ISO 14373-2024 PDF

Full title and description

Resistance welding — Procedure for spot welding of uncoated and coated low-carbon steels. This International Standard specifies procedural and quality requirements for resistance spot welding used in the fabrication of assemblies made from uncoated and metallic-coated or weldable non‑metallic‑coated low‑carbon steels.

Abstract

This document sets out requirements for resistance spot welding of assemblies comprising two or three sheets of low‑carbon steel where the maximum single‑sheet thickness is between 0.4 mm and 3.0 mm. It covers welding of sheets of equal or unequal thickness (thickness ratio ≤ 3:1) and applies to a range of equipment including pedestal welders, portable guns, automatic and robotic welding equipment and multi‑spot machines. Guidance on suitable welding equipment and spot‑welding conditions is provided for manufacturing use.

General information

• Status: Published
• Publication date: 22 January 2024 (Edition 3, 2024)
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 25.160.10 — Welding processes
• Edition / version: Edition 3 (2024)
• Number of pages: 14 (ISO published text)

Scope

Specifies requirements for resistance spot welding in fabrication of assemblies of uncoated and metallic‑coated or weldable non‑metallic‑coated low‑carbon steels where assemblies comprise two or three sheets and single‑sheet thickness is in the range 0.4 mm to 3.0 mm. The standard is applicable to sheets of the same or different thickness where the thickness ratio does not exceed 3:1, and addresses welding by pedestal equipment, portable guns, automatic/robotic feeders, multi‑spot and robotic welding machines.

Key topics and requirements

• Applicable materials: uncoated low‑carbon steels and metallic or weldable non‑metallic coated low‑carbon steels.
• Thickness limits: single‑sheet thickness 0.4 mm to 3.0 mm; thickness ratio of component sheets ≤ 3:1; (three‑sheet combinations constrained by total thickness guidance).
• Equipment types covered: pedestal welding equipment, portable welding guns, automatic/robotic feeding equipment, multi‑spot‑welding machines and robotic welding machines.
• Procedural content: requirements for developing and documenting welding procedure specifications (WPS), recommended spot‑welding conditions, electrode selection and electrode force considerations (guidance in informative annexes).
• Quality and testing: guidance and references for procedure qualification and destructive/ nondestructive assessment of spot welds (referenced normative test methods in related standards).

Typical use and users

Used by manufacturers and fabricators that perform resistance spot welding (notably automotive body and component makers, appliance and general sheet‑metal fabricators), welding engineers, process technicians, quality and inspection personnel, equipment and electrode suppliers, and standards/compliance bodies developing WPS and production test regimes. The standard supports both manual and automated/robotic production environments.

Related standards

Normative and commonly referenced standards include ISO 10447 (testing of welds), ISO 15609‑5 (welding procedure specification — resistance welding), ISO 15614‑12 (welding procedure test — spot, seam and projection welding) and ISO 17677‑1 (resistance welding vocabulary). Users should apply these documents alongside ISO 14373 when qualifying procedures and testing spot welds.

Keywords

resistance welding, spot welding, low‑carbon steel, welding procedure specification (WPS), electrode, robotic welding, welding qualification, coated steel, spot‑weld testing

FAQ

Q: What is this standard?

A: ISO 14373:2024 is an International Standard that specifies procedures and guidance for resistance spot welding of uncoated and metallic‑coated or weldable non‑metallic‑coated low‑carbon steels.

Q: What does it cover?

A: It covers procedural requirements, applicable material and thickness ranges (0.4 mm to 3.0 mm single‑sheet), equipment types (pedestal, gun, automatic/robotic, multi‑spot), guidance on electrodes and spot‑welding conditions, and references to test and qualification methods.

Q: Who typically uses it?

A: Welding engineers, process developers, production technicians, quality/inspection teams, equipment and consumable suppliers, and standards/compliance professionals in industries such as automotive, appliances and general sheet‑metal fabrication.

Q: Is it current or superseded?

A: Current — ISO 14373:2024 (Edition 3) is the published, current version and replaces the previous ISO 14373:2015 edition.

Q: Is it part of a series?

A: It is part of the body of ISO standards addressing resistance welding and welding procedure specification and testing; it is used alongside related documents such as ISO 15609‑5, ISO 15614‑12, ISO 10447 and ISO 17677‑1 and falls under ISO/TC 44 (Welding and allied processes), subcommittee SC 6.

Q: What are the key keywords?

A: Resistance welding, spot welding, low‑carbon steel, coated steel, welding procedure, WPS, electrode, robotic welding, welding qualification.