ISO 6743-14:1994 PDF

Overview

ISO 6743-14:1994 is an international standard that establishes a detailed classification system for hardening fluids within Family U used specifically in the heat treatment of metallic materials. Published by the International Organization for Standardization (ISO), this part of the ISO 6743 series provides a standardized coding system for identifying lubricants and related products that are critical in hardening processes. It serves as a key reference for manufacturers, users, and quality controllers involved in industrial heat treatment operations. This standard complements ISO 6743-0, which covers general classification principles for lubricants and industrial oils.

Key Topics

• Classification of Hardening Fluids: ISO 6743-14 categorizes hardening fluids into distinct groups based on their composition and application in heat treatment. These are identified by a three-letter code starting with the letter 'U' for the heat treatment product family.

• Product Types:

  • Mineral oil-based products (H)
  • Aqueous fluids such as water or polymer solutions (A)
  • Molten salts (S)
  • Gases (G)
  • Fluidized bed hardening fluids (F)
  • Other cases (K)

• Detailed Coding System: The second and third letters of the ISO code specify the principal category and specifics such as operating temperature or fluid properties. For example:

  • UHA – Oil for normal cold hardening (