ASME B31T 2021

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ASME B31T – 2021 Standard Toughness Requirements for Piping

Published By	Publication Date	Number of Pages
ASME	2021

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Description

This Standard provides requirements for evaluating the suitability of materials used in piping systems for piping that may be subject to brittle failure due to low-temperature service conditions.

PDF Catalog

PDF Pages	PDF Title
4	CONTENTS
5	FOREWORD
6	ASME B31 COMMITTEE ROSTER
7	CORRESPONDENCE WITH THE B31 COMMITTEE
9	INTRODUCTION
11	ASME B31T-2021 SUMMARY OF CHANGES
14	1 GENERAL 1.1 Scope 1.2 Units of Measure 2 GLOSSARY 3 LOW-TEMPERATURE RANGES AND REQUIREMENTS 3.1 Low-Temperature Service Requirements 3.2 Material Groupings (Column 1 of Table 3.1-1)
15	3.3 Governing Thickness and Notes (Columns 2 and 3 of Table 3.1-1) 3.4 Low-Temperature Service Limit (Column 4 of Table 3.1-1) 3.5 Material Requirements for Low-Temperature Service (Columns 5 and 6 of Table 3.1-1) 3.6 Design Requirements for Low-Temperature Service (Columns 10 Through 18 of Table 3.1-1)
16	3.7 Fabrication Requirements for Low-Temperature Service (Columns 7, 8, and 9 of Table 3.1-1)
19	4 IMPACT TESTING METHODS AND ACCEPTANCE CRITERIA 4.1 General 4.2 Procedure 4.3 Test Specimens
20	4.4 Test Temperatures 4.5 Acceptance Criteria
21	5 REFERENCES
25	Tables Table 3.1-1 Low-Temperature Service Requirements by Material Group
41	Table 3.2-1 Material Groupings by Material Specification
48	Table 4.4.2-1 Charpy Impact Test (Absorbed Energy) Temperature Reduction for Material or Specimens <10 mm (0.394 in.)
49	Table 4.5.1-1 Minimum Required Charpy V-Notch Impact Values
50	MANDATORY APPENDIX I IMPACT TEST EXEMPTION CURVES
51	Figures Figure I-1 Impact Test Exemption Curves for T-Number Groups CS A, CS B, CS C, and CS D (U.S. Customary Units)
52	Figure I-1M Impact Test Exemption Curves for T-Number Groups CS A, CS B, CS C, and CS D (SI Units)
53	Table I-1 Tabular Values for Figures I-1 and I-1M
56	Figure II-1 Stress Ratio Curve (U.S. Customary Units) MANDATORY APPENDIX II STRESS RATIO CURVES
57	Figure II-1M Stress Ratio Curve (SI Units)
58	MANDATORY APPENDIX III MATERIAL GROUPINGS BY T-NUMBER
59	Table III-1 Material Groupings by T-Number
66	NONMANDATORY APPENDIX A FLOWCHART OF REQUIREMENTS
67	Figure A-1 Flowchart of Requirements
68	NONMANDATORY APPENDIX B GUIDELINES FOR ESTABLISHING T-NUMBER GROUP