Austempered Ductile Iron
austempered ductile iron, the material
ADI applications
austempered ductile iron
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The Cost Benefits

ADI material cost is competitive

The base price of ADI material is lower per kilo than steel or aluminium but this accounts for only a fraction of the potential savings. Designing with ADI can save cost at each stage of manufacture; parts can then be produced for less than a steel forging or for half of the cost in aluminium. Several factors favour ADI in value engineering:

Excellent castability: Readily cast into complex shapes, Ductile Iron has a very high yield rate i.e. the proportion of metal poured versus metal shipped.

Lower machining cost: Well suited to near net shape casting, ADI requires less starting material and less metal removal. Prior to Austempering, Ductile Iron exhibits better machinability than free-machining steels. Both Ductile Iron and ADI produce dense, discontinuous chips that are easily handled, further reducing cost per kilo.

Heat treatment savings: Austempering generally costs less than Carburising or Induction Hardening, and produces a higher degree of uniformity and predictable dimensional changes.

Performance is cost effective

Low energy content: Producing a typical ADI casting consumes 50% less energy than a steel casting, and 80% less energy than a steel forging.

Best value: When comparing relative cost per unit of yield strength, ADI is generally the best buy.



ADI Treatments Limited, Doranda Way, West Bromwich, West Midlands, B71 4LE  Tel: +44 (0)121 525 0303