CEN/TR 10261 Iron and Steel - European Standards for the Determination of Chemical Composition

The standard “CEN/TR 10261 Iron and steel - European standards for the determination of chemical composition” published by the European Committee for Standardization (CEN) lists, under Clause 4, the European standards currently available for the determination of the chemical composition of steel and cast iron. Clause 5 gives details about the range of application of this standard and explains the principle of the method described in each standard.

The annexes of this standard are arranged as follows:

• Annex A gives a list of other European standards and CEN technical reports applicable to the determination of the chemical composition of steels and cast irons.
• Annex B gives a list of withdrawn European standards together with any relevant replacement European standards.
• Annex C contains graphical representations of the content ranges of the methods listed in this standard. Figures provided in the standard include:
  • Figure C.1, content ranges of referee methods
  • Figure C.2, content ranges of routine methods
  • Figure C.3 shows the application areas of all the methods described.
• Appendix D provides a trilingual key to the abbreviations used in the figures in Appendix C.

Three methods valid for the analysis of some ferroalloys are listed in Appendix A.

For the purposes of this standard, the following terms and definitions apply:

• Arbitrator method refers to a stoichiometric method or a method calibrated against pure metals or stoichiometric compounds to be used in certification analysis or in the event of arbitration. Due to lack of accuracy or the small number of laboratories participating in the relevant verification tests, some stoichiometric methods or methods calibrated against pure metals or stoichiometric compounds cannot be accepted as arbiter methods. These are published as CEN/TR.
• Routine method refers to the method commonly used for control purposes (daily analysis), calibrated against reference materials or certified reference materials or commercially available standard solutions.

The European standards for determining the chemical composition of steel and iron are:

• Single element methods:
  • Aluminum
    • EN 29658 Steel - Determination of aluminium content - Flame atomic absorption spectrometric method (ISO 9658)
  • Arsenic
    • EN 10212 Chemical analysis of ferrous materials - Determination of arsenic in steel and iron - Spectrophotometric method
  • Bor
    • EN 10200 Chemical analysis of ferrous materials - Determination of boron in steels - Spectrophotometric method
    • EN ISO 13900 Steel - Determination of boron content - Spectrophotometric method of curcumin after distillation (ISO 13900)
  • Calcium
    • EN 10177:2019, Steels - Determination of calcium content - Flame atomic absorption spectrometric method (FAAS)
  • carbon fibre
    • EN ISO 15349-2 Non-alloyed steel - Determination of low carbon content - Part 2: Infrared absorption method after combustion in an induction furnace (with preheating) (ISO 15349-2)
    • EN ISO 9556 Steel and iron - Determination of total carbon content - Infrared absorption method after combustion in an induction furnace (ISO 9556)
  • Chrome
    • CEN/TR 10367 Alloy steels - Determination of chromium content - Inductively coupled plasma optical emission spectrometric method
    • EN 10188 Chemical analysis of ferrous materials - Determination of chromium in steels and irons - Flame atomic absorption spectrometric method
    • EN 24937 Steel and iron - Determination of chromium content - Potentiometric or visual method (ISO 4937)
    • EN 24937 Steel and iron - Determination of chromium content - Potentiometric or visual method (ISO 4937)
  • Cobalt
    • EN ISO 11652 Steel and iron - Determination of cobalt content - Flame atomic absorption spectrometric method (ISO 11652)
  • Virgin
    • EN ISO 4943 Steel and cast iron - Determination of copper content - Flame atomic absorption spectrometric method (ISO 4943)
    • EN ISO 4946 Steel and cast iron - Determination of copper - 2,2'-Bicinoline spectrophotometric method (ISO 4946)
  • Bullet
    • EN 10181 Steels - Determination of lead content - Flame atomic absorption spectrometric method (FAAS)
  • Manganese
    • EN 10071 Chemical analysis of ferrous materials - Determination of manganese in steel and iron - Electrometric titration method
    • EN ISO 10700 Steel and iron - Determination of manganese content - Flame atomic spectrometric method (ISO 10700)
  • Nickel
    •  EN 10136 Steels and cast irons - Determination of nickel content - Flame atomic absorption spectrometric method (FAAS)
    • EN 10361 Alloy steels - Determination of nickel content - Inductively coupled plasma optical emission spectrometric method
    • EN ISO 4938 Steel and iron - Determination of nickel content - Gravimetric or titrimetric method (ISO 4938)
  • niobium
    • EN 10178 Chemical analysis of ferrous materials - Determination of niobium in steels - Spectrophotometric method
  • Nitrogen
    • EN 10179 Chemical analysis of ferrous materials - Determination of nitrogen in steels (trace amounts) - Spectrophotometric method
    • EN ISO 4945 Steel - Determination of nitrogen - Spectrophotometric method (ISO 4945)
    • EN ISO 10720 Steel and iron - Determination of nitrogen content - Thermal conductivity method after fusion in an inert gas stream (ISO 10720)
    • EN ISO 15351 Steel and iron - Determination of nitrogen content - Thermal conductivity method after fusion in an inert gas stream (Routine method) (ISO 15351)
  • Oxygen
    • EN 10276-1 Chemical analysis of ferrous materials - Determination of oxygen in steel and iron - Part 1: Sampling and preparation of steel samples for oxygen determination
    • EN 10276-2 Chemical analysis of ferrous materials - Determination of oxygen content in steel and iron - Part 2: Infrared method after fusion under inert gas
  • Phosphorus
    • EN 10184 Chemical analysis of ferrous materials - Determination of phosphorus in non-alloyed steels and irons - Molybdenum blue spectrophotometric method
    • EN ISO 10714 Steel and iron - Determination of phosphorus content - Phosphovanadomolybdate spectrophotometric method (ISO 10714)
  • Selenium
    • CEN/TR 10362 Chemical analysis of ferrous materials - Determination of selenium in steels - Electrothermal atomic absorption spectrometric method
  • Silicon
    • EN ISO 4829-1 Steel and cast iron - Determination of total silicon content - Reduced molybdosilicate spectrophotometric method - Part 1: Silicon content between 0,05 and 1,0% (ISO 4829-1)
    • EN ISO 4829-2 Steels - Determination of total silicon content - Reduced molybdosilicate spectrophotometric method - Part 2: Silicon content between 0,01 and 0,05% (ISO 4829-2)
    • EN ISO 439 Steel and cast iron - Determination of silicon content - Gravimetric method (ISO 439)
  • Sulfur
    • EN 24935 Steel and iron - Determination of sulphur content - Infrared absorption method after combustion in an induction furnace (ISO 4935)
    • EN ISO 4934 Steel and iron - Determination of sulphur content - Gravimetric method (ISO 4934)
  • Titanium
    • EN 10211 Chemical analysis of ferrous materials - Determination of titanium in steel and cast iron - Flame atomic absorption spectrometric method
    • EN ISO 10280 Steel and iron - Determination of titanium content - Diantypyrylmethane spectrophotometric method (ISO 10280)
  • Vanadium
    • EN ISO 4947 Steel and cast iron - Determination of sulphur content, vanadium content - Potentiometric titration method (ISO 4947)
    • EN ISO 9647 Steel - Determination of vanadium content - Flame atomic absorption spectrometric method (FAAS)
• Multi-element methods:
  • Aluminum, chromium, cobalt, copper, manganese, molybdenum, nickel, phosphorus, tin and vanadium
    • EN 10351 Chemical analysis of ferrous materials - Inductively coupled plasma optical emission spectrometric analysis of non-alloyed and low-alloy steels - Determination of manganese, lead, copper, nickel, chromium, molybdenum, vanadium, cobalt and aluminium (total) and tin (Routine method)
  • Aluminum, lead, nickel, silicon and zinc
    • EN 10318 Determination of thickness and chemical composition of zinc and aluminium based metallic coatings - Routine method
  • Carbon, chromium, copper, manganese, nickel, phosphorus, silicon and sulfur
    • CR 10320 Optical emission analysis of low alloy steels (routine method) - Method for determination of carbon, silicon, sulfur, lead, manganese, chromium, nickel and copper
  • carbon and sulfur
    • EN ISO 15350 Steel and iron - Determination of total carbon and sulphur content - Infrared absorption method after combustion in an induction furnace (routine method) (ISO 15350)
  • Chromium, cobalt, copper, manganese, molybdenum, nickel, niobium, phosphorus, silicon, titanium and vanadium
    • EN 10315 Routine method for the analysis of high alloy steel by X-ray fluorescence spectrometry (XRF) using a close-range technique
  • Chromium, copper, manganese, molybdenum, nickel, phosphorus, silicon and tin
    • EN 10355 Chemical analysis of ferrous materials - Inductively coupled plasma optical emission spectrometric analysis of non-alloyed and low-alloy steels - Determination of silicon, manganese, lead, copper, nickel, chromium, molybdenum and tin after dissolution with nitric and sulphuric acids (routine method)

Additionally, this standard includes the application range for single-element methods and multi-element methods and the principles of these methods.

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