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MS ISO 21988:2007
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 %.
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02/05/2019
24
NSC 16 - Metallic Materials & Semi-Finished Products
77.080.10
30.00