Metallurgi

Kommittébeteckning: SIS/TK 123 (Mekanisk provning)
Källa: CEN
Svarsdatum: den 20 dec 2017
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This document specifies the calibration and verification of tension/compression testing machines.

The verification consists of:

— a general inspection of the testing machine, including its accessories for the force application;

— a calibration of the force-measuring system of the testing machine;

— a confirmation that the performance properties of the testing machine achieve the limits given for a specified class.

NOTE This document addresses the static calibration and verification of the force-measuring systems. The calibration values are not necessarily valid for high-speed or dynamic testing applications. Further information regarding dynamic effects is given in the Bibliography.

CAUTION — Some of the tests specified in this document involve the use of processes which can lead to a hazardous situation.

Ämnesområden: Korrosion
Kommittébeteckning: SIS/TK 146 (Korrosion)
Källa: CEN
Svarsdatum: den 20 dec 2017
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This part of ISO 7539 covers procedures for designing, preparing and using precracked specimens for investigating susceptibility to stress corrosion. It gives recommendations for the design, preparation and use of precracked specimens for investigating susceptibility to stress corrosion. Recommendations concerning notched specimens are given in Annex A.

The term "metal" as used in this part of ISO 7539 includes alloys.

Kommittébeteckning: SIS/TK 123 (Mekanisk provning)
Källa: CEN
Svarsdatum: den 27 dec 2017
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This document specifies methods for testing metallic sheet materials to determine the stress-strain characteristics at high strain rates. This document covers the use of elastic-bar-type systems.

The strain-rate range between 10−3 and 103 s−1 is considered to be the most relevant to vehicle crash events based on experimental and numerical calculations such as the finite element analysis (FEA) work for crashworthiness.

In order to evaluate the crashworthiness of a vehicle with accuracy, reliable stress-strain characterization of metallic materials at strain rates higher than 10−3 s−1 is essential.

This test method covers the strain-rate range above 102 s−1.

NOTE 1 At strain rates lower than 10−1 s−1, a quasi-static tensile testing machine that is specified in ISO 7500-1 and ISO 6892-1 can be applied.

NOTE 2 This testing method is also applicable to tensile test-piece geometries other than the flat test pieces considered here.

Kommittébeteckning: SIS/TK 120 (Allmänna leveransbestämmelser för metall)
Källa: CEN
Svarsdatum: den 8 jan 2018
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This document defines important terms used in the heat treatment of ferrous materials.NOTE The term ferrous materials include products and workpieces of steel and cast iron.Annex A provides an alphabetical list of terms defined in this document, as well as their equivalents in French, German, Chinese and Japanese.Table 1 shows the various ironcarbon (FeC) phases.

Kommittébeteckning: SIS/TK 129 (Lättmetaller)
Källa: CEN
Svarsdatum: den 10 jan 2018
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This document specifies a method for checking the continuity of thin anodic oxidation coatings on aluminium and its alloys by a copper sulfate contact test.

The use of this method is limited to anodic oxidation coatings of thickness less than 5 μm, or coatings that have been deformed which includes those produced by coil anodizing techniques.

NOTE The method described enables a rapid check to be made for the continuity of a thin coating of aluminium oxidation on aluminium and its alloys. In cases of doubt regarding a visible fault on the surface of a coating, the use of this method makes it possible to verify whether the fault corresponds to a local gap in the coating which exposes bare metal.

Kommittébeteckning: SIS/TK 129 (Lättmetaller)
Källa: CEN
Svarsdatum: den 10 jan 2018
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This document specifies test methods for the determination of the electric breakdown potential of anodic oxidation coatings on aluminium and its alloys, on flat or near-flat surfaces and on round wire. The methods are applicable to anodic oxidation coatings used primarily as electrical insulators.

The methods are not applicable to coatings in the vicinity of cut edges, the edges of holes, or sharp changes of angle on, for example, extruded shapes.

NOTE 1 The methods described do not give satisfactory results for unsealed coatings.

NOTE 2 Electric breakdown potential is affected by relative humidity.

Kommittébeteckning: SIS/TK 129 (Lättmetaller)
Källa: CEN
Svarsdatum: den 10 jan 2018
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This document specifies an empirical method for assessing the resistance of anodic oxidation coatings to cracking by deformation.

The method is applicable particularly to sheet material with anodic oxidation coatings of thickness less than 5 μm, and is useful for development purposes.

NOTE If the test specimen is thick, even more than 5 μm of coating can be measured (see Clause 9).

Kommittébeteckning: SIS/TK 129 (Lättmetaller)
Källa: CEN
Svarsdatum: den 10 jan 2018
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This document specifies a comparative method for the determination of the fastness of coloured anodic oxidation coatings to ultraviolet (UV) light and heat.

The method is not suitable for testing coloured anodic oxidation coatings that are heat sensitive.

NOTE Dark-coloured test specimens will normally reach the highest temperatures.

Kommittébeteckning: SIS/TK 129 (Lättmetaller)
Källa: CEN
Svarsdatum: den 10 jan 2018
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This document specifies a chart rating system based on standard charts that provides a means of defining levels of performance of anodic oxidation coatings on aluminium and its alloys that have been subjected to corrosion tests.

This rating system is applicable to pitting corrosion resulting from

— accelerated tests,

— exposure to corrosive environments, and

— practical service tests.

This document takes into account only pitting corrosion resulting from penetration of the protective anodic oxidation coating.

NOTE ISO 8994[1] describes a similar rating system based on defined grids.

Kommittébeteckning: SIS/TK 118 (Rörledningsprodukter och ventiler)
Källa: CEN
Svarsdatum: den 18 jan 2018
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This draft European Standard specifies the technical delivery requirements for seamless and welded butt-welding fittings (elbows, concentric and eccentric reducers, equal and reducing tees, caps) made of carbon and alloy steel in two test-categories which are intended for pressure purposes at room temperature, at low temperature or at elevated temperatures, and for the transmission and distribution of fluids and gases.

It specifies:

a) type of fittings;

1) type A: Butt-welding fittings with reduced pressure factor;

2) type B: Butt-welding fittings for use at full service pressure;

b) steel grades and their chemical compositions;

c) mechanical properties;

d) dimensions and tolerances;

e) requirements for inspection and testing;

f) inspection documents;

g) marking;

h) protection and packaging.

NOTE In the case of a harmonised supporting standard for materials, presumption of conformity to the ESRs is limited to technical data of materials in the standard and does not presume adequacy of the material to a specific item of equipment. Consequently it is essential that the technical data stated in the material standard be assessed against the design requirements of this specific item of equipment to verify that the ESRs of the PED are satisfied.

Kommittébeteckning: SIS/TK 118 (Rörledningsprodukter och ventiler)
Källa: CEN
Svarsdatum: den 18 jan 2018
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This draft European Standard specifies the technical delivery requirements for seamless and welded butt-welding fittings (elbows, concentric and eccentric reducers, equal and reducing tees, caps) made of austenitic and austenitic-ferritic (duplex) stainless steel in two test-categories which are intended for pressure purposes at room temperature, at low temperature or at elevated temperatures, and for the transmission and distribution of fluids and gases.

It specifies:

a) type of fittings;

1) type A: butt-welding fittings with reduced pressure factor;

2) type B: butt-welding fittings for use at full service pressure;

b) steel grades and their chemical compositions;

c) mechanical properties;

d) dimensions and tolerances;

e) requirements for inspection and testing;

f) inspection documents;

g) marking;

h) protection and packaging.

NOTE In the case of a harmonised supporting standard for materials, presumption of conformity to the ESRs is limited to technical data of materials in the standard and does not presume adequacy of the material to a specific item of equipment. Consequently it is essential that the technical data stated in the material standard be assessed against the design requirements of this specific item of equipment to verify that the ESRs of the PED are satisfied.

Kommittébeteckning: SIS/TK 123 (Mekanisk provning)
Källa: CEN
Svarsdatum: den 7 feb 2018
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This document specifies a method of tensile testing of metallic materials at temperatures higher than room temperature.

Kommittébeteckning: SIS/TK 480 (Gips)
Källa: CEN
Svarsdatum: den 11 feb 2018
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Ämnesområden: Stål för tryckkärl
Kommittébeteckning: SIS/TK 137 (Tryckkärlsstål)
Källa: ISO
Svarsdatum: den 12 feb 2018
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This international standard specifies the characteristics of hot-rolled steel sheet and strip with a thickness up to 12 mm inclusive of the non-alloyed steels listed in table 1 which are intended for welded gas cylinders in accordance with ISO 4706.

Kommittébeteckning: SIS/TK 129 (Lättmetaller)
Källa: CEN
Svarsdatum: den 20 feb 2018
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Ämnesområden: Ytbehandling; Korrosion
Kommittébeteckning: SIS/TK 129 (Lättmetaller)
Källa: CEN
Svarsdatum: den 20 feb 2018
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This document specifies a grid rating system that provides a means of defining levels of performance of anodic oxidation coatings on aluminium and its alloys that have been subjected to corrosion tests.

This rating system is applicable to pitting corrosion resulting from

— accelerated tests,

— exposure to corrosive environments, and

— practical service tests.

This document takes into account only pitting corrosion of the basis metal resulting from penetration of the protective anodic oxidation coating.

NOTE 1 ISO 8993 describes a similar rating system based on defined chart scales.

NOTE 2 The grid rating system is frequently used for rating the results of short-term corrosion tests for relatively thin anodic oxidation coating, such as those used in the automotive industry.

Ämnesområden: Verktygsstål
Kommittébeteckning: SIS/TK 120 (Allmänna leveransbestämmelser för metall)
Källa: ISO
Svarsdatum: den 22 feb 2018
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This International Standard specifies guidelines and requirements for conducting life cycle inventory (LCI) studies of steel products reflecting steel’s unique nature of closed-loop recycling, including

a) functional unit used for LCI calculation of steel products

b) 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 calculation results of steel products

The application of LCI results, including Life Cycle Impact Assessment (LCIA) is outside the scope of this International Standard.