What is BS 3630-16 – Zinc and zinc alloys about?
BS 3630-16 is a British standard and a part of the BS 3630 series that discusses the nickel in zinc alloys using the photometric method for the sampling and analysis of zinc alloys. Zinc (Zn) is used to make several alloys due to its galvanizing and sacrificial properties. It is historically alloyed with copper to make brass, which contains between 55% zinc and 95% copper.
Who is BS 3630-16 – Zinc and zinc alloys for?
BS 3630-16 on the nickel in zinc alloys applies to:
- Manufacturer of zinc alloys products
- Quality testing personnel
- Design engineers
Why should you use BS 3630-16 – Zinc and zinc alloys?
Higher nickel amounts make the colour of this alloy look more silver or white. The higher amounts of zinc will slightly improve its corrosion resistance, lowers the point of melting, raises its hardness and strength, and decreases the ductility. Photometric measurement, or photometry, is a technique that can be used to measure the concentration of organic and inorganic compounds in solution by determining the absorbance of specific wavelengths of light.
BS 3630-16 specifies the principle in which the sample is dissolved in hydrochloric acid. The dimethylglyoxime complex of the nickel is formed in ammoniacal citrate solution and the complex is extracted into chloroform. The determination is completed photometrically. This method helps you in sampling and analysing the zinc and zinc alloys and manufacturing it in a standardized way.
BS 3630-16 provides you with comprehensive guidance useful throughout the process of sampling and analysis of zinc and zinc alloys.