GB/T 39955-2021 (English Version) PDF

Scope: This document specifies the naming rules, technical requirements, test methods, inspection rules, signs, packaging, transportation, storage and quality certificates, supply contracts (or order lists) for nylon 12 and its composite powders for powder bed fusion. This document is applicable to nylon 12 powder for powder bed fusion and glass microbead reinforced nylon 12 composite powder, carbon fiber reinforced nylon 12 composite powder, aluminum powder reinforced nylon 12 composite powder and mineral fiber reinforced nylon 12 composite powder, other nylon 12 Composite powders can refer to this document. Note: The nylon 12 composite powder referred to in this document includes inter-particle composite powder, that is, in the powder state, the composite between particles and particles or between particles and fibers; Prepared powder (single particle is composite powder).

GB/T 39955-2021 Referenced Document

GB/T 1033.1 Plastics.Methods for determining density of non-celluar plastics.Part1:Immersion method,liquid pyknometer method and titration method
GB/T 1040.2 Plastics—Determination of tensile properties—Part 2: Test conditions for moulding and extrusion plastics*， 2022-07-11 Update
GB/T 14234 Surface roughness for plastic parts
GB/T 1634.1 Plastics—Determination of temperature of deflection under load—Part 1:General test method
GB/T 16913 Methods of dust character test
GB/T 1843 Determination of Izod Impact Strength of Plastics
GB/T 19077 Particle size analysis.Laser diffraction methods
GB/T 19466.3 Plastics-Differential scanning calorimetry(DSC)-Part 3:Determination of temperature and enthalpy of melting and crystallization
GB/T 250 Textiles.Tests for colour fastness.Grey scale for assessing change in colour
GB/T 2913 Test for whiteness of plastics
GB/T 35351 Additive manufacturing—Terminology
GB/T 3682.1 Plastics—Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics—Part 1:Standard method
GB/T 9341 Plastic.Determination of flexural properties

2021 GB/T 39955-2021 Additive manufacturing—Materials—Powders of Nylon 12 and its composites for powder bed fusion