polished bar" (the original national standard GB/T 13812-1992), because the original standard H62 finish Rod cutting resistance, not easy to retreat crumbs, does not apply to high-speed CNC machining lathe, the original standard in technology and applications obsolete. Compared with this standard YS/T 551-2006, the main amended as follows. --- Increased HPb59-3, HPb60-2, HPb62-3, HSb60-0.9, HSb61-0.8-0.5, HBi60-1.3, QSn4-4-4, QTe0.5, QS0.4 grades. Antimony brass HSb60-0.9, HSb61-0.8-0.5 bismuth and lead-free brass HBi60-1.3 brass; --- Deleted H62 grade; --- BARS specifications and tolerances were adjusted, and increases the Moment (square), the relevant provisions of hexagonal rod; --- On the rod length or double length tolerances were adjusted and increased sawing segment saw volume requirements; --- Rods for straightness, roundness and not length length adjustment; --- For the moment (square) shape, hexagonal bars fillet radius of the corresponding provisions; --- Increasing the amount of rod ends cut oblique, twisted and screwed in degree chamfer; --- Remove the surface roughness of the provisions; --- Increasing the cutting detection methods; --- Increasing the bar ultrasonic flaw detection test, resistance to dezincification corrosion testing requirements; --- Non-hazardous according to international environmental protection requirements, in order to increase the content of the contract whether the hazardous mark provisions. Appendix A of this standard is a normative appendix, Appendix B, Appendix C are informative appendices. This standard by the National Standardization Technical Committee of non-ferrous metals and centralized. This standard by Ningbobowei Group Co., Ltd. is responsible for drafting. This standard was drafted. Xie Xiao, Zhang, Cai JI Hua, Liu. This standard replaces the standards previously issued as follows. --- YS/T 551-2006. CNC lathes copper alloy rod

1 Scope

This standard specifies the CNC lathe copper alloy rod requirements, test methods, inspection rules, marking, packaging, transportation, storage and orders (Or contract) content. This standard applies to all industrial sectors with a high-speed high-precision CNC lathes and machining circular, rectangular (square) shape, hexagonal copper alloy rod.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 228 metal materials at room temperature tensile test method GB/T 2828.1 Sampling procedures for inspection - Part 1. by acceptance quality limit (AQL) retrieval batch inspection sampling plan GB/T 3310 copper alloy rods ultrasonic flaw detection method GB/T 5121 (all parts) of copper and copper alloys - GB/T 5231 Wrought copper and copper alloy chemical composition and shape of the product GB/T 8888 heavy non-ferrous metal processing products, packaging, labeling, transportation and storage GB/T 10119 Determination of brass resistant to dezincification corrosion GB/T 10567.1 copper and copper alloy processing residual stress - Mercury nitrate test test method GB/T 10567.2 copper and copper alloy processing material residual stress - Ammonia test test method YS/T 336 copper, nickel and alloy pipe and bar fracture test method JJG117 flat test procedures

3 Product Categories

3.1 product grades, status, specifications Product grades, status, size should be in accordance with Table 1. Table 1 Product grades, status, specifications Grade status in diameter (the minimum distance between parallel surfaces)/mm HPb59-1, HPb59-3, HPb60-2 (C37700), HPb62-3 (C36000), HPb63-3 Semi-hard (Y2) Hard (Y) 4 to 80 4-40 HSb60-0.9, HSb61-0.8-0.5, HBi60-1.3 Semi-hard (Y2) Hard (Y) 4 to 80 4-40 QTe0.5 (C14500), QS0.4 (C14700) Semi-hard (Y2) Hard (Y) 4 to 80 4-40 QSn4-4-4 Semi-hard (Y2) Hard (Y) 4-20 Note 1. by mutual agreement, other specifications for bars, but also into a disk supplier. Note 2. the ASTM (American Society for Testing and Materials) standards corresponding to the grades given in Appendix B. ......

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