Kovové materiály

Oblast zaměření: Prášková metalurgie
Komise : CEN/SS M11 (Powder metallurgy)
Původce: CEN
K připomínkám do: 20.07.2019
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This International Standard specifies a method of determining the particle size distribution of metallic powders by dry sieving into size fractions.

The method is applicable to dry, unlubricated metallic powders, but not applicable to powders in which the morphology differs markedly from being equiaxial, for example flake-type powders.

The method is not applicable to metallic powders having a particle size wholly or mostly under 44 µm.

Oblast zaměření: Mechanické zkoušení kovů
Komise : CEN/TC 459/SC 1 (Test methods for steel (other than chemical analysis))
Původce: CEN
K připomínkám do: 21.07.2019
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This part of ISO 12004 specifies the testing conditions to be used when constructing a forming-limit curve (FLC) at ambient temperature and using linear strain paths. The material considered is flat, metallic and of thickness between 0,3 mm and 4 mm.

NOTE          The limitation in thickness of up to 4 mm is proposed, giving a maximum allowable thickness to the punch diameter ratio.

For steel sheet, a maximum thickness of 2,5 mm is recommended.

Oblast zaměření: Mechanické zkoušení kovů
Komise : CEN/TC 459/SC 1 (Test methods for steel (other than chemical analysis))
Původce: CEN
K připomínkám do: 21.07.2019
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This part of ISO 12004 provides guidelines for developing forming-limit diagrams and forming-limit curves for metal sheets and strips of thicknesses from 0,3 mm to 4 mm.

Oblast zaměření: Prášková metalurgie
Komise : CEN/SS M11 (Powder metallurgy)
Původce: CEN
K připomínkám do: 23.07.2019
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This International Standard specifies a method for determining the flow rate of metallic powders, including powders for hardmetals and mixes of metallic powders and organic additives such as lubricants, by means of a calibrated funnel (Gustavsson flowmeter).

The method is applicable only to powders which flow freely through the specified test orifice.

Oblast zaměření: Ocel
Komise : CEN/TC 459/SC 4 (Concrete reinforcing and prestressing steels)
Původce: CEN
K připomínkám do: 29.07.2019
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This document specifies the specific requirements for adherent protected and sheathed strands (type A).

The general requirements for protected and sheathed high strength steel strands are given in prEN 10369‑1.

Oblast zaměření: Ocel
Komise : CEN/TC 459/SC 4 (Concrete reinforcing and prestressing steels)
Původce: CEN
K připomínkám do: 29.07.2019
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This document specifies product characteristic, test/assessment method and the way of expressing test results, for stainless steel as defined in EN 10088‑1 and designated as in EN 10088‑1 for the use of the reinforcement of concrete.

It applies to stainless steel products with ribbed or indented surfaces, which are in the form of:

—    bars and coils (rod, wire);

—    sheets of factory-made machine-welded fabric;

—    lattice girders and hybrid lattice girders composed by stainless steel and by weldable reinforcing steel according to EN 10080.

This document does not apply to:

—    pre-stressed stainless steels;

—    indented strip;

—    stainless steel tube filled with carbon steel swarf, which is then hot or cold reduced;

—    stainless steel smooth bar with weld material deposited on it;

—    galvanized reinforcing steel;

—    epoxy-coated reinforcing steel.

Oblast zaměření: Mechanické zkoušení kovů
Komise : CEN/TC 459/SC 1 (Test methods for steel (other than chemical analysis))
Původce: CEN
K připomínkám do: 29.07.2019
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This document specifies the Small Punch method of testing metallic materials and the estimation of tensile, creep and fracture mechanical material properties from cryogenic up to high temperatures.

Oblast zaměření: Ocel
Komise : CEN/TC 459/SC 4 (Concrete reinforcing and prestressing steels)
Původce: CEN
K připomínkám do: 29.07.2019
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This document specifies the specific requirements for sliding protected and sheathed strands (type S).

The general requirements for protected and sheathed high strength steel strands are given in prEN 10369‑1.

Oblast zaměření: Ocel
Komise : CEN/TC 459/SC 4 (Concrete reinforcing and prestressing steels)
Původce: CEN
K připomínkám do: 29.07.2019
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This document specifies the requirements for uncoated high strength steel strands or zinc or zinc alloy coated high strength steel strands, encapsulated with a protection product and a sheath[1]).

The intended use of these products is mainly the prestressing of concrete.

NOTE          These products can also be used in other stress applications in the construction field (e.g. stay cables for bridges) where the protection of the products is not removed in use.

The standard applies only to products as supplied by the producer.

 

[1]) The word "sheath" used in the present document does not cover the sheaths as stated in mandate M/115 and specified in EN 523.

Oblast zaměření: Kovové koroze
Komise : CEN/TC 262 (Metallic and other inorganic coatings, including for corrosion protection and corrosion testing of metals and alloys)
Původce: CEN
K připomínkám do: 5.08.2019
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This document provides guidance on the selection of procedures that can be used in the identification and examination of corrosion pits and in the evaluation of pitting corrosion and pit growth rate.

Oblast zaměření: Měď
Komise : CEN/TC 133 (Copper and copper alloys)
Původce: CEN
K připomínkám do: 5.08.2019
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This document contains definitions, thread dimension, reference data (minimum bore), supporting information (assembling instructions) and describes the test methods referenced by other parts of the EN 1254 series.

Thread dimensions comprise: wall thickness at threaded portions of fittings, dimensions of tail pipe ends for swivel fittings, dimensions of gas union connectors, thread dimensions and thread profile.

Test methods comprise: leak tightness under internal hydrostatic pressure, leak tightness under internal pneumatic pressure, resistance of joints to static flexural strength, resistance to pull out of joints, leak tightness of joints under vacuum, the resistance of joints to temperature cycling, resistance of joints with metallic tube to vibration, integrity of fabricated fitting bodies or having an 'as cast' microstructure, resistance to stress corrosion, detection of a carbon film on the surface of copper fittings, determination of mean depth of dezincification, resistance of joints to pressure cycling, disconnection and re-use, determining if the diameter and/or the length of engagement of a capillary end is/are within the specified tolerance, determining the minimum length of engagement of an integral solder or brazing ring socket having a formed groove.

Oblast zaměření: Měď
Komise : CEN/TC 133 (Copper and copper alloys)
Původce: CEN
K připomínkám do: 5.08.2019
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This document specifies product characteristics, assessment methods, compliance criteria and a designation system for push-fit fittings for the purpose of joining tubes of copper, plated copper, multilayer pipes and plastics pipes. The fitting ends have a size range from 6 mm to 54 mm. The fittings are designed for a service lifetime up to fifty years.

This document is applicable to push-fit fittings for joining one or more of the following tubes or pipes:

—    copper tubes to EN 1057; copper composite according to UNI 11342, plastic and multilayer pipes covered by EN 15015.

The fittings are used up to the operating temperatures and maximum operating pressures as indicated in Annex A.

This document applies to copper alloy fittings. A non-exhaustive list of these copper alloys is given in CEN/TS 13388.

Adaptor fittings may combine push-fit ends with fitting ends defined in the other parts of EN 1254.

Push-fit fittings for metallic tubes may also have flanged end connections according to EN 1092‑3.

Push-fit fittings may also have a plated or other decorative surface coating.

Fittings can be produced by machining, metal forming, casting, or fabrication.

Products covered by this standard are intended to be used in liquid applications:

—    hot, cold or combined hot and cold water systems according to EN 806;

—    closed heating systems according to EN 12828 and cooling systems;

—    drainage systems;

—    sprinkler systems according to EN 12845.

Oblast zaměření: Kovové povlaky
Komise : CEN/TC 240 (Thermal spraying and thermally sprayed coatings)
Původce: CEN
K připomínkám do: 5.08.2019
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This document specifies the procedure for the determination of coating strength, and hence of cohesive strength in a tubular coating tensile test.

The test is intended to determine the tensile coating strength parallel to the spray layers (normal to the spray direction) and to identify differences in particle bond quality.

The tubular coating tensile test is suitable for sprayed coatings deposited using metallic materials (not carbides and ceramics).

The tubular coating tensile test is not suitable for fused sprayed coatings deposited using self-fluxing alloys.

The test supports quality assurance and is intended to be applied for the purpose of coating optimization by identifying the influences of coating parameters and spray materials on the coatings's quality. Furthermore, the coating in particular for cold sprayed coatings can be compared with the characteristics of similar solid materials and the coating's quality can be assessed.

This test is not recommended for thin coatings (coating thickness < 500 µm), since massive scattering of results is to be expected here. Due to the size of the specimens, it is particularly suitable to apply the tubular coating tensile test for coating processes that use a concentrated spray jet and a highly focused spray spot, as in the case of cold spraying, high velocity flame spraying (HVOF) or plasma spraying. Applying the tubular coating tensile test for coating processes that use a broad spray jet, such as flame spraying and arc spraying, may require special spraying measures, e.g. the use of a template to ensure a nearly vertical impingement angle.

Oblast zaměření: Měď
Komise : CEN/TC 133 (Copper and copper alloys)
Původce: CEN
K připomínkám do: 5.08.2019
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This document specifies product characteristics, assessment methods, compliance criteria and a designation system for threaded fittings. These threaded ends exist with metallic and with non-metallic sealing elements for the purposes of joining with tubes, pipes, fittings or valves, the threaded ends have a size range from 3,175 mm (1/8”) to 101,6 mm (4”). The threaded fittings are designed for a service lifetime up to fifty years.

The fittings are used up to the operating temperatures and maximum operating pressures as indicated in Annex A.

This document applies to copper alloy fittings. A non-exhaustive list of these copper alloys is given in CEN/TS 13388.

Threaded fittings may also have flanged end connections according to EN 1092‑3.

Threaded fittings may also have a plated or other decorative surface coating.

Fittings can be produced by machining, metal forming, casting, or fabrication.

Products covered by this document are intended to be used in:

a)    liquid applications:

—    hot, cold or combined hot and cold water systems according to EN 806;

—    closed heating systems according to EN 12828 and cooling systems;

—    drainage systems;

—    sprinkler systems according to EN 12845.

b)   gas applications:

—    natural gas and liquefied petroleum gas systems with a maximum operating pressure less than or equal to 5 bar according to EN 1775;

—    compressed air systems.

Oblast zaměření: Měď
Komise : CEN/TC 133 (Copper and copper alloys)
Původce: CEN
K připomínkám do: 5.08.2019
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This document specifies product characteristics, assessment methods, compliance criteria of the test results and a designation system for fittings with ends for capillary soldering or capillary brazing for connecting with copper tubes e.g. EN 1057, EN 13348, EN 13349, EN 12735‑1, EN 12735‑2 etc. For the purposes of joining copper tubes, the fitting ends have a size range from 6 mm to 108 mm. These fitting ends exist in three forms: end feed fittings and integral solder and integral brazing ring fitting ends. The fittings are designed for a service lifetime up to fifty years.

The fittings are used up to the operating temperatures and corresponding maximum operating pressures as indicated in Annex A.

This document applies to copper alloy fittings. A non-exhaustive list of these copper alloys is given in CEN/TS 13388.

The capillary fittings for soldering or brazing to copper tubes are used with solder alloys in accordance with alloys specified in EN ISO 9453 and brazing alloys in accordance with alloys specified in EN ISO 17672.

Adaptor fittings for use with copper tubes may combine capillary soldering or capillary brazing ends with fitting ends defined in the other parts of EN 1254.

Capillary fittings for soldering or brazing may also have flanged end connections according to EN 1092‑3.

Capillary fittings for soldering or brazing may also have a plated or other decorative surface coating.

Fittings can be produced by machining, metal forming, casting or fabrication.

Products covered by this standard are intended to be used in:

a)    liquid applications:

—  hot, cold or combined hot and cold water systems according to EN 806;

—  closed heating systems according to EN 12828 and cooling systems;

—  drainage systems;

—  sprinkler systems according to EN 12845;

—  refrigeration systems;

b)   gas applications:

—  natural gas and liquefied petroleum gas systems with a maximum operating pressure less than or equal to 5 bar according to EN 1775;

—  compressed air systems;

—  medical gas systems according to EN ISO 7396;

—  refrigeration systems.

Oblast zaměření: Měď
Komise : CEN/TC 133 (Copper and copper alloys)
Původce: CEN
K připomínkám do: 5.08.2019
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This document specifies product characteristics, assessment methods, compliance criteria of test results and a designation system for fittings with compression ends for use with plastic and multilayer pipes which are defined in the applicable pipe standard. For the purposes of joining plastics pipes, the fitting ends have a size range from 10 mm to 160 mm. The fittings are designed for a service lifetime up to fifty years.

The compression fittings are used up to the operating temperatures and maximum operating pressures as indicated in Annex A.

This document applies to copper alloy fittings. A non-exhaustive list of these copper alloys is given in CEN/TS 13388.

Adaptor fittings for use with plastic and multilayer pipes may combine compression ends with fitting ends defined in the other parts of EN 1254.

Compression fittings for use with plastic and multilayer pipes may also have flanged end connections according to EN 1092‑3.

Compression fittings for use with plastic and multilayer pipes may also have a plated or other decorative surface coating.

Fittings can be produced by machining, metal forming, casting, or fabrication.

Products covered by this standard are intended to be used in:

a)     liquid applications:

—    Hot, cold or combined hot and cold water systems according to EN 806;

—    closed heating systems according to EN 12828 and cooling systems;

—    drainage systems;

—    sprinkler systems according to EN 12845.

b)    gas applications (not valid for multilayer pipes):

—    natural gas and liquefied petroleum gas systems with a maximum operating pressure less than or equal to 5 bar according to EN 1775;

—    compressed air systems.

Oblast zaměření: Měď
Komise : CEN/TC 133 (Copper and copper alloys)
Původce: CEN
K připomínkám do: 5.08.2019
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This document specifies product characteristics, assessment methods, compliance criteria and a designation system for fittings with radial and axial press ends for use with plastics and multilayer pipes. The fitting ends have a size range from 10 mm to 160 mm. The fittings are designed for a service lifetime up to fifty.

This document applies to copper alloy fittings. A non-exhaustive list of these copper alloys is given in CEN/TS 13388.

Adaptor fittings for use with plastic and multilayer pipes may combine press ends with fitting ends defined in the other parts of EN 1254.

Press fittings for use with plastic and multilayer pipes may also have flanged end connections according to EN 1092‑3.

Press fittings for use with plastic and multilayer pipes may also have a plated or other decorative surface coating.

Fittings can be produced by machining, metal forming, casting, or fabrication.

Products covered by this standard are intended to be used in:

a)    liquid applications:

—    hot, cold or combined hot and cold water systems according to EN 806;

—    closed heating systems according to EN 12828 and cooling systems;

—    drainage systems;

—    sprinkler systems according to EN 12845;

b)   gas applications:

—    natural gas and liquefied petroleum gas systems with a maximum operating pressure less than or equal to 5 bar according to EN 1775;

—    compressed air systems.

Oblast zaměření: Měď
Komise : CEN/TC 133 (Copper and copper alloys)
Původce: CEN
K připomínkám do: 5.08.2019
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This document specifies product characteristics, assessment methods, compliance criteria and a designation system for capillary fittings with short ends for brazing to copper tubes e.g. EN 1057, EN 13348, EN 13349, EN 12735‑1, EN 12735‑2, etc. These fitting ends exist in two forms: end feed fittings and integral brazing ring fittings. For the purposes of joining copper tubes, the fitting ends have a size range from 14,7 mm to 159 mm. The fittings are designed for a service lifetime up to fifty years.

The fittings are used up to the operating temperatures and maximum operating pressures as indicated in Annex A.

This document applies to copper alloy fittings. A non-exhaustive list of these copper alloys is given in CEN/TS 13388.

The capillary fittings with short ends for brazing to copper tubes are used with brazing alloys in accordance with alloys specified in EN ISO 17672.

Not all copper alloys that can be used to manufacture fittings can be brazed and those that can be brazed may require different brazing techniques (guidance is provided in in prEN1254–20:2019, Annex A).

Fittings with short ends for capillary brazing may also have threaded end connections. These threaded ends exist with metallic and with non-metallic sealing elements. For the purposes of joining with tubes, pipes, fittings or valves, the threaded ends have a size range from 1/8” to 4”.

Adaptor fittings for use with copper tubes may combine short ends for capillary brazing with fitting ends defined in the other parts of EN 1254.

Capillary fittings with short ends for brazing may also have flanged end connections according to EN 1092‑3.

Fittings can be produced by machining, metal forming, casting, or fabrication.

Products covered by this standard are intended to be used in:

a)    liquid applications:

—    hot, cold or combined hot and cold water systems according to EN 806;

—    closed heating systems according to EN 12828 and cooling systems;

—    drainage systems;

—    sprinkler systems according to EN 12845;

—    refrigeration systems.

b)   gas applications:

—    natural gas and liquefied petroleum gas systems with a maximum operating pressure less than or equal to 5 bar according to EN 1775;

—    compressed air systems;

—    medical gas systems according to EN ISO 7396;

—    refrigeration systems.

Oblast zaměření: Měď
Komise : CEN/TC 133 (Copper and copper alloys)
Původce: CEN
K připomínkám do: 5.08.2019
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This document specifies product characteristics, assessment methods, compliance criteria and a designation system for press fittings including their elastomeric seals, for connecting with metallic tubes. The fitting ends have a size range from 6 mm to 108 mm. The press fittings are designed for a service lifetime up to fifty years.

This document is applicable to press fittings for joining one or more of the following tubes:

—    copper tubes to EN 1057 and

—    stainless steel tubes to EN 10312

with wall thicknesses and tempers as specified by the manufacturer.

The fittings are used up to the operating temperatures and maximum operating pressures as indicated in Annex A.

Press fittings are used with tubes with wall thicknesses greater than or equal to the wall thickness given in Annex B, to ensure that tubes can withstand the radial pressing forces involved.

This document applies to copper alloy fittings. A non-exhaustive list of these copper alloys is given in CEN/TS 13388.

Adaptor fittings for use with copper tubes may combine press ends with fitting ends defined in the other parts of EN 1254.

Press fittings for use with metallic tubes may also have flanged end connections according to EN 1092‑3.

Press fittings for use with metallic tubes may also have a plated or other decorative surface coating.

Fittings can be produced by machining, metal forming, casting, or fabrication.

Products covered by this standard are intended to be used in:

a)    liquid applications:

—    hot or cold or combined hot and cold water systems according to EN 806;

—    closed heating systems according to EN 12828 and cooling systems;

—    drainage systems;

—    sprinkler systems according to EN 12845.

b)   gas applications:

—    natural gas and liquefied petroleum gas systems with a maximum operating pressure less than or equal to 5 bar according to EN 1775;

—    compressed air systems.

Oblast zaměření: Měď
Komise : CEN/TC 133 (Copper and copper alloys)
Původce: CEN
K připomínkám do: 5.08.2019
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This document specifies product characteristics, assessment methods, compliance criteria of the test results and a designation system for compression fittings for connecting with copper tubes. Compression fittings exist with sealing elements - metallic and/or non-metallic - called non manipulative (commonly referenced as type A) and without sealing elements, called manipulative (commonly referenced as type B). For the purposes of joining copper tubes, the fitting ends have a size range from 6 mm to 108 mm. The compression fittings are designed for a service lifetime up to fifty years.

The fittings are used up to the operating temperatures and maximum operating pressures as indicated in Annex A.

This document applies to copper alloy fittings. A non-exhaustive list of these copper alloys is given in CEN/TS 13388.

Compression fitting ends, Type A, are used with copper tubes to EN 1057 in all material hardness conditions.

Compression fittings, Type A, will possibly require an internal support when used with R220 (annealed) copper tube and the manufacturer’s advice should be sought.

Compression fitting ends, Type B, are used with R220 (annealed) or R250 (half-hard) copper tube to EN 1057.

Compression fittings, Type B, may be used with R290 (hard) copper tube and the manufacturer’s advice should be sought.

Adaptor fittings for use with copper tubes may combine compression ends with fitting ends defined in the other parts of EN 1254.

Compression fittings for use with copper tubes may also have flanged end connections according to EN 1092‑3.

Compression fittings for use with copper tubes may also have a plated or other decorative surface coating.

Fittings can be produced by machining, metal forming, casting, or fabrication.

Products covered by this standard are intended to be used in:

a)    liquid applications:

—    hot, cold or combined hot and cold water systems according to EN 806;

—    closed heating systems according to EN 12828 and cooling systems;

—    drainage systems;

—    sprinkler systems according to EN 12845.

b)   gas applications:

—    natural gas and liquefied petroleum gas systems with a maximum operating pressure less than or equal to 5 bar according to EN 1775;

—    compressed air systems.