ISO 5425-2023 PDF

Full title and description

St ISO 5425-2023 — Specifications for use of poly(lactic acid) based filament in additive manufacturing applications. This International Standard specifies requirements and guidance for the production, marking, testing, packaging, transport and storage of PLA-based filaments intended for use in additive-manufacturing processes (materials-extrusion / filament extrusion processes).

Abstract

ISO 5425:2023 defines technical requirements, test methods and acceptance/detection rules for poly(lactic acid) (PLA) based filament used in specific additive-manufacturing technologies (principally materials-extrusion (MEX) filament). The document also covers marking/labeling, packaging, transportation and storage considerations to help ensure consistent quality and safe handling of PLA filaments.

General information

• Status: Published
• Publication date: August 2023
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 25.030 (Additive manufacturing); 83.080.01 (Plastics — general)
• Edition / version: Edition 1 (2023-08)
• Number of pages: 12

Information above is taken from the ISO bibliographic record for ISO 5425:2023.

Scope

This standard applies to PLA‑based filament intended for use in filament/materials-extrusion additive-manufacturing processes. It specifies the technical characteristics that the filament should meet (dimensional tolerances, material-related limits and mechanical characteristics when relevant), the test methods and criteria for detection/acceptance, and requirements for labelling, packaging, transport and storage to support consistency and traceability in industrial and desktop 3D-printing supply chains.

Key topics and requirements

• Defined technical specifications for PLA filament (appearance, net mass/quantity statements, diameter and ovality tolerances, limits on volatile matter and other material‑related parameters).
• Specified test methods and acceptance/detection rules (sampling and performance checks relevant to filament quality and printability).
• Mechanical-characteristic checks referenced where applicable (e.g., tensile/yield considerations used for batch verification of filament quality).
• Requirements and guidance for marking and labelling (material identification, lot/batch information, recommended print settings where appropriate).
• Packaging, transport and storage instructions to preserve filament physical and chemical integrity (moisture control, protection from contamination and deformation).
• Normative references and conformity considerations to support consistent supplier and purchaser use.

Typical use and users

Primary users are PLA-filament manufacturers and compounders, quality-control and testing laboratories, 3D-printing filament distributors, OEMs and service-bureaus using or procuring PLA filament, and procurement/regulatory professionals who require standardized material descriptions for product specifications and compliance. Designers and advanced hobbyists may also use the standard as a reference for expected filament tolerances and labelling.

Related standards

Standards commonly referenced alongside ISO 5425 include terminology and general additive-manufacturing standards (for example ISO/ASTM 52900 — additive manufacturing fundamentals and vocabulary) and plastics test-method standards used to determine mechanical and material properties (for example parts of the ISO 527 series for tensile testing and ISO 1043 for polymer designation/symbols). These provide complementary definitions and test procedures useful when implementing ISO 5425 in practice.

Keywords

PLA filament, poly(lactic acid), additive manufacturing, 3D printing, materials-extrusion (MEX), filament specifications, filament testing, labelling, packaging, storage, ISO 5425:2023.

FAQ

Q: What is this standard?

A: ISO 5425:2023 is an international standard that gives specifications and guidance for PLA‑based filament used in additive-manufacturing (filament/melt‑extrusion) applications, covering technical requirements, tests, marking and handling.

Q: What does it cover?

A: It covers material and dimensional characteristics for PLA filament, test methods and detection/acceptance rules, plus marking/labeling, packaging, transport and storage requirements to help ensure consistent filament quality and traceability.

Q: Who typically uses it?

A: Filament manufacturers and suppliers, quality and testing laboratories, 3D-printing service providers, OEMs and procurement/specification writers use this standard to define and verify PLA filament quality.

Q: Is it current or superseded?

A: ISO 5425:2023 was published in August 2023 and is the current published edition (Edition 1). Users should check ISO or national standards bodies for any amendments or future revisions.

Q: Is it part of a series?

A: ISO 5425 is a standalone International Standard for PLA filament, but it is intended to be used alongside other AM and plastics standards (for example ISO/ASTM 52900 for AM terminology and relevant ISO plastics test standards) to provide a complete conformity and testing framework.

Q: What are the key keywords?

A: Key keywords are PLA, poly(lactic acid), filament, additive manufacturing, materials extrusion, filament specifications, testing, marking, packaging and storage.