ASTM D4819-13(2021)e1 PDF

Overview

ASTM D4819-13(2021)e1 is the ASTM International standard specification for flexible cellular materials made from polyolefin plastics and blends of polyolefin plastics. This standard defines the requirements for two types of flexible, closed-cell polyolefin foams: crosslinked (Type I) and non-crosslinked (Type II). By providing clear guidelines on classification, properties, and methods of testing, ASTM D4819 supports manufacturers, suppliers, and users in ensuring product quality, performance, and compliance.

Flexible closed-cell polyolefin foams covered by this standard are widely used in a range of applications due to their desired combination of thermal, mechanical, and chemical resistance properties. This specification is recognized internationally and developed in accordance with World Trade Organization principles for standardization.

Key Topics

• Scope and Classification

  • Applies to cellular materials manufactured from polyolefin plastics (at least 51% polyolefin by mass) and blends thereof, with or without crosslinking.
  • Two types:
    • Type I: Closed-cell, crosslinked (chemical or radiation).
    • Type II: Closed-cell, non-crosslinked.

• Property Requirements

  • Foam properties designated by suffix letters (e.g., compression set, tensile strength, water absorption, flammability resistance, density).
  • Each property has minimum or maximum limits and correlating test methods (e.g., ASTM D3575 for various physical tests).
  • Special requirements can be negotiated between purchaser and supplier.

• Testing and Inspection

  • Primary reference to ASTM D3575 test methods.
  • Allows for alternative or special test procedures if standard methods are not applicable.
  • Inspection and testing typically occur at the place of manufacture before shipment.

• Dimensional Tolerances

  • Specifies tolerances for sheets and planks of various thicknesses.
  • Tighter tolerances can be specified by agreement.

• Materials and Manufacture

  • Allows use of any polyolefin resin or blend with appropriate compounding materials.
  • Finished product must be free from defects affecting serviceability.
  • Typically provided in natural color unless color is specified.

• Packaging and Marking

  • Requires proper packaging and clear labeling with material name, manufacturer, and purchaser’s designation.

Applications

Flexible closed-cell polyolefin foams covered by ASTM D4819 serve across many industries because of their balance of cushioning, insulation, and durability. Practical applications include:

• Automotive: Interior trim, gaskets, noise and vibration dampening, and other components requiring flammability or mechanical property compliance.
• Packaging: Protective padding, shock absorption, and dynamic cushioning.
• Sports and Recreation: Impact attenuation surfaces, padding, and buoyancy aids.
• Construction and HVAC: Thermal insulation, soundproofing, and sealing elements.
• Marine and Safety: Flotation devices and components in accordance with buoyancy and water absorption criteria.

The specification’s flexibility in physical properties and test requirements supports tailored use in safety-critical and performance-driven environments.

Related Standards

The following standards are referenced in ASTM D4819 or provide complementary guidelines for testing and performance verification:

• ASTM D3575 - Test Methods for Flexible Cellular Materials Made from Olefin Polymers
• ASTM D412 - Test Methods for Vulcanized Rubber and Thermoplastic Elastomers – Tension
• ASTM D624 - Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers
• ASTM D2863 - Test Method for Measuring the Minimum Oxygen Concentration to Support Candle-Like Combustion of Plastics
• ASTM E96/E96M - Test Methods for Water Vapor Transmission of Materials
• ASTM C518 - Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus
• ASTM D1596 - Test Method for Dynamic Shock Cushioning Characteristics of Packaging Material
• UL 1191 - Standard for Components for Personal Flotation Devices
• FMVSS 302 (49 CFR 571.302) - Flammability of Vehicle Interior Materials

ASTM D4819-13(2021)e1 provides a rigorous framework for specifying and verifying flexible closed-cell polyolefin materials, ensuring quality and consistency for both suppliers and end users in global markets.