GSO ISO 21988:2013
ISO 21988:2006
Gulf Standard
Current Edition
·
Approved on
31 December 2013
Abrasion-resistant cast irons -- Classification
GSO ISO 21988:2013 Files
English
14 Pages
Current Edition
Reference Language
45.5 OMR
GSO ISO 21988:2013 Scope
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:
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 ≤ 14 %;
Cr > 14 % to ≤ 18 %;
Cr > 18 % to ≤ 23 %;
Cr > 23 % to ≤ 30 %;
Cr > 30 % to ≤ 40 %.
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