ABRASION-RESISTANT CAST IRONS - CLASSIFICATION (ISO 21988:2006, IDT)
This Malaysian Standard defines the grades of abrasion-resistant white cast irons. It specifies the grades in terms of:
- chemical composition;
- hardness.
The types of abrasion-resistant white cast irons covered by this International Standard are:
a) unalloyed or low alloy cast irons;
b) nickel-chromium cast irons covering two general types:
4 % Ni 2 % Cr cast irons;
9 % Cr 5 % Ni cast irons;
c) high chromium cast irons covering five ranges of chromium content:
Cr > 11 % to u 14 %;
Cr > 14 % to u 18 %;
Cr > 18 % to u 23 %;
Cr > 23 % to u 30 %;
Cr > 30 % to u 40 %.
