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ASME B31T 2015

ASME B31T 2015

$98.04

ASME B31T Standard Toughness Requirements for Piping

Published By Publication Date Number of Pages
ASME 2015 54
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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
Tables
5 FOREWORD
6 COMMITTEE ROSTER
7 CORRESPONDENCE WITH THE B31 COMMITTEE
8 ASME B31T-2015 SUMMARY OF CHANGES
10 1 INTRODUCTION
2 GLOSSARY
11 3 LOW-TEMPERATURE RANGES AND REQUIREMENTS
3.1 Low-Temperature Service Requirements
3.2 Material Groupings (Column 1 of Table 3.1-1)
3.3 Nominal 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 (10-18 of Table 3.1-1)
3.6.1 Minimum Material Temperature Without Impact Testing.
12 3.6.2 Stress Ratio.
3.7 Fabrication Requirements for Low-Temperature Service (Columns 7, 8, and 9 of Table 3.1-1)
3.7.1 Temperature Limits.
3.7.2 Welding Procedure Specifications
3.7.2.1 General.
3.7.2.2 Test Specimens.
13 3.7.2.3 Test Requirements.
3.7.3 Forming and Bending Processes.
14 3.7.3.1 Materials Not Requiring Procedure Qualification Tests.
3.7.3.2 Performance of Procedure Qualification Test.
3.7.3.3 Acceptance Criteria.
3.7.4 Weld Filler Metal
3.7.4.1 General.
15 3.7.4.2 Test Coupons.
3.7.4.3 Test Specimens.
3.7.4.4 Test Requirements.
4 IMPACT TESTING METHODS AND ACCEPTANCE CRITERIA
4.1 General
4.2 Procedure
16 4.3 Test Specimens
4.4 Test Temperatures
4.4.1 For Materials With Thickness Equal to or Greater Than 10 mm (0.394 in.).
4.4.2 For Materials With Thickness Less Than 10 mm (0.394 in.).
4.5 Acceptance Criteria
4.5.1 Minimum Energy Requirements.
4.5.2 Lateral Expansion Requirements.
4.5.3 Weld Impact Test Requirements.
4.5.4 Retests
4.5.4.1 For Absorbed Energy Criteria.
4.5.4.2 For Lateral Expansion Criterion.
17 4.5.4.3 For Erratic Test Results.
18 Table 3.1-1 Low-Temperature Service Requirements by Material Group
29 Table 3.2-1 Material Groupings by Material Specification
35 Table 4.4.2-1 Charpy Impact Test (Absorbed Energy) Temperature Reduction for Material or Specimens < 10 mm (0.394 in.)
Table 4.5.1-1 Minimum Required Charpy V-Notch Impact Values
36 MANDATORY APPENDIX I TEMPERATURE THICKNESS CURVES
37 Figures
Fig. I-1 Temperature Thickness Curves for Groups A, B, C, and D (Customary Units)
38 Fig. I-1M Temperature Thickness Curves for Groups A, B, C, and D (SI Units)
39 Table I-1 Tabular Values for Figs. I-1 and I-1M
41 Fig. II-1 Stress Ratio Curve (Customary Units)
MANDATORY APPENDIX II STRESS RATIO CURVES
42 Fig. II-1M Stress Ratio Curve (SI Units)
43 MANDATORY APPENDIX III MATERIAL GROUPINGS BY T-NUMBER
44 Table III-1 Material Groupings by T-Number
50 NONMANDATORY APPENDIX A FLOWCHART OF REQUIREMENTS
51 Fig. A-1 Flowchart of Requirements
52 NONMANDATORY APPENDIX B GUIDELINES FOR ESTABLISHING T-NUMBER GROUP

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