ISO 10350-2:2020

Overview

ISO 10350-2:2020 specifies how to acquire and present comparable single-point data for long-fibre-reinforced plastics. It covers reinforced thermoplastic and thermosetting materials where reinforcement fibres are either discontinuous with lengths greater than 7.5 mm or continuous (e.g., fabrics, continuous-strand mat, unidirectional). The standard helps ensure material property values reported on plastics data sheets are directly comparable between suppliers and laboratories.

Key topics and requirements

• Scope and purpose: Defines single-value property reporting (or two values when direction/condition matters) to support preliminary material selection and comparison.
• Specimen preparation: Test specimens must be produced from test plates made according to the ISO 1268 series and machined per ISO 2818. Moulding and processing parameters must be recorded with results.
• Conditioning: Specifies preferred conditioning (ISO 291) at (23 ± 2) °C and (50 ± 10) % RH, and requires reporting of dry vs. 50 % RH equilibrium where water content significantly affects properties.
• Anisotropy and axes: For materials with preferred fibre orientation, tests require measurements along the “1” (fibre) and “2” (transverse) specimen axes and reporting as Value 1 and Value 2.
• Test methods and units: Test requirements reference established standards (examples include ISO 527-4/5 for tensile, ISO 14125 for flexural, ISO 179 for Charpy impact, ISO 75-3 for heat deflection, ISO 1183 for density, ISO 11357 for DSC). The specific methods listed in Table 2 of ISO 10350-2 must be used.
• Presentation of results: Results are single-point mean values (or central values where required), accompanied by material identification, matrix and fibre types, fibre mass fraction/form, processing method, and conditioning.

Applications and who uses it

• Material suppliers: Produce standardized material data sheets that enable apples-to-apples comparison across grades and vendors.
• Design and R&D engineers: Use comparable single-point values for preliminary material selection in composite part design where long-fibre reinforcements are used.
• Quality control and testing labs: Apply consistent specimen preparation, conditioning and reporting practices to reduce variability and improve traceability.
• Procurement and specification writers: Reference comparable data when specifying materials for automotive, aerospace, marine, and industrial composite applications.

Related standards

• ISO 10350-1 (unreinforced and filled plastics)
• ISO 1268 series (test plate manufacture)
• ISO 527-4 / ISO 527-5 (tensile test methods for fibre-reinforced composites)
• ISO 14125, ISO 179, ISO 75-3, ISO 1183, ISO 11357, ISO 291 and relevant IEC/ISO electrical and fire test standards referenced within ISO 10350-2.

Keywords: ISO 10350-2:2020, long-fibre-reinforced plastics, single-point data, plastics data sheets, specimen conditioning, anisotropic properties, tensile, flexural, impact, thermal.