ISO 3581-2023 PDF
Name in English:
St ISO 3581-2023
Name in Russian:
Ст ISO 3581-2023
Original standard ISO 3581-2023 in PDF full version. Additional info + preview on request
Full title and description
Welding consumables — Covered electrodes for manual metal arc welding of stainless and heat-resisting steels — Classification. This ISO standard defines the classification systems, identification and key properties for covered electrodes used for manual metal arc (MMA) welding of stainless and heat-resisting steels, including requirements based on weld-metal chemical composition, electrode covering type and mechanical properties.
Abstract
ISO 3581:2023 specifies classification requirements for covered electrodes for manual metal arc welding of stainless and heat-resisting steels. It is a combined standard that provides two classification systems: classification according to nominal composition (ISO 3581‑A) and classification according to alloy type (ISO 3581‑B). The document also addresses mechanical properties of all‑weld metal (as‑welded or heat‑treated) and includes informative guidance on considerations such as weld‑metal ferrite content.
General information
- Status: Published (active)
- Publication date: August 2023 (4th edition)
- Publisher: International Organization for Standardization (ISO)
- ICS / categories: 25.160.20 (Welding consumables)
- Edition / version: 4 (2023)
- Number of pages: 29
Scope
Specifies the classification of covered electrodes for manual metal arc welding of stainless and heat-resisting steels. The scope covers classification methods based on all‑weld metal composition and on alloy type, identification rules, and applicable requirements for electrode covering and weld‑metal mechanical properties in as‑welded or heat‑treated conditions. The standard applies to products classified under either or both classification systems (ISO 3581‑A and ISO 3581‑B) and includes annexes with guidance on aspects such as ferrite content of weld metal.
Key topics and requirements
- Two classification systems: nominal composition (ISO 3581‑A) and alloy type (ISO 3581‑B).
- Identification/coding rules for covered electrodes based on deposited weld‑metal chemistry and covering type.
- Requirements and limits for all‑weld metal chemical composition (elements and tolerances).
- Requirements for mechanical properties of weld metal (tensile, impact where applicable) in as‑welded or heat‑treated conditions.
- Requirements for electrode covering types and related marking information.
- Test, rounding and retesting procedures for chemical analysis and property verification.
- Informative guidance on weld‑metal ferrite content and other metallurgical considerations (Annex B).
Typical use and users
Reference for manufacturers of covered electrodes, welding engineers, fabricators and contractors who specify or procure welding consumables, quality and inspection bodies, design engineers working with stainless and heat‑resisting steels, and standards committees. Used when selecting electrodes for manual metal arc welding to ensure correct classification, traceability and conformity with specified chemical and mechanical requirements.
Related standards
Companion and related classification standards for welding consumables include the ISO series addressing wire, strip and rod electrodes for stainless and heat‑resisting steels (for example ISO 14343 and other ISO/TC 44/SC 3 publications). National and regional adoptions (EN/ISO or national identifications) may also exist for ISO 3581:2023. These related documents cover complementary consumable types and procurement/test requirements for stainless/heat‑resisting welding consumables.
Keywords
welding consumables; covered electrodes; manual metal arc (MMA); stainless steels; heat‑resisting steels; electrode classification; all‑weld metal composition; electrode covering; ferrite content; ISO 3581
FAQ
Q: What is this standard?
A: ISO 3581:2023 is an International Standard that defines classification and identification criteria for covered electrodes used in manual metal arc welding of stainless and heat‑resisting steels.
Q: What does it cover?
A: It covers classification systems (by nominal composition and by alloy type), rules for marking/identification, requirements for all‑weld metal chemical composition and mechanical properties, and related test and verification procedures; it also includes guidance on weld‑metal ferrite content.
Q: Who typically uses it?
A: Electrode manufacturers, welding engineers, fabricators, procurement/specification writers, testing and certification bodies, and standards professionals involved with stainless and heat‑resisting steel welding.
Q: Is it current or superseded?
A: It is the current (published) edition as of 2023 and supersedes the previous edition (ISO 3581:2016).
Q: Is it part of a series?
A: Yes — ISO 3581 sits within the family of ISO standards on welding consumables (ISO/TC 44/SC 3). Related classification standards for other consumable forms (wire, strip, rods) include ISO 14343 and other ISO documents that together cover the main consumable types used for stainless and heat‑resisting steels.
Q: What are the key keywords?
A: Covered electrodes, manual metal arc (MMA), classification, stainless steel, heat‑resisting steel, welding consumables, all‑weld metal composition, electrode covering, ferrite.