Metallurgi

Ämnesområden: Koppar och kopparlegeringar
Kommittébeteckning: SIS/TK 132 (Koppar)
Källa: CEN
Svarsdatum: den 21 apr 2019
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This document specifies a method for the estimation of the average grain size of copper and copper alloy products by ultrasound. This document can be applied for seamless round tubes as well as for flat products.

This method can be used in place of test methods according to EN ISO 2624, mentioned in the relevant product standards. As reference method and in case of doubt the intercept procedure or planimetric procedure will be used.

Kommittébeteckning: SIS/TK 132 (Koppar)
Källa: CEN
Svarsdatum: den 21 apr 2019
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This document specifies a procedure for the eddy current test with an encircling test coil for measuring defects on the outer surface of seamless round copper and copper alloy tubes.

NOTE  The eddy current test method(s) required, together with the size range and acceptance level, are defined in the relevant product standard.

The choice of the method for eddy current test:

— with an encircling test coil on the outer surface according to prEN 1971-1;

or

— with an internal probe on the inner surface according to prEN 1971-2;

is at the discretion of the manufacturer if there are no other agreements between the purchaser and the supplier.

Kommittébeteckning: SIS/TK 132 (Koppar)
Källa: CEN
Svarsdatum: den 21 apr 2019
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This document specifies a procedure for the eddy current test with an internal probe for measuring defects on the inner surface of seamless round copper and copper alloy tubes.

This document applies particularly for finned tubes with high fins according to EN 12452.

NOTE The eddy current test method(s) required, together with the size range and acceptance level, are defined in the relevant product standard.

The choice of the method for eddy current test:

— with an encircling test coil on the outer surface according to prEN 1971-1

or

— with an internal probe on the inner surface according to prEN 1971-2

is at the discretion of the manufacturer if there are no other agreements between the purchaser and the supplier.

Especially for finned tubes according to EN 12452 with high fins, it is suggested to use eddy current test with internal probe as described in this document.

Kommittébeteckning: SIS/TK 130 (Gjutet järn och stål)
Källa: CEN
Svarsdatum: den 5 maj 2019
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This part of ISO 945 specifies a method of classifying the microstructure of graphite in cast irons by comparative visual analysis.

The purpose of this part of ISO 945 is to provide information about the method of graphite classification. It is not intended to give information on the suitability of cast-iron types and grades for any particular application.

The particular material grades are specified mainly by mechanical properties and, in the case of austenitic and abrasion resistant cast irons, by their chemical composition. The interpretation of graphite form and size does not allow a statistically valid statement on the fulfilment of the requirements specified in the relevant material standard.

Kommittébeteckning: SIS/TK 135 (Rostfria stål)
Källa: CEN
Svarsdatum: den 5 maj 2019
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This Part of EN 10217 specifies the technical delivery conditions in two test categories for welded tubes of circular cross-section made of austenitic and austenitic-ferritic stainless steel which are intended for pressure and corrosion resisting purposes at room temperature, at low temperatures or at elevated temperatures.

NOTE Once this document is published in the Official Journal of the European Union (OJEU) under Directive 2014/68/EU, pressure equipment directive, presumption of conformity to the Essential Safety Requirements (ESR) of Directive 2014/68/EU is limited to technical data of materials in this standard and does not presume adequacy of the material to a specific item of equipment. Consequently, the assessment of the technical data stated in this material standard against the design requirements of this specific item of equipment to verify that the ESRs of the Pressure Equipment Directive are satisfied, needs to be done by the designer or manufacturer of the pressure equipment, taking also into account the subsequent manufacturing processes which may affect properties of the base materials.

Ämnesområden: Verktygsstål
Kommittébeteckning: SIS/TK 120 (Allmänna leveransbestämmelser för metall)
Källa: ISO
Svarsdatum: den 20 maj 2019
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This international standard provides guidance on the classification of the grades of steel included in the product standards of and addressed by TC17 and it subcommittees. These grades may include but are not limited to non-alloy and alloy steels.

NOTE 1 This standard does not intend to give any commercial information including tariff, residual elements specification, and academic definitions for educational purposes.

NOTE 2 The terms, special and quality steels are nowadays outdated. Nevertheless, they are used in standards and the market. And therefore they can be found in Annex A.

Ämnesområden: Pulvermetallurgi
Kommittébeteckning: SIS/TK 133 (Pulvermetallurgi)
Källa: CEN
Svarsdatum: den 7 jun 2019
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This International Standard specifies a method of measuring the air permeability and the porosity of a

packed bed of metal powder, and of deriving therefrom the value of the envelope-specific surface area.

The permeability is determined under steady-state flow conditions, using a laminar flow of air at a

pressure near atmospheric. This International Standard does not include the measurement of

permeability by a constant volume method.

Several different methods have been proposed for this determination, and several instruments are

available commercially. They give similar, reproducible results, provided the general instructions given

in this International Standard are respected and the test parameters are identical.

This International Standard does not specify a particular commercial apparatus and corresponding test

procedure. However, for the convenience of the user, an informative annex has been included (annex A)

which is intended to give some practical information on three specific methods:

— the Lea and Nurse method, involving an apparatus which can be built in a laboratory (see A.1);

— the Zhang Ruifu method, using similar equipment (see A.2);

— the Gooden and Smith method, involving an apparatus which can be built in a laboratory but for

which a commercial apparatus also exists. (Two types of commercial apparatus exist; one of these is no

longer available for purchase, but is still being used - see A.3.).

These methods are given as examples only. Other equipment available in various countries is acceptable

within the scope of this International Standard.

This testing method is applicable to all metallic powders, including powders for hardmetals, up to 1 000

μm in diameter, but it is generally used for particles having diameters between 0,2 μm and 50 75 μm. It

should not be used for powders composed of particles whose shape is far from equiaxial, i.e. flakes or

fibres, unless specifically agreed upon between the parties concerned.

This testing method is not applicable to mixtures of different metallic powders or powders containing

binders or lubricant.

If the powder contains agglomerates, the measured surface area may be affected by the degree of agglomeration.

If the powder is subjected to a de-agglomeration treatment (see annex B), the method used

shall be agreed upon between the parties concerned.

Kommittébeteckning: SIS/TK 222 (Lyftredskap)
Källa: CEN
Svarsdatum: den 10 jun 2019
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This document specifies the minimum requirements for the molten metal and resin socketing of steel wire ropes within the scopes of EN 12385-4:2002+A1:2008, EN 12385-5:2002, EN 12385-6:2004, EN 12385-7:2002, EN 12385-8:2002, EN 12385-9:2002 and EN 12385-10:2003+A1:2008.

The document is applicable only to those requirements that ensure that the socketing is strong enough to withstand a force of at least 100 % of the minimum breaking force of the rope (i.e. socket termination efficiency factor KT = 1,0).

NOTE Rope terminations made by socketing in accordance with this document can be used for determining the breaking force of wire ropes in accordance with EN 12385-1:2002+A1:2008, Annex A.

Socketing by the methods and materials described in this standard are for use within the temperature limits given in normative Annex E.

This document deals with all significant hazards, hazardous situations and events relevant to metal and resin socket terminations, when they are used as intended and under conditions of misuse which are reasonably foreseeable (see Clause 4).