prSRPS EN 10355:2026

Chemical analysis of ferrous materials - Inductively coupled plasma optical emission spectrometric analysis of unalloyed and low alloyed steels - Determination of Si, Mn, P, Cu, Ni, Cr, Mo and Sn, following dissolution with nitric and sulphuric acids

Scope

This document specifies an inductively coupled plasma optical emission spectrometry routine
method for the analysis of unalloyed and low alloyed steels, with an iron content of at least 95 %.
This document differs from the similar standard EN 10351:2011 in that it is optimised for the
determination of silicon.
This method is applicable to the elements listed in Table 1 within the ranges shown.
The sample preparation described may not completely dissolve samples having a combination of
high chromium and substantial carbon. Incomplete dissolution may also affect the determination
of manganese and molybdenum in these samples. For this reason, the scope of the method is
limited to chromium contents = 0,9 %, whereas the scope of EN 10351 covers a range of up to
1,6 % chromium.
Table 1 - Application ranges
Element Mass fraction %
min. max.
Si 0,020 0,45
Mn 0,005 1,40
P 0,005 0,10
Cu 0,005 0,60
Ni 0,010 2,00
Cr 0,010 0,90
Mo 0,005 0,60
Sn 0,010 0,10
NOTE For tin, see NOTE 2 under Clause 11.
In all cases, the ranges specified can be extended or adapted (after validation) for the
determination of other mass fractions, provided that the iron content in the samples under
concern is above 95 %.
Other elements may be included. However such elements and their mass fractions are to be
carefully checked, taking into account the possible interferences, the sensitivity, the resolution
and the linearity criteria of each instrument and each wavelength.
Depending also on the sensitivity of each instrument, suitable dilutions of the calibration and the
test sample solutions may be necessary.
Moreover, even if the method described is "multi elemental", it is not absolutely necessary to
carry out the determination of all the elements of its scope simultaneously. The measurement
conditions have to be optimised by each laboratory, depending on the performances of each
apparatus available.