BS ISO 21988:2006

This standard BS ISO 21988:2006 Abrasion-resistant cast irons. Classification is classified in these ICS categories:

• 77.080.10 Irons

This International 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:

1. unalloyed or low alloy cast irons;

2. nickel-chromium cast irons covering two general types:

   4 % Ni 2 % Cr cast irons;

   9 % Cr 5 % Ni cast irons;

3. high chromium cast irons covering five ranges of chromium content:

   Cr > 11 % to ≤ 14 %;

   Cr > 14 % to ≤ 18 %;

   Cr > 18 % to ≤ 23 %;

   Cr > 23 % to ≤ 30 %;

   Cr > 30 % to ≤ 40 %.