PD ISO/TR 945-3:2016 - Page 2

Microstructure of cast irons. Matrix structures | Status: Confirmed, Current

1 Scope This Technical Report gives the designations, descriptions and reference micrographs of the matrix structures of cast irons. It applies to the following types of cast irons:

• — grey cast irons (Table 4.1);
• — spheroidal graphite cast irons (Table 4.2);
• — austenitic cast irons (Table 4.3);
• — malleable cast irons (Table 4.4);
• — compacted (vermicular) graphite cast irons (Table 4.5);
• — ausferritic spheroidal graphite cast irons (Table 4.6);
• — abrasion-resistant cast irons (Table 4.7).

Each matrix structure is defined with explanations and micrographs. Unless otherwise stated in Clause 4, the micrographs shown correspond to samples etched with a solution of 2 % nitric acid in ethanol (Nital).