ISO 14526-1:1999

Overview

ISO 14526-1:1999 specifies a standardized designation system for phenolic powder moulding compounds (PF-PMCs). The standard establishes a clear, machine- and human-readable data block system to identify PF-PMCs by their basic polymer (PF), filler/reinforcement type and content, intended processing method, special properties and designatory properties. It applies to PF-PMCs supplied as powders, granules or ground material and is intended to remove ambiguity in material identification - not to provide engineering performance or processing parameters.

Key Topics

• Data block format: A designation consists of an identity block (ISO number) and an individual-item block divided into five data blocks (marking, processing method, properties, further information, optional additional requirements).
• Data block 1 - Marking: Identifies the base polymer (PF) and designatory fillers/reinforcements by code-letters and code-numbers for type, form and nominal mass % (e.g., combinations like PF(WD30+MD20) for wood dust + mineral dust).
• Data block 2 - Processing method: Uses code-letters for intended processing (examples include G = general purpose, M = injection moulding, Q = compression moulding, T = transfer moulding, X = not specified).
• Data block 3 - Properties:
  • Item 1: Special properties by code (e.g., FR = flame resistance, R = containing recycled material, E = electrical properties).
  • Item 2: Designatory property No.1 - impact strength (measured per ISO 179-1).
  • Item 3: Designatory property No.2 - temperature resistance (measured per ISO 75-2).
• Usage rules: Mixtures can be shown using “+” within parentheses; unused blocks can be marked “X”; new code letters/numbers must be approved by ISO/TC 61 subcommittees to avoid conflicts.
• Limitations: ISO 14526-1 does not guarantee identical performance for identically designated materials - testing (ISO 14526-2) and requirement standards (ISO 14526-3) are referenced when performance data are needed.

Applications

• Material suppliers and manufacturers: standardize labelling and datasheets for PF-PMC product lines.
• Design engineers and specifiers: unambiguously specify PF-PMC materials in procurement documents and drawings.
• Procurement and quality assurance: compare incoming materials against specification codes and manage supplier agreements (use data block 5 for bespoke requirements).
• Testing laboratories: interpret designation-related test requirements and link to appropriate test methods in ISO 14526-2.
• Standards committees and product certifiers: maintain consistent coding and approve new designation codes.

Keywords: ISO 14526-1:1999, phenolic powder moulding compounds, PF-PMCs, designation system, data block, filler/reinforcement codes, processing method codes, designatory properties.

Related Standards

• ISO 14526-2 - Preparation of test specimens and determination of properties (test methods)
• ISO 14526-3 - Requirements for selected moulding compounds (general requirements)
• ISO 1043-1 / ISO 1043-2 - Polymer and filler/reinforcement symbols
• ISO 75-2 - Temperature of deflection under load (used for designatory temperature resistance)
• ISO 179-1 - Charpy impact test (used for designatory impact strength)