BS 3688-1:1963

Co-operating organizations
Foreword
METHOD OF TEST
1. Scope
2. Basis of test
SECTION ONE: SYMBOLS AND DEFINITIONS
3. Symbols
4. Terms and definitions
SECTION TWO: TEST PIEGES
5. General
6. Form of test piece
SECTION THREE: TESTING EQUIPEMENT
7. Testing machine
8. Extensometer
9. Heating apparatus
10. Measurement of temperature
SECTION FOUR: TEST PROCEDURE
11. Measurement of cross-sectional area
12. Marking the original gauge length
13. Heating of test piece
14. Straining of test piece
15. Measurement of strain
16. Measurement of test piece after fracture
SECTION FIVE: DETERMINATION OF PROPERTIES
17. Young's modulus of eiasticity
18. Proof stress
19. Lower yield stress
20. Tensile Strength
21. Percentage elongation and deduction of
    area after fracture
SECTION SIX: PRESENTATION OF RESULTS
22 Requirements
SECTION SEVEN: NOTES AND RECOMMENDATIONS
23 Notes and recommendations

Recommendations regarding the form and dimensions of test pieces are given together with comprehensive notes for general guidance in carrying out \'hot\' tensile tests. An important feature of the standard concerns the straining of the test piece. A range within which the strain rate should be controlled when determining values of lower yield stress and roof stress is specified.