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77 Metallurgy
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ISO 148-4:2026
Metallic materials — Charpy pendulum impact test — Part 4: Testing of miniature Charpy-type V-notch test pieces
Scope: This document specifies the pendulum impact test method on miniature Charpy-type V-notch test pieces of metallic materials. This document does not cover instrumented impact testing of miniature Charpy-type V-notch test pieces, which is specified in ISO 14556:2023, Annex D[1].
This document can be applied, by agreement, to other impact testing machines, such as drop-weight towers or high-speed servo-hydraulic machines.
The user should be aware that data obtained from miniature test pieces are not directly comparable to those obtained from full-size standard Charpy V-notch test pieces[2],[3].
This document can be applied, by agreement, to other impact testing machines, such as drop-weight towers or high-speed servo-hydraulic machines.
The user should be aware that data obtained from miniature test pieces are not directly comparable to those obtained from full-size standard Charpy V-notch test pieces[2],[3].
Base documents:
ISO 21055:2026
Corrosion of metals and alloys — Test method for microbiologically influenced corrosion of oil and gas transmission pipelines
Scope: This document specifies a laboratory test method for microbiologically influenced corrosion (MIC) of oil and gas transmission pipelines, including the principle, apparatus, sources of strains, solutions, specimens, sterilization, procedure, results and report.
This document applies to the MIC test of metals and alloys for internal surfaces of oil and gas transmission pipelines.
This document applies to the MIC test of metals and alloys for internal surfaces of oil and gas transmission pipelines.
Base documents:
Replaced standards
Drafts
prEN ISO 12135
Metallic materials - Unified method of test for the determination of quasistatic fracture toughness (ISO 12135:2021, including corrected version 2022-08)
Scope: This document specifies methods for determining fracture toughness in terms of K, δ, J and R-curves for homogeneous metallic materials subjected to quasistatic loading. Specimens are notched, precracked by fatigue and tested under slowly increasing displacement. The fracture toughness is determined for individual specimens at or after the onset of ductile crack extension or at the onset of ductile crack instability or unstable crack extension. In cases where cracks grow in a stable manner under ductile tearing conditions, a resistance curve describing fracture toughness as a function of crack extension is measured. In some cases in the testing of ferritic materials, unstable crack extension can occur by cleavage or ductile crack initiation and growth, interrupted by cleavage extension. The fracture toughness at crack arrest is not covered by this document. Special testing requirements and analysis procedures are necessary when testing weldments, and these are described in ISO 15653 which is complementary to this document.
Statistical variability of the results strongly depends on the fracture type, for instance, fracture toughness associated with cleavage fracture in ferritic steels can show large variation. For applications that require high reliability, a statistical approach can be used to quantify the variability in fracture toughness in the ductile-to-brittle transition region, such as that given in ASTM E1921. However, it is not the purpose of this document to specify the number of tests to be carried out nor how the results of the tests are to be applied or interpreted.
Statistical variability of the results strongly depends on the fracture type, for instance, fracture toughness associated with cleavage fracture in ferritic steels can show large variation. For applications that require high reliability, a statistical approach can be used to quantify the variability in fracture toughness in the ductile-to-brittle transition region, such as that given in ASTM E1921. However, it is not the purpose of this document to specify the number of tests to be carried out nor how the results of the tests are to be applied or interpreted.
Base documents: ISO 12135:2021; prEN ISO 12135
prEN 10382
Metallic materials - Tensile testing - Tensile test on foils and strips of metals with a nominal thickness less than 0,200 mm by using computer-controlled testing machines
Scope: This document specifies a method for tensile testing of test pieces of foil and strip of metals with a nominal thickness less than 0,200 mm by using computer-controlled testing machines.
The used test pieces according to this document are rectangular (parallel sided strips) and are prepared by cutting. This method is used to determine typically the proof strength, Rp0,2, the tensile strength, Rm, the percentage plastic extension at fracture, Ax mm, (using the automatic determination by the machine) or the (plastic) elongation after fracture, Ax mm, (by manual determination).
NOTE 1 The use of a computer-controlled tensile testing machine is important to apply parameters and fulfil several procedures.
NOTE 2 EN ISO 6892 1:2019 Annex B specifies test pieces (shape, dimensions, preparation, determination of the original cross-sectional area) for thin products flats between 0,1 mm and 3 mm thickness. EN ISO 6892 1:2019 Clause B.1 specifies requirements for products of less than 0,5 mm thickness, which can require special precautions.
NOTE 3 This document and EN ISO 6892 1:2019 Annex B both apply to products of thickness between 0,1 mm and 0,2 mm. For further information, see Clause 5.
The used test pieces according to this document are rectangular (parallel sided strips) and are prepared by cutting. This method is used to determine typically the proof strength, Rp0,2, the tensile strength, Rm, the percentage plastic extension at fracture, Ax mm, (using the automatic determination by the machine) or the (plastic) elongation after fracture, Ax mm, (by manual determination).
NOTE 1 The use of a computer-controlled tensile testing machine is important to apply parameters and fulfil several procedures.
NOTE 2 EN ISO 6892 1:2019 Annex B specifies test pieces (shape, dimensions, preparation, determination of the original cross-sectional area) for thin products flats between 0,1 mm and 3 mm thickness. EN ISO 6892 1:2019 Clause B.1 specifies requirements for products of less than 0,5 mm thickness, which can require special precautions.
NOTE 3 This document and EN ISO 6892 1:2019 Annex B both apply to products of thickness between 0,1 mm and 0,2 mm. For further information, see Clause 5.
Base documents: prEN 10382
prEN 10380
Finished non-alloy and alloy steel products for structural use
Scope: The standard shall cover finished products made of carbon steel, steel alloy and cast steel intended to be used as structural elements in construction works, including its use in installations.
Products may be coated, or uncoated.
Products may be weldable, or non-weldable.
Products made of stainless steel are excluded from this product definition.
The standard shall cover: Product group on sections and profiles, product group on plates, sheets, strip and wide flats, product group on bars, rods and wire, product group on hollows and product group on piles and sheet piles.
Products may be coated, or uncoated.
Products may be weldable, or non-weldable.
Products made of stainless steel are excluded from this product definition.
The standard shall cover: Product group on sections and profiles, product group on plates, sheets, strip and wide flats, product group on bars, rods and wire, product group on hollows and product group on piles and sheet piles.
Base documents: prEN 10380
prEN 10210-1
Hot-finished steel structural hollow sections - Part 1: Technical delivery conditions
Scope: This document specifies technical delivery conditions for hot-finished seamless, electric welded and submerged arc welded steel structural hollow sections of circular, square, rectangular or elliptical forms.
It applies to hollow sections formed hot, with or without subsequent heat treatment, or formed cold with subsequent heat treatment above 580 °C to obtain equivalent mechanical properties to those obtained in the hot formed product.
NOTE 1 The requirements for tolerances, dimensions and sectional properties are specified in EN 10210-2.
NOTE 2 The provisions that apply under the Construction Products Regulations (CPR) are specified in EN 10380.
NOTE 3 The attention of users is drawn to the fact that whilst cold formed grades in EN 10219-1 can have equivalent mechanical properties to hot-finished grades in this document the sectional properties of square and rectangular hollow sections in EN 10210-2 and EN 10219-2 are not equivalent.
NOTE 4 A range of material grades is specified in this standard and the user should select the grade most appropriate to the intended use and service conditions. The grades and mechanical properties of the finished hollow sections are generally comparable with those in EN 10025-2, EN 10025-3, EN 10025-4, EN 10025-5 and EN 10025-6.
NOTE 5 The requirements for seamless and welded steel structural hollow sections for use in offshore structures are covered in EN 10225.
NOTE 6 Spiral welded hollow sections must be used with caution in applications involving dynamic behaviour (fatigue stress) as, up to now, there is insufficient data regarding their performance.
It applies to hollow sections formed hot, with or without subsequent heat treatment, or formed cold with subsequent heat treatment above 580 °C to obtain equivalent mechanical properties to those obtained in the hot formed product.
NOTE 1 The requirements for tolerances, dimensions and sectional properties are specified in EN 10210-2.
NOTE 2 The provisions that apply under the Construction Products Regulations (CPR) are specified in EN 10380.
NOTE 3 The attention of users is drawn to the fact that whilst cold formed grades in EN 10219-1 can have equivalent mechanical properties to hot-finished grades in this document the sectional properties of square and rectangular hollow sections in EN 10210-2 and EN 10219-2 are not equivalent.
NOTE 4 A range of material grades is specified in this standard and the user should select the grade most appropriate to the intended use and service conditions. The grades and mechanical properties of the finished hollow sections are generally comparable with those in EN 10025-2, EN 10025-3, EN 10025-4, EN 10025-5 and EN 10025-6.
NOTE 5 The requirements for seamless and welded steel structural hollow sections for use in offshore structures are covered in EN 10225.
NOTE 6 Spiral welded hollow sections must be used with caution in applications involving dynamic behaviour (fatigue stress) as, up to now, there is insufficient data regarding their performance.
Base documents: prEN 10210-1
prEN 10219-1
Cold formed welded steel structural hollow sections - Part 1: Technical delivery conditions
Scope: This document specifies the technical delivery conditions for electric welded and submerged arc welded cold formed structural steel hollow sections of circular, square, rectangular or elliptical forms and applies to structural hollow sections formed cold without subsequent heat treatment other than the heat treatment of the weld line.
NOTE 1 The requirements for tolerances, dimensions and sectional properties in EN 10219-2.
NOTE 2 The provisions that apply under the Construction Products Regulations (CPR) are specified in EN 10380.
NOTE 3 The attention of users is drawn to the fact that whilst cold formed grades in this document can have equivalent mechanical properties to hot-finished grades in EN 10210-1 the sectional properties of square and rectangular hollow sections in EN 10219-2 and EN 10210-2 are not equivalent.
NOTE 4 A range of steel grades is specified in this document and the user should select the grade most appropriate to the intended use and service conditions. The grades and mechanical properties, but not the final supply condition of cold formed hollow sections are generally comparable with those in EN 10025-2, EN 10025-3, EN 10025-4, EN 10025-5, EN 10025-6, EN 10149-2 and EN 10149-3.
NOTE 1 The requirements for tolerances, dimensions and sectional properties in EN 10219-2.
NOTE 2 The provisions that apply under the Construction Products Regulations (CPR) are specified in EN 10380.
NOTE 3 The attention of users is drawn to the fact that whilst cold formed grades in this document can have equivalent mechanical properties to hot-finished grades in EN 10210-1 the sectional properties of square and rectangular hollow sections in EN 10219-2 and EN 10210-2 are not equivalent.
NOTE 4 A range of steel grades is specified in this document and the user should select the grade most appropriate to the intended use and service conditions. The grades and mechanical properties, but not the final supply condition of cold formed hollow sections are generally comparable with those in EN 10025-2, EN 10025-3, EN 10025-4, EN 10025-5, EN 10025-6, EN 10149-2 and EN 10149-3.
Base documents: prEN 10219-1