ASTM D788-24 PDF
Name in English:
St ASTM D788-24
Name in Russian:
Ст ASTM D788-24
Original standard ASTM D788-24 in PDF full version. Additional info + preview on request
Full title and description
Standard Classification System for and Basis of Specification for Poly(Methyl Methacrylate) (PMMA) Molding and Extrusion Materials — designation D788-24. This standard defines a classification system (groups, classes and grades) and the basis for specifying PMMA molding and extrusion compounds used where controlled optical, mechanical, or UV-stability characteristics are required.
Abstract
ASTM D788-24 provides a concise classification framework and specification basis for PMMA (acrylic) molding and extrusion materials. It describes compositional requirements, classification categories, and grade distinctions (including UV transmission/stabilization categories) so manufacturers, specifiers, and test laboratories can consistently identify and select PMMA compounds for molding and extrusion applications.
General information
- Status: Active standard (current edition D788-24).
- Publication date: 2024.
- Publisher: ASTM International.
- ICS / categories: 83.140.99 (Other rubber and plastics products / plastics classification systems).
- Edition / version: D788-24 (2024 edition).
- Number of pages: 7 pages (main document length as published).
Scope
This standard establishes a classification system and the basis for specification of poly(methyl methacrylate) (PMMA) molding and extrusion compounds. It applies to PMMA materials in which at least 70% of the polymer is polymerized from methyl methacrylate and classifies materials into groups, classes and grades to capture differences in composition, UV transmission/stabilization, and intended performance for molding and extrusion uses. The classification is intended to support specifications, procurement, quality control, and material selection.
Key topics and requirements
- Definition and scope for PMMA molding and extrusion compounds (composition requirement: ≥70% polymerized from methyl methacrylate).
- Classification structure: groups, classes (1–4), and grades (grade 1–3) to distinguish general-purpose vs. UV-transmitting, UV-stabilized, or UV-absorbing materials.
- Basis of specification: how to reference composition, optical/UV characteristics, and intended processing form (molding vs. extrusion).
- Intended use categories addressing optical transmission, color/UV stability, and resistance to color change under exposure.
- Guidance for manufacturers and specifiers to ensure consistent identification and procurement of PMMA compounds.
Typical use and users
Used by polymer and compound manufacturers, materials engineers, OEMs, product designers, specification writers, procurement teams, test laboratories, and certification bodies. Typical applications include optical components, glazing, signage, display panels, and extrusion/molding processes where controlled optical properties and UV performance are important.
Related standards
Commonly referenced companion ASTM standards for testing and specification of PMMA and plastics include test methods and specifications for optical properties, mechanical properties and durability such as ASTM D1003 (haze and luminous transmittance), ASTM D570 (water absorption), ASTM D638 (tensile properties of plastics), ASTM D256 (impact resistance), and ASTM D790 (flexural properties). D788-24 is published under the ASTM plastics committee framework and complements these material test methods and specifications.
Keywords
ASTM D788-24, PMMA, polymethyl methacrylate, acrylic, acrylics, classification system, molding materials, extrusion materials, UV stabilization, optical transmission, grades, material specification.
FAQ
Q: What is this standard?
A: ASTM D788-24 is a classification system and basis for specification for poly(methyl methacrylate) (PMMA) molding and extrusion materials, providing groups, classes and grades to aid material identification and procurement.
Q: What does it cover?
A: It covers the classification and specification basis for PMMA compounds (at least 70% polymerized from methyl methacrylate), including distinctions for UV transmission, UV stabilization/absorption, and intended molding or extrusion use. It is not a test method but a framework to reference material characteristics.
Q: Who typically uses it?
A: Material producers, compounders, product designers, specifiers, procurement professionals, test laboratories and compliance/certification organizations use D788-24 when specifying or verifying acrylic materials for optical, outdoor, or UV-sensitive applications.
Q: Is it current or superseded?
A: D788-24 is the current edition published in 2024; it replaces the earlier D788-16 edition (and includes the redline/changes compared to the prior edition).
Q: Is it part of a series?
A: It is maintained under ASTM’s plastics committee structure (Committee D20 and subcommittees addressing plastics and polymer classifications) and complements ASTM test methods and specifications for plastic materials.
Q: What are the key keywords?
A: PMMA, acrylic, polymethyl methacrylate, classification, grades, molding, extrusion, UV stabilization, optical transmission, ASTM D788-24.