ASTM E1730-19 PDF

Full title and description

ASTM E1730-19 — Standard Specification for Rigid Foam for Use in Structural Sandwich Panel Cores. This specification defines requirements for rigid, closed‑cell polyurethane and polyisocyanurate foams intended as thermal insulation cores in structural sandwich panels used primarily in shelter and relocatable building construction. It includes material classification, required physical and mechanical property limits, and service/processing temperature criteria.

Abstract

ASTM E1730-19 specifies performance and acceptance requirements for rigid closed‑cell polyurethane and polyisocyanurate foam products used as sandwich‑panel cores. The standard sets limits and test‑based acceptance criteria for density, thermal conductivity, compressive and shear strength, closed‑cell content, dimensional stability, flame/heat response and impact resistance, and it states the temperature exposures the materials must tolerate during processing and service.

General information

• Status: Published 1 July 2019; listed with historical entry and shown as revised/reapproved in 2025 (appears as E1730‑19(2025) in some catalogs). Users should confirm current status with ASTM International before purchase or citation.
• Publication date: 1 July 2019 (original designation E1730‑19).
• Publisher: ASTM International (sold through ASTM/ANSI webstores and authorized standards distributors).
• ICS / categories: Construction materials / Other construction materials — ICS code commonly listed as 91.100.99.
• Edition / version: E1730‑19 (with catalog entries showing a 2025 reapproval/revision notation as E1730‑19(2025)).
• Number of pages: 5 pages (concise specification).

Scope

This specification covers rigid, closed‑cell polyurethane and polyisocyanurate thermal insulation foams intended for sandwich‑panel cores in shelter construction. It addresses service exposures from −25 to 160 °F (−32 to 71 °C), notes painted surface temperatures encountered in the field (up to about 200 °F / 93 °C), and requires materials to withstand typical lamination/processing temperatures (up to about 230 °F / 110 °C). The scope further defines foam morphology and acceptance testing for physical and mechanical properties.

Key topics and requirements

• Material types: closed‑cell polyurethane and polyisocyanurate rigid foams suitable for sandwich panel cores.
• Classification by nominal density / type designations (multiple types for increasing density).
• Required physical properties and acceptance limits: density, thermal conductivity, percent closed cell, linear and volumetric dimensional stability.
• Mechanical requirements: compressive strength, shear strength, and impact resistance criteria for panel core performance.
• Fire/heat performance: flame resistance (extinguish time, burn distance) and guidance for elevated surface temperatures in service.
• Processing/service temperature limits: capability to withstand lamination/processing temperatures (≈230 °F / 110 °C) and defined ambient service ranges.

Typical use and users

Used by panel manufacturers, specifiers and designers of relocatable shelters, refrigerated or insulated enclosures, architects and engineers specifying sandwich‑panel construction, test laboratories performing acceptance testing, and procurement/compliance teams ensuring material conformance to panel core requirements. Typical applications include shelter systems, portable buildings, and insulated structural panels where thermal insulation and core mechanical performance are required.

Related standards

Previous and related documents include earlier editions of the same designation (for example E1730‑15, E1730‑09) and other ASTM test methods and specifications commonly referenced for sandwich panels and insulation (for example ASTM methods for thermal conductivity and core shear testing). Check the ASTM record and the document's referenced‑standards section for the definitive list.

Keywords

rigid foam, polyurethane foam, polyisocyanurate, sandwich panel core, thermal insulation, shelter construction, compressive strength, shear strength, closed‑cell, dimensional stability, impact resistance.

FAQ

Q: What is this standard?

A: ASTM E1730‑19 is a concise performance specification that sets material classification and acceptance criteria for rigid, closed‑cell polyurethane and polyisocyanurate foams used as structural sandwich‑panel cores.

Q: What does it cover?

A: It covers allowable material types, required physical and mechanical property limits (density, thermal conductivity, compressive and shear strength, percent closed cell, dimensional stability), flame/heat response and impact resistance, and service/processing temperature guidance for shelter‑type sandwich panels.

Q: Who typically uses it?

A: Panel manufacturers, quality/control laboratories, specifiers, architects and engineers involved with insulated sandwich panels and relocatable shelter systems. Procurement and compliance staff also use it to verify supplier conformance.

Q: Is it current or superseded?

A: The original publication date is 1 July 2019 (E1730‑19). Catalog entries and the ANSI/ASTM store show a 2025 reapproval/revision notation (E1730‑19(2025)) and the document appears in some vendor listings as a historical/revised item. Because status labels and reapproval/supersession records can vary between distributors, always confirm the current official status and the most recent revision directly with ASTM International before relying on or citing the standard. (Checked sources as of Feb 21, 2026.)

Q: Is it part of a series?

A: It is a standalone ASTM specification with prior editions (for example E1730‑15, E1730‑09). Related ASTM test methods and specifications for thermal insulation and sandwich‑panel testing are typically referenced in the standard’s referenced‑documents section.

Q: What are the key keywords?

A: rigid foam, polyisocyanurate, polyurethane, sandwich panel core, thermal insulation, compressive strength, shear strength, dimensional stability, impact resistance.