Category ASTM Standards

🧪 Composition and Chemical Requirements This specification covers the pigment commercially known as strontium chromate, suitable for use in protective or decorative coatings. The pigment must be commercially pure strontium chromate free of extenders and organic matter, except for properties-enhancing…

📐 Scope and Significance of the Epoxy Content Test ASTM D1652‑11 (Reapproved 2019) specifies a robust procedure for the quantitative determination of epoxide in epoxy resins. The test method is designed to accurately measure epoxide levels in a wide range…

The ASTM D1647–89 (Reapproved 1996) standard outlines two reliable methods for gauging the durability of dried varnish films. These tests are essential for a meaningful comparison of protective coatings exposed to water and mild chemical agents, bridging the gap between…

📜 Scope and Chemical Composition ASTM D1648 – 86 (Reapproved 2020) provides the standard specification for basic lead silicochromate pigment, a corrosion-inhibiting pigment commonly utilized in protective coatings. This specification defines two distinct types of this pigment based on particle…

ASTM D1644‑01 (Reapproved 2023) establishes standard test methods for determining the nonvolatile content of varnishes. The nonvolatile fraction represents the material that remains after the volatile solvents are driven off under controlled heat. This measurement serves as an approximate indicator…

📐 Scope and Core Definitions ASTM D1646-19a establishes test methods for measuring critical characteristics of rubber using the Mooney viscometer. The primary characteristic, Mooney viscosity, is defined as the shearing torque resisting the rotation of a cylindrical metal disk (or…

📋 Scope and Significance of D1640/D1640M The ASTM D1640/D1640M −14 (Reapproved 2022) standard, approved for use by U.S. Department of Defense agencies, provides a comprehensive framework for evaluating the drying, curing, and film formation stages of organic coatings. The values…

🛡️ Scope and Significance of Outdoor Varnish Testing ASTM D1641-04 establishes a standardized procedure for evaluating the durability of varnishes applied to a wooden substrate. The values stated in SI units are regarded as the standard. The practice is designed…

The ASTM D1636-21 standard specifies the requirements for compression molding, thermosetting allyl compounds. This specification covers classification based on filler and resin composition, general requirements for uniformity, and references standard test methods for evaluation. The compounds are identified by type,…

🔬 Scope and Definition of Acid Value ASTM D1639-90 (Reapproved 1996), formally titled the Standard Test Method for Acid Value of Organic Coating Materials, establishes a titration-based procedure for quantifying the free acidity present in the nonvolatile portion of varnishes,…

📐 Specimen Geometry and Test Method Selection ASTM D1633-17 defines two alternative test methods for determining the compressive strength of molded soil-cement cylinders, with the choice of method dictated by the maximum particle size of the material and the required…

This article provides an overview of ASTM D1634-17, a standard test method for assessing the compressive strength of soil-cement by utilizing portions of beams that have been tested for flexural strength in accordance with Test Method D1635. This modified cube…