This SAE Standard covers the mechanical and physical property requirements for Austempered Ductile Iron (ADI) castings used in automotive and allied industries. Specifically covered are:

a

Hardness

b

Tensile Strength

c

Yield Strength

d

Elongation

e

Modulus of Elasticity

f

Impact Energy

g

Microstructure

In this document SI units are primary and in-lb units are derived.

Appendix A provides general information and related resources on the microstructural, chemical and heat treatment requirements to meet the mechanical properties needed for ADI in particular service conditions and applications.