BS 6744 Composition and Mechanical of Stainless Steel

BS 6744 stainless steel bars for the reinforcement of and use in concrete. 2009 version is substantially the same as the 2001 edition but with the addition of 2 lean duplex steel 1.4162 and 1.4362.  These steel have the benefit of having a lower nickel content than the standard austenitic grades such as 304 1.4301 and 316 1.4401. They are therefore less prone to large variations in price.

The grade designations are harmonized with the European steel number system, but currently there is no European standard for these products.

The steels included in BS 6744 can also be found in EN 10088-3. The specified composition ranges are the same, but with some differences in the number of decimal places for the percentages of some elements shown. The ranges are however shown in this article. The tensile strength properties are also included in this article, but these are not expressed in the same way as in EN 10088-3, the general standard for stainless steel bars. The strength levels for bars to BS 6744 are expressed as the 'Grade' and indicate the proof strength of the steel. Guidance on steel number selection in a range of service environments is given in Annex B of the standard.