AS 1855-1976

1 - AS 1855-1976 METHODS FOR THE DETERMINATION OF TRANSVERSE TENSILE PROPERTIES OF ROUND STEEL PIPE
4 - PREFACE
5 - CONTENTS
6 - 1 SCOPE.
6 - 2 APPLICATION.
6 - 3 PRINCIPLE OF TEST.
7 - 4 DEFINITIONS.
7 - 4.1 Pipe
7 - 4.2 Test sample
7 - 4.3 Test specimen
7 - 4.4 Test piece
7 - 4.5 Extensometer gauge length
7 - 4.6 Strain
7 - 4.7 Nominal strain
7 - 4.8 Extension
7 - 4.9 Elongation
7 - 4.10 Stress
7 - 4.11 Proof stress.
8 - 4.12 Permanent set stress
8 - 4.13 Yield stress.
8 - 4.14 von Mises correction factor (M)
8 - 4.15 Proving test
8 - 5 NOTATION.
9 - 6 TEST PIECE.
9 - 6.1 Selection.
9 - 6.2 Preparation.
9 - 6.3 Form and Dimensions.
10 - 7 ACCURACY OF MEASUREMENT AND TESTING EQUIPMENT.
10 - 7.1 Accuracy of Measurement.
10 - 7.2 Strain Measuring Equipment.
10 - 7.3 Pressure Measuring Equipment.
11 - 8 TEMPERATURE OF THE TEST PIECE.
11 - 9 PROCEDURE.
11 - 10 STRAINING RATE.
11 - 11 DETERMINATION OF PROPERTIES.
11 - 11.1 General.
12 - 11.2 Calculation of Stress.
12 - 11.3 von Mises Correction Factor
12 - 11.4 Yield Stresses.
12 - 11.5 Proof Stresses.
13 - 12 PROVING TEST FOR PERMANENT SET STRESS.
13 - 12.1 Conducting a Proving Test.
13 - 12.2 Assessment of a Proving Test.
13 - 13 RECORD OF RESULTS.
13 - 14 REPORT.
14 - APPENDIX A - TEST EQUIPMENT
15 - APPENIDX B - DETERMINATION OF NON- PROPORTIONAL AND TOTAL ELONGATION PROOF STRESSES
16 - APPENDIX C - NOTES ON SAFETY
17 - APPENDIX D - EXTENSOMETERS
17 - D1 GENERAL.
17 - D2 ROLLER-CHAIN EXTENSOMETER.
18 - D3 COMMENTS ON THE CALIBRATION OF EXTENSOMETERS.
20 - APPENDIX E - RELATIONSHIP BETWEEN STRESS AND PRESSURE
21 - APPENDIX F - RECORD OF RESULTS

Covers the testing of pipe in the size range 150 - 1100 mm diameter. It describes the preparation and form of two types of test piece and outlines procedures for the determination of yield stress, proof stress and permanent set stress and for conducting a proving test. Appendices include notes on test equipment, determination of non-proportional and total elongation proof stresses, extensometers and their calibration, and the recording of results.

This standard describes methods by which transverse (circumferential) tensile properties of a section of a round steel pipe (tube) may be determined or proven to be above specified values.The methods permit the use of both short-length and long-length pipe test pieces, but they preclude spirally welded pipe.The methods cover the testing of steel pipe in the size range 150-1100 mm in diameter, having a thickness/diameter ratio of less than 0.06.The methods can be used for the determination of, or as a proving test for -(a) yield stress; (b) proof stress; (c) permanent set stress.The methods cannot be used to measure properties associated with fracture in standard tensile tests because fracture of pipe is not achieved during the test.

Reconfirmed 1989