Kovové materiály

Komise : CEN/TC 190 (Foundry technology)
Původce: CEN
K připomínkám do: 14.05.2018
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This document defines grades and the corresponding requirements for malleable cast irons.

This document specifies five grades of whiteheart malleable cast iron and nine grades of blackheart malleable cast iron, based on mechanical properties measured on cast samples (which are test pieces).

This document specifies Brinell hardness values determined only when these values are requested by the purchaser.

This document does not cover technical delivery conditions for malleable cast iron castings. Reference should be made to EN 1559‑1 [3] and EN 1559‑3 [4].

This document does not cover chemical composition, except phosphorus (see Clause 6).

Oblast zaměření: Mechanické zkoušení kovů
Komise : ECISS/TC 101 (est methods for steel (other than chemical analysis))
Původce: CEN
K připomínkám do: 27.05.2018
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This International Standard specifies a method for determining the ability of metallic materials to undergo plastic deformation in bending.

This International Standard applies to test pieces taken from metallic products, as specified in the relevant product standard. It is not applicable to certain materials or products, for example tubes in full section or welded joints, for which other standards exist.

Oblast zaměření: Svařování
Komise : CEN/TC 121 (Welding)
Původce: CEN
K připomínkám do: 28.05.2018
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This document defines welding positions for testing and production, for butt and fillet welds, in all product forms.

Annex A gives examples of the limits of the slope of a weld axis and the rotation of the weld face about the weld axis for welding positions in production welds.

Annex B gives a comparison of International, European and US designations for welding positions.

Oblast zaměření: Kovové koroze
Komise : CEN/TC 262 (Metallic and other inorganic coatings)
Původce: CEN
K připomínkám do: 2.06.2018
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This document gives guidelines for determining the average surface density over a measured area of anodic oxide or of a coating deposited autocatalytically, mechanically, by chemical conversion, by electrodeposition, by hot dip galvanizing and by chemical or physical vapour deposition using gravimetric and other chemical analysis procedures that have attained some degree of national or international standardization.

A variety of procedures are described and include:

—    gravimetric procedures for chemical or electrochemical dissolution of the coating or the substrate to determine the coating surface density;

—    gravimetric procedures for weighing the uncoated substrate and the coated (finished) specimen to determine the coating surface density;

—    analytical procedures that utilize dissolution of the coating for determination of the coating surface density by instrumental chemical analysis methods.

With the exception of the gravimetric method described in ISO 3892 this document does not give the measurement uncertainties of the methods cited.

Oblast zaměření: Prášková metalurgie
Komise : CEN/SS M11 (Powder metallurgy)
Původce: CEN
K připomínkám do: 3.06.2018
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This International Standard relates to the sampling and testing of sintered hardmetals for determination of their physical and mechanical characteristics.

Oblast zaměření: Prášková metalurgie
Komise : CEN/SS M11 (Powder metallurgy)
Původce: CEN
K připomínkám do: 3.06.2018
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This International Standard relates to the sampling and testing of powder mixtures for the manufacture of hardmetals, using sintered test pieces, and to the preparation of test pieces.