BS 240:1986

Superseded

View Superseded by

Method for Brinell hardness test and for verification of Brinell hardness testing machines

Available format(s)

Hardcopy , PDF

Superseded date

15-12-1995

Language(s)

English

Published date

31-12-1986

Publisher

British Standards Institution

Foreword
Committees responsible
Method
Section one. General
1. Scope
2. Definitions
3. Symbols and designation of hardness
Section two. Determination of Brinell hardness
4. Principle
5. Apparatus
6. Conditions of test
7. Determination of f/D squared ratio and hardness
     scale
8. Test procedure
9. Calculation of Brinell hardness value
Section three. Direct verification of accuracy of the
testing machine
10. Principle
11. Force
12. Indentor
13. Measuring apparatus
14. Performance test
Section four. Indirect verification of accuracy of the
testing machine
15. Principle
16. Manufacture of hardness test blocks
17. Calibration of hardness test blocks
18. Standardizing machine
19. Indirect verification procedure
20. Assessment of accuracy of measuring apparatus
     and testing machine
Appendices
A. Monitoring the accuracy of the test machine
B. Advisory comment upon Brinell hardness testing
     procedure
C. Minimum thickness of test piece
D. Brinell hardness values (HB) for tests made on flat
     surfaces
Tables
1. Value of f/D squared for representative materials
2. Correlated values of ball diameter and force
     corresponding to values of f/D squared of 30, 10,
     5 and 1
3. Dimensions of indenter balls for testing machines
4. Hardness of indenter balls
5. Maximum permissible error of measuring system
6. Dimensions of hardness test blocks
7. Dimensions of indenter balls for standardizing
     machines
8. Test block hardness for verifiable hardness scales
9. Minimum thickness of test piece for f/D squared
     of 30, 10, 5 and 1
10. Brinell scale HB 10/3000
11. Brinell scale HB 10/1000
12. Brinell scale HB 10/500
13. Brinell scale HB 10/100
14. Brinell scale HB 5/750
15. Brinell scale HB 5/250
16. Brinell scale HB 5/125
17. Brinell scale HB 5/25
18. Brinell scale HB 2.5/187.5
19. Brinell scale HB 2.5/62.5
20. Brinell scale HB 2.5/31.25
21. Brinell scale HB 2.5/6.25
22. Brinell scale HB 2/120
23. Brinell scale HB 2/40
24. Brinell scale HB 2/20
25. Brinell scale HB 2/4
26. Brinell scale HB 1/30
27. Brinell scale HB 1/10
28. Brinell scale HB 1/5
29. Brinell scale HB 1/1
Figure
1. Principle of test and form of indentation

For metals with a hardness up to 600 HB at room temperature. Direct and indirect verification of the accuracy of the testing machine.

Committee	ISE/101
DocumentType	Standard
Pages	44
PublisherName	British Standards Institution
Status	Superseded
SupersededBy	BS EN 10003-1:1995 BS EN 10003-3:1995 BS EN 10003-2:1995
Supersedes	BS 240-1:1962 BS 240-2:1964

Standards	Relationship
EURONORM 3 : 1979	Similar to
EURONORM 125 : 1977	Similar to
ISO 6506:1981	Similar to
ISO 156:1982	Similar to
EURONORM 128 : 1977	Similar to

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BS 240:1986

Method for Brinell hardness test and for verification of Brinell hardness testing machines

Table of Contents

Abstract

General Product Information

International Equivalents

Standards Referenced By This Book

Standards Referencing This Book

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