Iso Tr 15931 Pdf Jun 2026

– Two-letter codes identifying the iron type and its graphite or matrix structure: JL : Grey (lamellar graphite) cast iron. JS : Spheroidal (nodular) graphite cast iron. JV : Compacted (vermicular) graphite cast iron. JY : Pig iron. JMB / JMW : Blackheart or Whiteheart malleable iron.

Because ISO standards are copyrighted, you generally must purchase them from authorized distributors. You can find the official document and previews here: Official ISO Store : View the status and details of ISO/TR 15931:2004 ANSI Webstore : Provides a free preview PDF and options to buy the full version. iTeh Standards : Offers another preview link iso tr 15931 pdf

: By using the designations outlined in this TR, companies reduce the risk of "material mismatch," which can lead to catastrophic mechanical failures in critical components like engine blocks, pipes, or heavy machinery. – Two-letter codes identifying the iron type and

: Describing the graphite structure or microstructure (e.g., "G" for Grey, "S" for Spheroidal). JY : Pig iron