BS ISO 21988:2006
Current
The latest, up-to-date edition.
Abrasion-resistant cast irons. Classification
Hardcopy , PDF
English
31-01-2007
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.
| Committee |
ISE/111
|
| DevelopmentNote |
Supersedes 04/30094343 DC. (01/2007)
|
| DocumentType |
Standard
|
| Pages |
24
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
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%.
| Standards | Relationship |
| ISO 21988:2006 | Identical |
| ISO 6506-1:2014 | Metallic materials — Brinell hardness test — Part 1: Test method |
| ISO/TR 15931:2004 | Designation system for cast irons and pig irons |
| ISO 18265:2013 | Metallic materials — Conversion of hardness values |
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