ASTM F484-08 (2019) rus PDF

Full title and description

St ASTM F484-08 (2019) rus — Russian-language edition of ASTM F484-08: "Standard Test Method for Stress Crazing of Acrylic Plastics in Contact with Liquid or Semi‑Liquid Compounds". The document describes a laboratory test procedure to evaluate the tendency of transparent acrylic plastics (three material types) to develop hairline crazes when exposed to liquid or semi‑liquid compounds while under bending stress.

Abstract

This test method specifies specimen preparation, conditioning, stressing geometry, applied outer‑fiber stresses for Types A, B and C acrylics, test temperature and humidity, exposure of stressed specimens to test compounds, observation periods and pass/fail criteria for visible crazing. It is commonly used to screen cleaning agents, lubricants and other liquids for compatibility with acrylic transparent enclosures and components.

General information

• Status: Russian translation (2019) — listed as replaced / superseded; underlying ASTM designation F484-08 has later reapprovals and revisions by ASTM International.
• Publication date: 2019 (Russian translation edition). Original ASTM designation F484‑08: original approval and later reapprovals (2008 edition F484‑08; reapproval/technical corrigenda appear in later years; ASTM issued a revision cycle shown as F484‑08(2013) and later editorial updates). For the most recent ASTM official revision see ASTM's document summary (ASTM updates in 2025).
• Publisher: ASTM International (original standard); Russian-language distribution by third‑party resellers/translators (commercial Russian PDF editions).
• ICS / categories: 83.080.10 — Plastics; test methods for thermosetting/thermoplastic materials (acrylics).
• Edition / version: Designation shown as F484‑08 (Russian translation 2019). The ASTM numeric suffix "-08" refers to the 2008 approved edition of the method; later reapprovals/updates are documented by ASTM (see 2013 and 2025 records).
• Number of pages: 3 pages (short test method).

Scope

This standard covers the determination of stress‑crazing (hairline craze formation) produced by contact with liquid or semi‑liquid test compounds on transparent acrylic plastics under bending stress. It applies to three types of acrylic materials (Types A, B and C); test specimens are machined from polished sheet and conditioned before testing. The method specifies stress levels, specimen geometry, conditioning (temperature and relative humidity), and observation intervals for evaluating crazing. It is intended for screening compatibility of liquids with acrylics, not for comprehensive long‑term environmental qualification.

Key topics and requirements

• Specimen dimensions and surface finish: machined from 0.25 ± 0.025 in. (≈6.4 mm ±0.64 mm) polished acrylic sheet; typical specimen width and length per the method.
• Outer‑fiber applied stresses: typical prescribed stresses — Type A ≈3000 psi (20 685 kPa), Type B ≈3500 psi (24 132 kPa), Type C ≈4500 psi (31 027 kPa).
• Conditioning and test environment: specimens conditioned at about 75 ± 10 °F and 50 ± 5% RH prior to testing; tests conducted at similar controlled conditions.
• Procedure: stressed specimens are exposed to the liquid/semi‑liquid test compound for specified contact times and then inspected for crazing; fulcrum and loading geometry (including fulcrum radius) are specified.
• Pass/fail criteria: visual detection of craze formation (hairline cracking) under prescribed magnification/observation conditions; documentation of exposure times and observations.

Typical use and users

Commonly used by materials laboratories, quality and R&D teams at acrylic/plastics manufacturers, aerospace and transportation OEMs and suppliers to screen cleaning agents, maintenance fluids, adhesives or other compounds for compatibility with transparent acrylic components (e.g., canopies, windows, instrument covers). Test houses and regulatory/qualification engineers use the method for supplier verification and product acceptance testing.

Related standards

Related ASTM test methods and documents cover acrylic/plastic property testing and compatibility screening, and other cleaning‑material qualification procedures developed by ASTM Committee F07 (Aerospace). Users typically consult companion standards for acrylic physical properties, environmental conditioning and cleaning material evaluation. For the authoritative list and any revisions consult ASTM International's document records.

Keywords

acrylic plastics; stress crazing; crazing test; hairline crack; liquid compatibility; semi‑liquid compounds; bending stress; outer‑fiber stress; acrylic window/canopy testing; ASTM F484.

FAQ

Q: What is this standard?

A: ASTM F484 is a standardized laboratory test method that evaluates whether a liquid or semi‑liquid causes stress‑crazing (fine hairline cracks) in transparent acrylic plastics when the material is under bending (outer‑fiber) stress. The file title shown here is the Russian translation (2019) of the F484‑08 method.

Q: What does it cover?

A: It covers specimen preparation, specified bending stress levels for three acrylic types, test geometry (fulcrum/load), conditioning (temperature and humidity), exposure of stressed specimens to test compounds, observation intervals and acceptance criteria for visible crazing. The method is intended for screening compatibility of liquids with acrylics.

Q: Who typically uses it?

A: Materials and test laboratories, acrylic manufacturers, aerospace/transportation OEMs and suppliers, maintenance and qualification engineers, and others who must assess chemical compatibility of liquids with transparent acrylic components.

Q: Is it current or superseded?

A: The Russian‑language 2019 edition is a translation of the ASTM F484‑08 method and several later reapprovals/revisions of the underlying ASTM designation exist. Listings show reapproval/editions in 2013 and further editorial/revision activity recorded by ASTM in later years (notably ASTM document records updated into 2025). The translated 2019 copy is therefore a historical/translated edition; users requiring the current official procedure should check ASTM International for the latest active revision.

Q: Is it part of a series?

A: It is part of ASTM's body of test methods relevant to plastics and to Committee F07 (Aerospace) publications used for evaluating materials and cleaning compounds for aerospace applications. It is a standalone test method (F484) but is typically used alongside other ASTM test methods for complete materials qualification.

Q: What are the key keywords?

A: Acrylic, stress crazing, hairline craze, liquid compatibility, semi‑liquid compound, bending stress, outer‑fiber stress, ASTM F484.