ASTM C242-21 PDF

Overview

ASTM C242-21: Standard Terminology of Ceramic Whitewares and Related Products is an international standard published by ASTM International. This terminology standard provides industry-specific definitions for words and phrases commonly used in the field of ceramic whitewares and related products. Its purpose is to ensure clear communication and mutual understanding among professionals engaged in manufacturing, quality control, testing, and trading of ceramic products. The vocabulary covered in ASTM C242-21 is unique to ceramic whitewares and is not duplicated in general dictionaries. For terminology related to surface imperfections on ceramics, users are referred to ASTM F109.

Key Topics

ASTM C242-21 addresses terminology essential to the ceramic whitewares sector, including:

• Industry-Specific Definitions: Terms and phrases that are unique or have specialized meanings in ceramic whitewares.
• Alphabetical Organization: Double words, hyphenated terms, and phrases are listed alphabetically, with significant terms cross-referenced for ease of use.
• Physical and Chemical Properties: Definitions related to density, absorption, adsorption, porosity, particle size, and surface coatings.
• Manufacturing Processes: Terminology for common ceramic processes like ball milling, blunging, firing (bisque, glost, single), casting methods (drain, solid), and hot pressing.
• Product Types: Precise definitions for products including porcelain, bone china, earthenware, tile (mosaic, faience, pavers), and technical ceramics such as alumina or steatite whitewares.
• Defect and Quality Terms: Language surrounding flaws and manufacturing variance, such as blistering, bloating, crazing, pinholes, dunning, and orangepeel.
• Test Methods and Measurements: Terms describing testing methodologies, such as coefficient of friction, modulus of rupture, mean coefficient of thermal expansion, and moisture expansion.

Applications

ASTM C242-21 is widely used in:

• Manufacturing: Assisting ceramic manufacturers in defining material requirements, product characteristics, process steps, and quality benchmarks.
• Quality Assurance: Establishing a common vocabulary for inspection staff and laboratories when describing and classifying product characteristics or defects.
• Product Specification and Procurement: Reaffirming mutual understanding in purchase contracts and technical datasheets for ceramic whitewares, tiles, and components.
• Testing and Research: Providing terminology for laboratories and research institutions conducting materials testing or developing new ceramic formulations.
• Education and Training: Serving as a reference for industry newcomers, students, and professionals updating their knowledge of current industry language and best practices.

Related Standards

ASTM C242-21 references and is compatible with several related standards, including:

• ASTM F109: Terminology Relating to Surface Imperfections on Ceramics - for detailed defect definitions.
• ASTM D1129: Terminology Relating to Water - for terms associated with water in testing and processing.
• BS 2955: British Standard Glossary of Terms Relating to Powders - supporting terminology for powder technology.
• Other ASTM practices: Especially those withdrawn, such as E180 and F465, which historically provided guidelines on test precision and accuracy.

Practical Value

Utilizing ASTM C242-21 helps professionals and organizations:

• Achieve Consistency: Standardized terminology reduces miscommunication across international markets and supply chains.
• Enhance Product Quality: Accurate descriptions help pinpoint issues during production and support targeted improvements.
• Meet Compliance Requirements: Adhering to industry-standard language facilitates conformity with regulatory and trade standards.
• Support Technical Documentation: Writers of manuals, data sheets, and standards benefit from a consistent vocabulary.

For comprehensive and up-to-date terminology in ceramics, ASTM C242-21 stands as the authoritative reference, supporting clarity and uniformity across the ceramic whitewares industry.