Metallurgi

Ämnesområden: Korrosion
Kommittébeteckning: SIS/TK 146 (Korrosion)
Källa: ISO
Svarsdatum: den 5 jul 2022
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This standard specifies a method for testing the corrosivity of disinfectants against metals and alloys under total immersion situation, including apparatus, reagents and materials, test specimens, precleaning of test specimens, conditioning, procedure, test report, etc.
This standard is applicable to the determination of corrosion of disinfectants to metal materials by total immersion method. Other corrosion test methods are not included in this standard, and this standard does not include the evaluation of corrosion test results.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility for the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Ämnesområden: Stålrör; Vatteninstallationer
Kommittébeteckning: SIS/TK 118 (Rörledningsprodukter och ventiler)
Källa: CEN
Svarsdatum: den 5 jul 2022
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This document specifies the evaluation method of life cycle cost (LCC) and Life cycle assessment (LCA) of ductile iron pipes and fittings used for water applications
Informative annexes are included in this document as a compilation of references, consensual factors, and scenarios with different DI pipelines.
 

Kommittébeteckning: SIS/TK 142 (Konstruktionsstål)
Källa: CEN
Svarsdatum: den 6 jul 2022
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This part of ISO 683 specifies the technical delivery requirements for five groups of wrought ball and roller bearing steels as listed in Table 3, namely
— through-hardening bearing steels (steels with about 1 % C and 1 % to 2 % Cr),
— case-hardening bearing steels,
— induction-hardening bearing steels (unalloyed and alloyed),
— stainless bearing steels, and
— high-temperature bearing steels.
This part of ISO 683 applies to the products and heat-treatment conditions given in Table 1 and the surface conditions given in Table 2.

Kommittébeteckning: SIS/TK 120 (Allmänna leveransbestämmelser för metall)
Källa: ISO
Svarsdatum: den 7 jul 2022
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Kommittébeteckning: SIS/TK 123 (Mekanisk provning)
Källa: ISO
Svarsdatum: den 19 jul 2022
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This document specifies a method for determining the ability of metallic wire of diameter dimension from 0,3 to 10,0 mm inclusive to undergo plastic deformation during reverse torsion. This test is used to detect surface defects, as well as to assess ductility.

Ämnesområden: Gjut- och tackjärn
Kommittébeteckning: SIS/TK 130 (Gjutet järn och stål)
Källa: CEN
Svarsdatum: den 20 jul 2022
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This document defines the grades of grey cast iron and spheroidal graphite cast iron bars, which have been produced by the continuous casting process.
This document specifies the characterizing properties of grey cast iron bars by either:
a) the tensile strength measured on machined test pieces prepared from samples cut from the bars, or
b) the hardness measured on the bars.
If agreed by the manufacturer and the purchaser, the combination of both tensile strength from option a) and hardness from option b) can be specified.
This document specifies the characterizing properties of spheroidal graphite cast iron bars by the tensile strength measured on machined test pieces prepared from samples cut from the bars.
This document specifies 4 grades of grey cast iron and 14 grades of spheroidal graphite cast iron by a classification based on tensile strength and 4 grades of grey cast iron by a classification based on Brinell hardness.
This document specifies also the straightness of the bars.
This document does not cover technical delivery conditions for iron castings (see EN 1559-1:2011 and EN 1559-3:2011).

Ämnesområden: Pulvermetallurgi
Kommittébeteckning: SIS/TK 133 (Pulvermetallurgi)
Källa: CEN
Svarsdatum: den 1 aug 2022
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This document specifies a method for the determination of the relative loss of mass which a metallic powder undergoes when heated in a stream of pure dry hydrogen under specified conditions.
The purpose of this test is to evaluate a chemical powder characteristic which is of importance to the powder metallurgical industry. The test is not intended as a means for the determination of the content of specific elements. (See Annex A and ISO 4491-1.)
The test method is applicable to unalloyed, partially alloyed and completely alloyed powders of the metals listed in table 1 (see 6.1). It is not applicable to lubricated powders or to mixtures of metal powders.
The results can be influenced by the presence of reducible, oxidizable or volatile metals, metalloids or compounds (see Annex A). The results obtained on such powders shall be used with caution and their interpretation shall be subject to agreement between supplier and user.

Kommittébeteckning: SIS/TK 142 (Konstruktionsstål)
Källa: CEN
Svarsdatum: den 9 aug 2022
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This document applies to cold rolled non-coated low carbon steel flat products in rolled widths equal to or over 600 mm and in thicknesses equal to or less than 3 mm, delivered in sheet, wide strip, slit wide strip or cut lengths obtained from slit wide strip or sheet.
It does not apply to cold rolled narrow strip (rolling width < 600 mm) or to cold rolled flat products for which there is a specific standard, in particular the following:
— cold-rolled low carbon steel flat products for cold forming (EN 10130);
— cold-rolled non-oriented electrical steel sheet and strip delivered in fully processed state (EN 10106);
— cold rolled electrical non-alloy and alloy steel sheet and strip delivered in the semi-processed state (EN 10341);
— cold reduced blackplate (EN 10205);
— steel sheet and strip for welded gas cylinders (EN 10120);
— cold-rolled uncoated non-alloy mild steel narrow strip for cold forming (EN 10139);
— cold-rolled structural steels for general purposes;
— cold-rolled flat products made of high yield strength for cold forming (EN 10268).

Kommittébeteckning: SIS/TK 142 (Konstruktionsstål)
Källa: CEN
Svarsdatum: den 9 aug 2022
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This document specifies the requirements for laser welded tailored blanks (LWB) made of steels for all cold or hot forming processes.
This document applies to all steel grades with or without metallic and/or organic coatings, having uniform or different sheet thickness, welded with or without extra material addition.
After the welding process, LWB are further processed to pressed parts by forming operations under the responsibility of the processor.

Ämnesområden: Korrosion
Kommittébeteckning: SIS/TK 146 (Korrosion)
Källa: ISO
Svarsdatum: den 17 aug 2022
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This international standard describes the general procedure of electrochemical measurements such as potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) in high temperature molten salts with the apparatus.