ISO/TS 4949:2016 PDF

Steel names based on letter symbols

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Title (English):

ISO/TS 4949:2016

Steel names based on letter symbols

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 9
Publication date:: October 27, 2016
Edition:: ISO TS 4949 edition 2 version 1
ICS:: 77.080.20

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Description (English):

ISO/TS 4949:2016 specifies rules for the designation of internationally standardized steel grades by means of symbolic letters and numbers to express application and principal characteristics (e.g. mechanical, physical, chemical) so as to provide an abbreviated identification of steel grades. NOTE 1 In order to avoid ambiguity, the principal symbols established according to this document can be supplemented by additional symbols identifying additional characteristics of the steel or steel product, e.g. suitability for use at high or low temperatures, surface condition, treatment condition, deoxidation. NOTE 2 These rules can also be applied to nationally or regionally standardized steels.

Technical details

Technical committee: ISO/TC 17 - Steel
SKU: ISO/TS 4949:2016

Abstract

Overview

ISO/TS 4949:2016 is an international Technical Specification that defines rules for abbreviated steel names based on letter symbols. It provides a consistent system to designate steel grades by combining letters and numbers that express application and principal characteristics (mechanical, physical, chemical). The document ensures a unique, unambiguous steel name for each standardized steel grade and can be applied internationally or at national/regional levels.

Key Topics

Unique steel names: one distinct designation per steel; symbols written without spaces.
Groups of designation:
- Group 1 - steels designated by application and mechanical/physical properties (e.g., S = structural, P = pressure, L = linepipe, E = engineering). Numbers indicate specified minimum yield or tensile strength (MPa) or other relevant metrics.
- Group 2 - steels designated by chemical composition, subdivided into:
  - Sub-group 2.1: Non-alloy steels (C prefix) - carbon indicated as 100 × %C.
  - Sub-group 2.2: Non-alloy/alloy steels with minor alloying (

Related standards

Other ISO standards

Overview

Key Topics

Unique steel names: one distinct designation per steel; symbols written without spaces.
Groups of designation:
- Group 1 - steels designated by application and mechanical/physical properties (e.g., S = structural, P = pressure, L = linepipe, E = engineering). Numbers indicate specified minimum yield or tensile strength (MPa) or other relevant metrics.
- Group 2 - steels designated by chemical composition, subdivided into:
  - Sub-group 2.1: Non-alloy steels (C prefix) - carbon indicated as 100 × %C.
  - Sub-group 2.2: Non-alloy/alloy steels with minor alloying (

ISO/TS 4949:2016 PDF

Technical details

Abstract

Overview

Key Topics

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Abstract

Overview

Key Topics

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