**What is BS 1728-25 – Aluminium and aluminium alloys about?**

BS 1728-25 is a British standard and is a part of the BS 1728 series that discusses the titanium using spectrophotometric chromotropic acid method for the analysis of aluminium and aluminium alloys. Aluminium alloys are widely used in engineering structures and components where light weight or corrosion resistance is required.

BS 1728-25 specifies a general method for the spectrophotometric determination of titanium in aluminium and aluminium alloys. The method applies to products having titanium contents between 0,005 and 0,3 % (m/m).

Note: The method does not apply completely to alloys having silicon contents greater than 1 % (m/m), for which it must be modified as indicated in the Annex.

**Who is BS 1728-25 – Aluminium and aluminium alloys for?**

BS 1728-25 on aluminium alloys applies to:

Manufacturer of aluminium products
Aerospace manufacturer
Quality testing personnel
Design engineers
Laboratory testing

**Why should you use BS 1728-25 – Aluminium and aluminium alloys?**

Aluminium alloys are widely used in engineering structures and components where light weight or corrosion resistance is required. Alloys composed mostly of aluminium have been very important in aerospace manufacturing since the introduction of metal-skinned aircraft. Titanium is as strong as steel but much less dense. It is therefore important as an alloying agent with many metals including aluminium, molybdenum and iron.

BS 1728-25 helps you with the general method by providing the spectrophotometric measurements in which the spectrophotometric measurements are not less than 15 min and not more than 40 min. This helps you with the analysis of aluminium and aluminium alloys.

BS 1728-25 provides you with comprehensive guidance useful throughout the process of analysis of aluminium and aluminium alloys.

BS 1728-25:1980

Methods for the analysis of aluminium and aluminium alloys - Titanium (spectrophotometric chromotropic acid method)

Current, Under Review

Published:

31 Mar 1980