BS ISO 21988:2006

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Designation
5 Order information
6 Manufacture
   6.1 General
   6.2 Heat treatment
7 Requirements
   7.1 Chemical composition
   7.2 Brinell hardness
   7.3 Microstructure
8 Sampling
   8.1 Frequency of sampling for chemical analysis
   8.2 Number and frequency of Brinell hardness tests
9 Testing
   9.1 Chemical analysis
   9.2 Hardness test
   9.3 Microstructure sample
10 Retests
   10.1 Need for retests
   10.2 Test validity
   10.3 Nonconforming test results
   10.4 Heat treatment of castings
Annex A (informative) Heat treatment
Annex B (informative) Conversion between Brinell, Vickers
        and Rockwell C hardness
Annex C (informative) Relationship between casting
        thickness and chemical composition for nickel
        -chromium cast irons
Annex D (informative) Typical microstructures of
        abrasion-resistant cast iron
Annex E (informative) Cross references to other standards
Bibliography

Specifies the grades of abrasion-resistant white cast irons. It specifies the grades in terms of: - chemical composition; - hardness.

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: unalloyed or low alloy cast irons; nickel-chromium cast irons covering two general types: 4%Ni 2%Cr cast irons; 9%Cr 5%Ni cast irons; 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%.