ISO 15609-1-2019 PDF

Full title and description

Specification and qualification of welding procedures for metallic materials — Welding procedure specification — Part 1: Arc welding. This International Standard defines the required content and structure of a welding procedure specification (WPS) for arc welding processes and lists the variables that influence welded‑joint quality.

Abstract

ISO 15609-1:2019 specifies the technical content a preliminary WPS (pWPS) or WPS must contain for arc welding processes. It identifies manufacturer and traceability information, parent‑material and joint data, process identification, consumables and parameters, and other variables that affect weld quality. General rules for the ISO 15609 series are given in ISO 15607.

General information

• Status: Published — International Standard (confirmed).
• Publication date: 16 August 2019 (edition 2, 2019‑08).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.160.10 (Welding processes).
• Edition / version: Second edition (2019).
• Number of pages: 7 (ISO PDF edition).

Scope

Specifies mandatory content for welding procedure specifications applicable to arc welding processes. The standard covers information related to the manufacturer and traceability, parent‑material identification and dimensions, joint design and preparation, welding position and technique, consumables, electrical and process parameters, pre/post‑heat treatments, shielding gas, heat input/arc energy and other variables that influence weld quality. ISO 15607 contains general rules and series context.

Key topics and requirements

• Mandatory elements of a WPS: manufacturer identification, traceability and documentation rules.
• Parent‑material data: type, grouping, dimensions and relevant material considerations.
• Welding process identification and classification for arc processes (process numbers and subtypes).
• Joint design, welding position, preparation, backing/gouging and welding technique requirements.
• Welding consumables, shielding gas, electrical parameters, heat input/arc energy and pre‑/interpass/post‑weld heat treatments.
• Use of ranges, supplements and the relationship between a preliminary WPS (pWPS) and its qualification routes.

Typical use and users

Used by welding engineers, procedure writers, quality managers, fabricators, inspection bodies and certification organizations to prepare, document and assess welding procedure specifications for arc welding operations. It is also used as a reference when qualifying procedures and establishing traceability for production welding. Compliance is typically required for safety‑critical and quality‑controlled fabrication industries (e.g., pressure equipment, offshore, pipelines, heavy fabrication).

Related standards

ISO 15609-1 is part of the ISO 15609 series. Closely related documents and standards include ISO 15607 (general rules for specification and qualification of welding procedures), ISO 15610, ISO 15611, ISO 15612, ISO 15613 (procedures and qualification routes), ISO TR 15608 (material grouping) and related normative standards such as ISO 9606 (welder qualification) and ISO 14732 (welding operator competence). EN/adopted versions exist as EN ISO 15609-1:2019.

Keywords

Welding procedure specification (WPS), arc welding, welding procedure, pWPS, weld qualification, ISO 15609, ISO 15607, consumables, joint design, heat input, material grouping, welding parameters.

FAQ

Q: What is this standard?

A: ISO 15609-1:2019 is the part of the ISO 15609 series that defines the required content and structure of welding procedure specifications specifically for arc welding processes.

Q: What does it cover?

A: It covers the technical items a WPS must contain — manufacturer and traceability information, parent‑material data, joint and process details, consumables, electrical and thermal parameters, pre/post‑heat and other variables influencing weld quality — and references ISO 15607 for series‑wide rules.

Q: Who typically uses it?

A: Welding engineers, procedure writers, fabricators, QA/QC and inspection bodies, and certification agencies use the standard to prepare and assess WPS documents and to support procedure qualification activities.

Q: Is it current or superseded?

A: ISO 15609-1:2019 is the current second edition published 16 August 2019. According to ISO records the publication was reviewed and confirmed in 2025, and it replaced the earlier ISO 15609-1:2004 edition.

Q: Is it part of a series?

A: Yes — ISO 15609 is a multi‑part series (examples: Part 1 Arc welding, Part 2 Gas welding, Part 3 Electron beam, Part 4 Laser beam, Part 5 Resistance welding, Part 6 Laser‑arc hybrid/laser cladding depending on the part). ISO 15607 provides the general rules for the series.

Q: What are the key keywords?

A: WPS, arc welding, welding procedure specification, procedure qualification, material grouping, welding parameters, consumables, ISO 15609.