British Standards Institution

Sector: Manufacturing

Overview: Under the direction of ISE/101, is responsible for British Standards and formulating the UK viewpoint to European and International committees in the field of physical and metallographic testing.

Committee standards activity

In Progress (11)

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Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
BS ISO 5949	Tool steels and bearing steels -- Micrographic method for assessing the distribution of carbides using reference photomicrographs Categories: Metal testing. Other \| Steels. Heat-treatable \| Steels. Stainless \| Steels. Tool Comment resolution begins : 2020-01-23	Comment resolution
BS ISO 4967	Steel — Determination of the non-metallic inclusion content — Micrographic method Categories: Metal testing. Other Public comment begins : 2025-02-05	Public comment
BS ISO 3763	Wrought steels -- Macroscopic methods for assessing the content of non-metallic inclusions Categories: Metal testing. Other Comment resolution begins : 2019-12-02	Comment resolution
BS ISO 25369	Steel pipes — Evaluation screening method on materials compatibility in high-pressure hydrogen Categories: Unclassified documents Drafting begins : 2026-04-17	Drafting
BS ISO 21224	Evaluation of centreline segregation of continuously cast slabs Categories: Pipelines. Iron and steel. \| Iron and steel. Castings Approval begins : 2025-12-29	Approval
BS ISO 14250	Steel -- Metallographic characterization of duplex grain size and distributions Categories: Steels Comment resolution begins : 2019-12-02	Comment resolution
BS ISO 14250	Steel — Metallographic characterization of duplex grain size and distributions Categories: Unclassified documents Drafting begins : 2025-10-27	Drafting
BS EN ISO 3651-2	Determination of resistance to intergranular corrosion of stainless steels. Part 2: Ferritic,austenitic and ferritic-austenitic (duplex) stainless steels -- Corrosion test in media containing sulfuric acid Categories: Metal corrosion Comment resolution begins : 2020-05-28	Comment resolution
BS EN ISO 3651-1	Determination of resistance to intergranular corrosion of stainless steels. Part 1: Austenitic and ferritic-austenitic (duplex) stainless steels -- Corrosion test in nitric acid medium by measurement of loss in mass (Huey test) Categories: Metal corrosion Comment resolution begins : 2020-05-28	Comment resolution
BS EN ISO 18203	Steel — Determination of the thickness of surface-hardened layers Categories: Metal testing. Other Approval begins : 2025-12-18	Approval

Published (16)

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Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
PD ISO/TS 5486:2025	Metallographic determination of ferrite in an austenitic matrix of stainless steel. Part 9: Safety aspects related to mechanical and physical properties. Comparison of ISO 8124-1, EN 71-1 and ASTM F963 Categories: Metal testing. Non-destructive \| Steels. Stainless Published standard begins : 2025-10-13	Published standard
PD ISO/TR 20580:2022	Preparation of metallographic specimens Categories: Steels Published standard begins : 2022-08-22	Published standard
BS ISO 9042:2024	Steels. Point counting method for statistically estimating the volume fraction of a constituent with a point grid Categories: Metal testing. Other Published standard begins : 2024-04-17	Published standard
BS ISO 5490:2025	Steel. Rating and classifying nonmetallic inclusions using the scanning electron microscope Categories: Steels Published standard begins : 2025-10-03	Published standard
BS ISO 4968:2022	Steel. Macrographic examination by sulfur print (Baumann method) Categories: Metal testing. Other Published standard begins : 2022-05-23	Published standard
BS ISO 17577:2016	Steel. Ultrasonic testing of steel flat products of thickness equal to or greater than 6 mm Categories: Metal testing. Non-destructive \| Steels. Flat Published standard begins : 2016-01-22	Published standard
BS ISO 16574:2015	Determination of percentage of resolvable pearlite in high carbon steel wire rod Categories: Metal testing. Other Published standard begins : 2015-09-23	Published standard
BS ISO 16573-2:2022	Steel. Measurement method for the evaluation of hydrogen embrittlement resistance of high-strength steels. Slow strain rate test Categories: Metal testing. Other Published standard begins : 2022-03-15	Published standard
BS ISO 16573-1:2020	Steel. Measurement method for the evaluation of hydrogen embrittlement resistance of high strength steels. Constant load test Categories: Metal testing. Other Published standard begins : 2020-08-18	Published standard
BS EN ISO 643:2024	Steels. Micrographic determination of the apparent grain size Categories: Metal testing. Other Published standard begins : 2024-09-06	Published standard

Withdrawn (7)

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Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
BS ISO 18203:2016	Steel. Determination of the thickness of surface-hardened layers Categories: Metal testing. Other Withdrawn begins : 2022-06-10	Withdrawn
BS ISO 16573:2015	Steel. Measurement method for the evaluation of hydrogen embrittlement resistance of high strength steels Categories: Metal testing. Other Withdrawn begins : 2020-08-18	Withdrawn
BS EN ISO 643:2020	Steels. Micrographic determination of the apparent grain size Categories: Metal testing. Other Withdrawn begins : 2020-04-07	Withdrawn
BS EN ISO 643:2012	Steels. Micrographic determination of the apparent grain size Categories: Metal testing. Other Withdrawn begins : 2020-01-23	Withdrawn
BS EN ISO 3887:2018	Steels. Determination of the depth of decarburization Categories: Metal testing. Other \| Steels Withdrawn begins : 2023-10-09	Withdrawn
BS EN 10328:2005	Iron and steel. Determination of the conventional depth and hardening after surface heating Categories: Metal testing. Mechanical Withdrawn begins : 2022-06-13	Withdrawn
BS EN 10247:2007	Micrographic examination of the non-metallic inclusion content of steels using standard pictures Categories: Metal testing. Other Withdrawn begins : 2017-06-01	Withdrawn

Standards Development

ISE/101/7 - Methods of physical and metallographic testing

Committee standards activity