The Unified Numbering System (UNS) for Metals and Alloys serves as a comprehensive standardization framework for identifying and categorizing ferrous metals and alloys across international markets. This system effectively eliminates confusion caused by duplicate identification numbers and provides a structured approach through nine distinct series of designations.
The Unified Numbering System (UNS) is a standardized designation system established under ASTM E527 and SAE J1086 for numbering metals and alloys. This system provides a unified method for correlating various numbering systems used by organizations such as the American Society for Testing Materials (ASTM) and the Aluminum Association (AA).
In 1993, the Italian National Standards Institute (UNI) adopted the International Classification for Standards (ICS) established by the International Organization for Standardization (ISO). UNI standards, produced by the Ente Nazionale Italiano di Unificazione, use the prefix UNI followed by a four-digit product form code and an alphanumeric alloy identification, similar to the DIN system.
This comprehensive guide presents Japanese Industrial Standards (JIS) for metallurgical materials including castings, forgings, welding materials, and powder metallurgy products. The JIS designation system utilizes a prefix followed by a letter indicating the material category and four digits.
This comprehensive guide details the Japanese Industrial Standards (JIS) classification system for various steel and iron materials. Developed by the Japanese Industrial Standards Committee (JISC) in Tokyo, these standards are widely adopted throughout Asia and the Pacific regions, serving as a foundation for Korean, Chinese, and Taiwanese national systems.
The Japanese Industrial Standards (JIS) for steel materials encompass three primary volumes of standardized specifications. These standards cover structural, constructional, tool, stainless, and heat-resisting steels, providing essential details about chemical composition, mechanical properties, and specific applications. They include specifications for various steel forms such as plates, sheets, strips, pipes, and castings, with a focus on uses in boilers, pressure vessels, and specialized industrial applications.