ASTM C534/C534M-24 PDF
Name in English:
St ASTM C534/C534M-24
Name in Russian:
Ст ASTM C534/C534M-24
Original standard ASTM C534/C534M-24 in PDF full version. Additional info + preview on request
Full title and description
ASTM C534/C534M-24 — Standard Specification for Preformed Flexible Elastomeric Cellular Thermal Insulation in Sheet and Tubular Form. This specification defines material composition, classification, and required physical performance for preformed flexible elastomeric cellular thermal insulation supplied in sheet and tubular shapes for thermal insulation of piping, equipment, and ductwork.
Abstract
This standard covers sheet and tubular preformed flexible elastomeric cellular thermal insulation. Materials covered are generally non‑thermoplastic, thermoset elastomers (natural or synthetic rubber formulations and related additives). Products are classified into three grades by operating temperature range and must meet specified values for apparent thermal conductivity, water absorption, water‑vapor permeability, and linear shrinkage.
General information
- Status: Superseded (active revision: ASTM C534/C534M‑25).
- Publication date: 2024 (designated “‑24”; publication listed October 2024).
- Publisher: ASTM International.
- ICS / categories: Cellular materials; Thermal and sound insulating materials (commonly 83.100; 91.100.60).
- Edition / version: C534/C534M‑24 (DOI reference: 10.1520/C0534_C0534M‑24).
- Number of pages: 6.
Scope
The specification covers preformed flexible elastomeric cellular thermal insulation in sheet and tubular form. It classifies materials into three grades by intended operating temperature ranges: Grade 1 for systems from −183 to 104 °C (−297 to 220 °F), Grade 2 for systems from −183 to 150 °C (−297 to 300 °F), and Grade 3 for systems from −183 to 120 °C (−297 to 250 °F) with limits on leachable halogens (maximum ~200 ppm for chlorides and fluorides). The standard also clarifies that SI and inch‑pound units are each to be treated independently.
Key topics and requirements
- Material types: preformed, flexible elastomeric cellular insulation (non‑thermoplastic thermoset rubber bases, with allowable modifiers and additives).
- Classification by grade linked to maximum operating temperature and service application.
- Prescribed physical performance tests and limits, including apparent thermal conductivity, water absorption, water‑vapor permeability, and linear shrinkage.
- Limits on leachable chlorides and fluorides for certain grades (Grade 3).
- Unit system handling: SI and inch‑pound units are separate—do not combine values from both systems.
- Related editorial and dimensional updates under work items (e.g., potential incorporation of ASTM C585 dimensional tolerances and E29 rounding language noted in related work items).
Typical use and users
Used by manufacturers and suppliers of elastomeric insulation, specifiers and designers for HVAC, refrigeration, cryogenic and industrial piping/equipment insulation, testing and quality laboratories, and procurement/specification authors who need standardized material performance and classification for sheet and tubular elastomeric insulation products.
Related standards
This standard is maintained by ASTM Committee C16 (Thermal Insulation). Closely related documents and committee work items include standards addressing dimensional tolerances (ASTM C585 is referenced for related tolerance work) and general ASTM test/rounding practices (ASTM E29 language noted for editorial consistency). The C534 family has later and earlier revisions (see C534/C534M‑25 active revision).
Keywords
preformed elastomeric cellular, thermal insulation, sheet insulation, tubular insulation, elastomeric foam, Grade 1/2/3, apparent thermal conductivity, water absorption, water‑vapor permeability, linear shrinkage.
FAQ
Q: What is this standard?
A: ASTM C534/C534M‑24 is a specification that defines requirements for preformed flexible elastomeric cellular thermal insulation supplied in sheet and tubular form, including material types, grade classification by operating temperature, and required physical properties.
Q: What does it cover?
A: It covers composition (non‑thermoplastic thermoset elastomers and permitted additives), classification into three temperature grades, and mandatory performance characteristics and test limits such as thermal conductivity, water absorption, water‑vapor permeability, and linear shrinkage; it also states handling of SI vs inch‑pound units.
Q: Who typically uses it?
A: Manufacturers, product engineers, specification writers, consultants, insulation contractors, and testing laboratories involved with HVAC, refrigeration, cryogenic systems, and industrial piping/equipment insulation.
Q: Is it current or superseded?
A: As published for the “‑24” designation, this edition is superseded by a later active revision (ASTM C534/C534M‑25). Check the ASTM standards tracker or ASTM publications for the current active designation and effective dates.
Q: Is it part of a series?
A: Yes — it is maintained under ASTM Committee C16 and is part of the family of ASTM thermal‑insulation specifications and test methods for cellular and other insulating materials. Related ASTM work items have addressed editorial and dimensional updates to the document.
Q: What are the key keywords?
A: Preformed elastomeric cellular insulation, thermal conductivity, water absorption, water‑vapor permeability, linear shrinkage, sheet, tubular, Grade 1, Grade 2, Grade 3.