JB/T 9550-2011Technical specification for copper-bismuth-silver electrical contact materials (English PDF)

1 Foreword

JB/T 9550-2011 was issued by MIIT on 20 December 2011 and has been in force since 1 April 2012.

It replaces the earlier edition JB/T 9550-1999.

2 Scope

This standard is a recommended Chinese machinery industry standard for copper-bismuth-silver electrical contact materials. It lays down the technical requirements for the material, the test methods, the inspection rules and the provisions for marks and labels, packaging, transport and storage. It applies to the production and the inspection of contact-material ingots obtained by vacuum melting, and the material is used mainly in vacuum circuit breakers of 10 kV and below. The standard carries Chinese classification K14 and international classification 29.120.99, and was issued by the Ministry of Industry and Information Technology. Among the standards it cites are GB/T 2828.1-2003, several parts of GB/T 5121 and JB/T 5351. It supersedes JB/T 9550-1999.

3 Normative references

JB/T 9550-2011 cites a number of standards, which apply in full or in part through the references made to them in its clauses. Those listed below are the ones the catalogue record shows; the record cuts the list short, so it may not be complete.

GB/T 2828.1-2003

GB/T 5121.10-2008 — Methods for chemical analysis of copper and copper alloys -- Part 10: Determination of tin content

GB/T 5121.11-2008 — Methods for chemical analysis of copper and copper alloys -- Part 11: Determination of zinc content

GB/T 5121.1-2008 — Methods for chemical analysis of copper and copper alloys -- Part 1: Determination of copper content

GB/T 5121.12-2008 — Methods for chemical analysis of copper and copper alloys -- Part 12: Determination of antimony content

GB/T 5121.13-2008 — Methods for chemical analysis of copper and copper alloys -- Part 13: Determination of aluminium content

GB/T 5121.14-2008 — Methods for chemical analysis of copper and copper alloys -- Part 14: Determination of manganese content

GB/T 5121.15-2008 — Methods for chemical analysis of copper and copper alloys - Part 15:Determination of cobalt content

GB/T 5121.16-2008 — Methods for chemical analysis of copper and copper alloys -- Part 16: Determination of chromium content

GB/T 5121.17-2008 — Methods for chemical analysis of copper and copper alloys Part 17:Determination of beryllium content

GB/T 5121.18-2008 — Methods for chemical analysis of copper and copper alloys - Part 18:Determination of magnesium content

GB/T 5121.19-2008 — Methods for chemical analysis of copper and copper alloys - Part 19:Determination of silver content

GB/T 5121.20-2008 — Methods for chemical analysis of copper and copper alloys - Part 20:Determination of zirconium content

GB/T 5121.21-2008 — Methods for chemical analysis of copper and copper alloys - Part 21:Determination of titanaum content

GB/T 5121.2-2008 — Methods for chemical analysis of copper and copper alloys -- Part 2: Determination of phosphorus content

GB/T 5121.22-2008 — Methods for chemical analysis of copper and copper alloys -- Part 22: Determination of cadmium content

GB/T 5121.23-2008 — Methods for chemical analysis of copper and copper alloys - Part 23:Determination of silicon content

GB/T 5121.24-2008 — Methods for chemical analysis of copper and copper alloys - Part 24:Determination of selenium and tellurium content

GB/T 5121.25-2008 — Methods for chemical analysis of copper and copper alloys - Part 25: Determination of boron content

GB/T 5121.26-2008 — Methods for chemical analysis of copper and copper alloys - Part 26:Determination of mercury content

GB/T 5121.27-2008 — Methods for chemical analysis of copper and copper alloys - Part 27:The inductively coupled plasma atomic emission spectromertric method

GB/T 5121.28-2010

GB/T 5121.3-2008 — Methods for chemical analysis of copper and copper alloys -- Part 3: Determination of lead content

GB/T 5121.4-2008 — Methods for chemical analysis of copper and copper alloys -- Part 4: Determination of carbon and sulfur content

GB/T 5121.5-2008 — Methods for chemical analysis of copper and copper alloys -- Part 5: Determination of nickel content

GB/T 5121.6-2008 — Methods for chemical analysis of copper and copper alloys - Part 6:Determination of bismuth content

GB/T 5121.7-2008 — Methods for chemical analysis of copper and copper alloys -- Part 7: Determination of arsenic content

GB/T 5121.8-2008

GB/T 5121.9-2008 — Methods for chemical analysis of copper and copper alloys -- Part 9: Determination of iron content

JB/T 5351

4 About this standard

Issued by: MIIT

English translation: about 15 pages

5 Related standards

Other editions:

JB/T 9550-1999 (earlier edition)

6 Classification and status

International classification (ICS): 29.120.99

Prefix JB/T: recommended standard.