Overview
ISO/TR 10809-1:2023 - Cast irons - Part 1: Materials and properties for design is a technical report that provides practical guidance on using cast irons as engineering materials. It is intended for designers, specifiers and engineers who need to understand what cast irons can and cannot deliver in service, how to choose appropriate grades, and how material selection interacts with section thickness, processing and heat treatment. The report is guidance rather than a metallurgical textbook and emphasizes realistic specification to avoid unnecessary or unachievable requirements.
Key topics and technical coverage
The report summarizes material types, properties and design-relevant behaviour of cast irons, including:
- Cast iron families: grey cast iron, spheroidal (ductile) graphite iron, ausferritic spheroidal graphite (ADI), malleable iron, compacted/vermicular graphite iron, austenitic cast iron and abrasion‑resistant cast irons.
- Microstructure and graphite morphology: how graphite form, distribution and size influence mechanical and physical properties.
- Mechanical properties: tensile, yield, hardness and impact considerations for different microstructures and grades.
- Section sensitivity: effects of wall thickness on achievable microstructure and properties.
- Composition and carbon equivalent: role of alloying elements and carbon equivalent in property control.
- Heat treatment and welding: guidance on heat treatments (including ADI processing), hardness control and welding implications.
- Special performance topics: abrasion resistance, strain-rate and temperature effects, machinability, and impact‑resistant grades.
- Selection guidance: practical criteria for choosing appropriate grades and avoiding unrealistic specifications.
Practical applications and who uses this standard
ISO/TR 10809-1 is useful for:
- Mechanical and design engineers selecting cast iron for components (gears, housings, brake drums, pipes, wear parts).
- Materials and foundry engineers specifying grades, heat treatments and section designs.
- Purchasing/specification teams preparing realistic material requirements for procurement.
- Failure analysts and maintenance engineers evaluating material suitability and causes of problems.
Practical benefits include improved material selection, optimized component performance, fewer specification disputes and reduced production problems caused by unrealistic requirements.
Related standards
This Technical Report complements product and grade standards, for example:
Use ISO/TR 10809-1:2023 as design‑focused guidance to match cast‑iron material selection with application requirements and realistic manufacturing constraints.