ISO 14341-2020 PDF

Full title and description

Welding consumables — Wire electrodes and weld deposits for gas shielded metal arc welding of non-alloy and fine-grain steels — Classification (ISO 14341:2020, Edition 3). This International Standard defines the classification, designation and marking of wire electrodes and corresponding all-weld metal when used for gas-shielded metal arc welding (GMAW) of unalloyed and fine-grain steels.

Abstract

ISO 14341:2020 specifies requirements for classification of wire electrodes and weld deposits in the as-welded and post-weld heat-treated conditions for gas shielded metal arc welding of non-alloy and fine-grain steels. The standard provides two combined classification systems: one based on yield strength with a 47 J impact-energy requirement and one based on tensile strength with a 27 J impact-energy requirement. It defines designation elements (product/process symbol, strength/elongation, impact-property symbol and temperature, shielding gas symbol, chemical-composition symbol) and sets test and reporting rules for mechanical and impact properties of all-weld metal.

General information

• Status: Published
• Publication date: 21 August 2020
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 25.160.20 (Welding consumables)
• Edition / version: Edition 3 (2020)
• Number of pages: 14

Scope

ISO 14341:2020 covers classification of wire electrodes and the corresponding weld deposits produced by gas-shielded metal arc welding of non-alloy and fine-grain steels with a minimum yield strength up to 500 MPa or a minimum tensile strength up to 570 MPa. The document applies to designation of the electrode and all-weld metal properties in both the as-welded and post-weld heat-treated (PWHT) conditions, and it allows a single wire electrode to be classified for use with different shielding gases (symbols follow ISO 14175). Two alternative classification systems are provided (yield-strength + 47 J impact and tensile-strength + 27 J impact) with associated test procedures and acceptance criteria.

Key topics and requirements

• Classification systems: yield-strength based (47 J impact) and tensile-strength based (27 J impact) with separate clause/tables for each system.
• Designation structure: product/process symbol (G), strength/elongation symbol, impact-property symbol (test temperature), shielding gas symbol (per ISO 14175) and chemical-composition symbol.
• Impact-test rules: 3-specimen regime for 47 J system (limits on individual values) and 5-specimen regime for 27 J system (discard highest & lowest, average of remaining meet requirement).
• Mechanical test and welding procedure conditions: defined preheat/interpass, deposition sequence, and PWHT conditions to ensure reproducible all-weld metal results.
• Chemical-composition classification tables for wire electrodes and allowable elemental limits for designated groups.
• Requirements for marking, labelling, retest, rounding rules and technical delivery conditions to support procurement and conformity assessment.

Typical use and users

This standard is used by welding-consumable manufacturers for product classification and labelling; welding engineers and QA/QC teams for selecting filler metals that meet specified strength and toughness; fabricators and structural steel manufacturers for specifying consumables that deliver required all-weld metal properties; and procurement/specification writers to reference an internationally recognized consumable designation in contracts and drawings. It supports interchangeability of filler metals between suppliers and consistent testing protocols.

Related standards

ISO 14341 is linked to other welding consumable and welding procedure standards, notably ISO 14175 (shielding gases designation), related ISO classification standards for other electrode types (for example ISO 2560 for coated electrodes and ISO 17633 for tubular cored electrodes), and is published as EN ISO/BS EN ISO variants in European/UK catalogs. It is developed under ISO/TC 44/SC 3 (welding consumables).

Keywords

welding consumables, wire electrodes, GMAW, gas metal arc welding, all-weld metal, classification, impact energy, yield strength, tensile strength, shielding gas, ISO 14175, PWHT

FAQ

Q: What is this standard?

A: ISO 14341:2020 is an international standard that defines the classification and designation of wire electrodes and weld deposits used for gas-shielded metal arc welding of non-alloy and fine-grain steels. It is Edition 3 published in August 2020.

Q: What does it cover?

A: It covers how to classify and mark wire electrodes and all-weld metal based on mechanical properties (yield or tensile strength), impact performance (47 J or 27 J systems), chemical composition, and the shielding gas used. It also specifies test methods, acceptance criteria and delivery/marking rules.

Q: Who typically uses it?

A: Consumable manufacturers, welding engineers, fabricators, inspection/QA teams and procurement/specification writers use ISO 14341 to ensure filler metals meet required weld-metal properties and to provide consistent product designations for procurement and certification.

Q: Is it current or superseded?

A: ISO 14341:2020 (Edition 3) is the current published edition as of its 2020 publication; it replaced the 2010 edition. Standards are subject to periodic review by ISO (typically every five years). Check with the publisher for the most recent status before use.

Q: Is it part of a series?

A: It forms part of the family of ISO welding consumable classification standards produced under ISO/TC 44/SC 3 and is related to complementary standards (for example ISO 14175 for shielding gases, ISO 2560, ISO 17633 and regional/adopted versions such as EN ISO 14341).

Q: What are the key keywords?

A: Key keywords include: wire electrode, GMAW, gas-shielded metal arc welding, classification, all-weld metal, impact energy, yield strength, tensile strength, shielding gas, chemical composition, PWHT.