77.080.20 - Steels

This document specifies an order for listing elements within the chemical composition of steels and most other iron-based alloys, excluding foundry irons. NOTE This document has been developed and is used by ISO/TC 17/SC 4, but can also be used by other ISO/TC 17 subcommittees.

EN-ISO 643 specifies a micrographic method of determining apparent ferritic oraustenitic grain size in steels. It describes the methods of revealing grainboundaries and of estimating the mean grain size of specimens with unimodal sizedistribution. Although grains are three-dimensional in shape, the metallographicsectioning plane can cut through a grain at any point from a grain corner, tothe maximum diameter of the grain, thus producing a range of apparent grainsizes on the two-dimensional plane...view more

This document specifies an order for listing elements within the chemical composition of steels and most other iron-based alloys, excluding foundry irons. NOTE This document has been developed and is used by ISO/TC 17/SC 4, but can also be used by other ISO/TC 17 subcommittees.

This document specifies a flame atomic absorption spectrometric method (FAAS) for the determination of calcium content in non-alloy and low alloy steels.
The method is applicable to calcium contents between 0,000 4 % and 0,012 %.
The method can be adapted to higher calcium contents by changing the test portion or the dilution process, provided the criteria in 5.2.2 and 5.2.3 are still met.

This Working Draft specifies an inductively coupled plasma optical emission spectrometric method for the determination of the chromium content (mass fraction) between 5,0 % (m/m) and 27,0 % (m/m) in alloyed steels.
The method doesn't apply to alloyed steels having niobium and/or tungsten contents higher than 0,1 %.

This document specifies a flame atomic absorption spectrometric method (FAAS) for the determination of lead content in non-alloy and low alloy steels.
The method is applicable to lead contents between 0,005 % and 0,5 %.
The method can be adapted to lower or higher lead contents by changing the test portion or the dilution process, provided the criteria in 5.2.2 and 5.2.3 are still met.

This document specifies an inductively coupled plasma optical emission spectrometric method for the determination of the chromium content (mass fraction) between 5,0 % (m/m) and 27,0 % (m/m) in alloyed steels.
The method doesn't apply to alloyed steels having carbon contents higher than 1 % and niobium and/or tungsten contents higher than 0,1 %.

This European Standard applies to welded wrought steel enclosures pressurised with dry air, inert gases, for example sulphur hexafluoride or nitrogen or a mixture of such gases, used in indoor and outdoor installations of high-voltage switchgear and controlgear with rated voltages above 1kV, where the gas is used principally for its dielectric and/or arc-quenching properties with rated voltages.
-   above 1 kV and up to and including 52 kV and with gas-filled compartments with design pressure hig...view more

This document specifies a spectrophotometric method for the determination of nitrogen in steel.
The method is applicable to the determination of nitrogen mass fraction between 0,000 6 % and
0,050 % in low alloy steels and between 0,010 % and 0,050 % in high alloy steels.
The method does not apply to samples containing silicon nitrides or having silicon contents higher
than 0,6 %.

This document specifies a spectrophotometric method for the determination of nitrogen in steel.
The method is applicable to the determination of nitrogen mass fraction between 0,000 6 % and 0,050 % in low alloy steels and between 0,010 % and 0,050 % in high alloy steels.
The method does not apply to samples containing silicon nitrides or having silicon contents higher than 0,6 %.

This document specifies guidelines and requirements for conducting life cycle inventory (LCI) studies of steel products reflecting steel's capacity for closed-loop recycling, including: a) specification of the functional unit used for LCI calculation of steel products; b) definition of the system boundaries used for LCI calculation of steel products; c) evaluation of scrap in LCI calculation of steel products; d) evaluation of co-products in LCI calculation of steel products; e) reporting of LCI...view more

This document specifies a spectrophotometric method for the determination of nitrogen in steel. The method is applicable to the determination of nitrogen mass fraction between 0,000 6 % and 0,050 % in low alloy steels and between 0,010 % and 0,050 % in high alloy steels. The method does not apply to samples containing silicon nitrides or having silicon contents higher than 0,6 %.

ISO 9606-1:2012 specifies the requirements for qualification testing of welders for fusion welding of steels.
It provides a set of technical rules for a systematic qualification test of the welder, and enables such qualifications to be uniformly accepted independently of the type of product, location and examiner or examining body.
When qualifying welders, the emphasis is placed on the welder's ability manually to manipulate the electrode, welding torch or welding blowpipe, thereby producing a...view more

This document defines the decarburization and specifies three methods of measuring the depth of
decarburization of steel products.

This document specifies the approach to be followed when developing procedures for the ultrasonic
testing of the following welds:
— welds in stainless steels;
— welds in nickel-based alloys;
— welds in duplex steels;
— dissimilar metal welds;
— austenitic welds.
The purposes of the testing can be very different, for example:
— for the assessment of quality level (manufacturing);
— for the detection of specific discontinuities induced in service.
Acceptance levels are not included in th...view more

This draft European Standard defines a method of microscopic non-metallic endogenous inclusion assessment using picture charts.
The method does not apply to particles of a length or diameter less than 3,0 µm or a width smaller than 2,0 µm. If defined by a product standard or agreement between the involved parties for certain special products, inclusions with a width below 2,0 µm can be evaluated by length alone.Inclusions with dimensions exceeding the upper limits in Table 2 are evaluated as be...view more

This European Standard is part of a series of standards, details of this series are given in prEN ISO 15607, annex A.
This standard specifies how a preliminary welding procedure specification is qualified by welding procedure tests.
This standard defines the conditions for the execution of welding procedure tests and the range of qualification for welding procedures for all practical welding operations within the range of variables listed in clause 8.
Tests shall be carried out in accordance ...view more

ISO/TS 7705:2017 gives guidelines for specifying Charpy V-notch impact prescriptions in steel specifications.

1.1   This European Standard specifies rules for designating steels by means of symbolic letters and numbers to express application and principal characteristics, e.g. mechanical, physical, chemical, so as to provide an abbreviated identification of steels.
NOTE   In the English language the designations covered by this European Standard are known as “steel names”; in the French language as “designation symbolique”; in the German language as “Kurznamen”.
1.2   This European Standard applies to steel...view more