ISO 24598-2019 PDF

Full title and description

Welding consumables — Solid wire electrodes, tubular cored electrodes and electrode-flux combinations for submerged arc welding of creep‑resisting steels — Classification (ISO 24598:2019). This document defines a classification system for SAW consumables used with creep‑resisting and low‑alloy elevated‑temperature steels, covering solid wire electrodes, tubular cored electrodes and electrode/flux combinations and giving designation rules for chemistry and mechanical properties.

Abstract

ISO 24598:2019 specifies requirements for the classification of solid wire electrodes, tubular cored electrodes and electrode/flux combinations for submerged arc welding of creep‑resisting steels. It provides two complementary classification routes — one based principally on chemical composition and the other based on tensile strength combined with chemical composition — and includes rules for testing, designation symbols, and delivery/conformity provisions.

General information

• Status: Published
• Publication date: April 2019
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 25.160.20
• Edition / version: Edition 3 (2019-04)
• Number of pages: 18

Scope

Specifies a classification system and designation rules for solid wire electrodes, tubular cored electrodes and electrode/flux combinations intended for submerged arc welding (SAW) of creep‑resisting and low‑alloy elevated‑temperature steels. The standard covers how products are tested and classified (by chemistry or by tensile strength plus chemistry), permitted combinations of electrode and flux, requirements for mechanical and chemical testing used for classification, and rules for marking and documentation.

Key topics and requirements

• Two classification systems: System A (chemical‑composition based) and System B (tensile‑strength plus chemical composition based).
• Designation symbols and standardized notation for electrode type, tensile properties, impact properties (where applicable), flux type and chemical composition.
• Requirements for chemical analyses and mechanical tests (tensile testing, permitted rounding and reporting rules; impact testing where specified).
• Welding procedure and test conditions relevant to classification (preheat, interpass, PWHT and cooling requirements for test deposits).
• Delivery, conformity, retest rules and examples of product designation to ensure traceability and consistent specification.

Typical use and users

Used when specifying or procuring submerged arc welding consumables for components operating at elevated temperatures — for example boiler and steam‑plant components, pressure vessels and petrochemical equipment. Typical users include welding engineers, consumable manufacturers and formulators, QA/QC and inspection personnel, procurement specialists and standards committees.

Related standards

ISO 24598:2019 supersedes ISO 24598:2012 and is published as EN ISO 24598:2019 in CEN member countries. It sits alongside other welding consumable and welding procedure standards and is commonly referenced by national adoptions and industry procurement specifications.

Keywords

welding consumables, submerged arc welding, SAW, solid wire electrode, tubular cored electrode, electrode‑flux combination, creep‑resisting steels, classification, tensile properties, chemical composition

FAQ

Q: What is this standard?

A: ISO 24598:2019 is an international standard that defines a classification system and designation rules for consumables used in submerged arc welding of creep‑resisting and low‑alloy elevated‑temperature steels.

Q: What does it cover?

A: It covers classification routes (by chemical composition or by tensile strength plus chemistry), symbols and designation, required chemical and mechanical tests for classification, relevant welding test conditions, and delivery/conformity rules.

Q: Who typically uses it?

A: Welding engineers, consumable manufacturers and suppliers, QA/QC and inspection personnel, procurement teams in heavy industry, and standards bodies that reference welding consumable classifications.

Q: Is it current or superseded?

A: ISO 24598:2019 is the current published edition (published April 2019) and supersedes the 2012 edition.

Q: Is it part of a series?

A: It is part of ISO’s welding‑consumable family of standards maintained by ISO/TC 44 (Welding and allied processes) and is often adopted/endorsed as regional or national standards (for example EN ISO versions).

Q: What are the key keywords?

A: Submerged arc welding, welding consumables, solid wire, cored wire, electrode‑flux combination, creep‑resisting steels, classification, tensile strength, chemical composition.