1、AN INTERNATIONAL PIPING CODEASME B31T-2015(Revision of ASME B31T-2010)Standard Toughness Requirements for PipingASME Code for Pressure Piping, B31ASME B31T-2015(Revision of ASME B31T-2010)StandardToughnessRequirementsfor PipingASME Code for Pressure Piping, B31AN INTERNATIONAL PIPING CODETwo Park Av
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12、nue, New York, NY 10016-5990Copyright 2016 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword ivCommittee Roster . vCorrespondence With the B31 Committee viSummary of Changes vii1 Introduction . 12 Glossary 13 Low-Temperature Ranges and Requirements .
13、24 Impact Testing Methods and Acceptance Criteria 6Tables3.1-1 Low-Temperature Service Requirements by Material Group 93.2-1 Material Groupings by Material Specification . 204.4.2-1 Charpy Impact Test (Absorbed Energy) Temperature Reduction for Materialor Specimens 0.3 SR 0.3 1 0.9 0.8 0.7 0.6 0.5 0
14、.4 0.3 SR 0.3Carbon SteelsCS 55 . . . Max. possible Charpy 29 48 48 . . . 29 104 48 48 48 48 48 48 48 48 104t 93.7 . . . 49 . . . 49 . . . 49 104 49 43 38 32 27 16 4 48 1049ASMEB31T-2015Table 3.1-1 Low-Temperature Service Requirements by Material Group (Contd)SI Units Note (1)12 3 456 78910112131415
15、161718Material WeldLow- Minimum Minimum Minimum Temp., C, Temp., C, Low-Minimum Material Temperature, C, Without ImpactsNominal Temp., C, Material Temp., C, Weld Without Without Temp., C,for Stress RatiosT-Number Thickness, Service Permitted Without Permitted Impacts Impacts Service LimitGroup mm No
16、tes Limit Temp., C Impacts Temp., C SR 0.3 SR 0.3 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 SR 0.3Carbon Steels (Contd)CS B 10.0 Max. possible Charpy 29 48 48 . . . 29 104 48 48 48 48 48 48 48 48 104t 101.6 . . . 49 . . . 49 . . . 49 104 49 43 38 32 27 16 4 48 104CS C 10.0 Max. possible Charpy 48 48 48 . . . 48
17、 104 48 48 48 48 48 48 48 48 104t 101.6 . . . 49 . . . 49 . . . 49 104 49 43 38 32 27 16 4 48 10410ASMEB31T-2015Table 3.1-1 Low-Temperature Service Requirements by Material Group (Contd)SI Units Note (1)12 3 456 78910112131415161718Material WeldLow- Minimum Minimum Minimum Temp., C, Temp., C, Low-Mi
18、nimum Material Temperature, C, Without ImpactsNominal Temp., C, Material Temp., C, Weld Without Without Temp., C,for Stress RatiosT-Number Thickness, Service Permitted Without Permitted Impacts Impacts Service LimitGroup mm Notes Limit Temp., C Impacts Temp., C SR 0.3 SR 0.3 1 0.9 0.8 0.7 0.6 0.5 0.
19、4 0.3 SR 0.3Carbon Steels (Contd)CS D 12.7 Max. possible Charpy 48 48 48 . . . 48 104 48 48 48 48 48 48 48 48 104t 101.6 . . . 49 . . . 49 . . . 49 104 49 43 38 32 27 16 4 48 104Low-Alloy SteelsLA 320 . . . Max. possible Charpy 48 196 196 48 48 104 N/A . . . . . . . . . . . . . . . . . . . . . N/At
20、0.3 SR 0.3 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 SR 0.3Low-Alloy Steels (Contd)LA 100 . . . Max. possible Charpy 48 73 73 48 48 104 N/A . . . . . . . . . . . . . . . . . . . . . 104t 0.3 SR 0.3 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 SR 0.3Stainless SteelsSS 425 . . . Max. possible Charpy 254 . . . 254 . . . 254 254
21、N/A . . . . . . . . . . . . . . . . . . . . . . . .t 0.1% or not 29 . . . 29 . . . 29 104 N/A . . . . . . . . . . . . . . . . . . . . . 104solution heattreatedSS 325 . . . Max. possible Charpy 198 . . . 198 . . . 254 254 N/A . . . . . . . . . . . . . . . . . . . . . . . .t 0.1% or not 29 . . . 29 .
22、. . 29 104 N/A . . . . . . . . . . . . . . . . . . . . . 104solution heattreatedSS 60 . . . . . . 29 . . . 51 . . . 29 29 N/A . . . . . . . . . . . . . . . . . . . . . 104SS 20 . . . . . . 29 . . . 29 . . . 29 29 N/A . . . . . . . . . . . . . . . . . . . . . 104Nickel AlloysNI 325 . . . . . . 198 .
23、. . 198 . . . 198 198 N/A . . . . . . . . . . . . . . . . . . . . . . . .Cast IronsCI 20 . . . . . . 29 . . . . . . N/P N/P N/P N/A . . . . . . . . . . . . . . . . . . . . . . . .CI 20(A) . . . . . . 29 29 N/A N/P N/P N/P N/A . . . . . . . . . . . . . . . . . . . . . . . .Copper AlloysCU 452 . . . .
24、 . . 269 . . . 269 . . . 269 269 N/A . . . . . . . . . . . . . . . . . . . . . . . .CU 325 . . . . . . 198 . . . 198 . . . 198 198 N/A . . . . . . . . . . . . . . . . . . . . . . . .Aluminum AlloysAL 452 . . . . . . 269 . . . 269 . . . 269 269 N/A . . . . . . . . . . . . . . . . . . . . . . . .Titan
25、ium and Titanium AlloysTI 75 . . . . . . 59 . . . 59 . . . 59 59 N/A . . . . . . . . . . . . . . . . . . . . . . . .Zirconium and Zirconium AlloysZI 75 . . . . . . 59 . . . 59 . . . 59 59 N/A . . . . . . . . . . . . . . . . . . . . . . . .13ASMEB31T-2015Table 3.1-1 Low-Temperature Service Requiremen
26、ts by Material Group (Contd)U.S. Customary Units Note (4)12 3 456 78910112131415161718Material WeldLow- Minimum Minimum Minimum Temp., F, Temp., F, Low-Minimum Material Temperature, F, Without Impacts for StressNominal Temp., F, Material Temp., F, Weld Without Without Temp., F,RatiosT-Number Thickne
27、ss, Service Permitted Without Permitted Impacts Impacts Service LimitGroup in. Notes Limit Temp., F Impacts Temp., F SR 0.3 SR 0.3 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 SR 0.3Carbon SteelsCS 55 . . . Max. possible Charpy 20 55 55 . . . 20 155 55 55 55 55 55 55 55 55 155t 3.6875 . . . 120 . . . 120 . . . 120
28、 155 120 110 100 90 80 60 25 55 15514ASMEB31T-2015Table 3.1-1 Low-Temperature Service Requirements by Material Group (Contd)U.S. Customary Units Note (4)12 3 456 78910112131415161718Material WeldLow- Minimum Minimum Minimum Temp., F, Temp., F, Low-Minimum Material Temperature, F, Without Impacts for
29、 StressNominal Temp., F, Material Temp., F, Weld Without Without Temp., F,RatiosT-Number Thickness, Service Permitted Without Permitted Impacts Impacts Service LimitGroup in. Notes Limit Temp., F Impacts Temp., F SR 0.3 SR 0.3 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 SR 0.3Carbon Steels (Contd)CS B 0.394 Max.
30、possible Charpy 20 55 55 . . . 20 155 55 55 55 55 55 55 55 55 155t 4.00 . . . 120 . . . 120 . . . 120 155 120 110 100 90 80 60 25 55 155CS C 0.394 Max. possible Charpy 55 55 55 . . . 55 155 55 55 55 55 55 55 55 55 155t 4.00 . . . 120 . . . 120 . . . 120 155 120 110 100 90 80 60 25 55 15515ASMEB31T-2
31、015Table 3.1-1 Low-Temperature Service Requirements by Material Group (Contd)U.S. Customary Units Note (4)12 3 456 78910112131415161718Material WeldLow- Minimum Minimum Minimum Temp., F, Temp., F, Low-Minimum Material Temperature, F, Without Impacts for StressNominal Temp., F, Material Temp., F, Wel
32、d Without Without Temp., F,RatiosT-Number Thickness, Service Permitted Without Permitted Impacts Impacts Service LimitGroup in. Notes Limit Temp., F Impacts Temp., F SR 0.3 SR 0.3 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 SR 0.3Carbon Steels (Contd)CS D 0.5 Max possible Charpy 55 55 55 . . . 55 155 55 55 55 55
33、55 55 55 55 155t 4.00 . . . 120 . . . 120 . . . 120 155 120 110 100 90 80 60 25 55 155Low-Alloy SteelsLA 320 . . . Max. possible Charpy 55 320 320 55 55 155 N/A . . . . . . . . . . . . . . . . . . . . . N/At 0.3 SR 0.3 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 SR 0.3Low-Alloy Steels (Contd)LA 150 . . . Max. pos
34、sible Charpy 20 . . . 150 . . . 20 155 N/A . . . . . . . . . . . . . . . . . . . . . 155t 2.5 mmNote (6)LA 100 . . . Max. possible Charpy 55 100 100 55 55 155 N/A . . . . . . . . . . . . . . . . . . . . . 155t 0.3 SR 0.3 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 SR 0.3Low-Alloy Steels (Contd)LA +20 . . . Max. p
35、ossible Charpy 55 55 55 . . . 55 155 N/A . . . . . . . . . . . . . . . . . . . . . 155t 0.1% or not 20 . . . 20 . . . 20 155 N/A . . . . . . . . . . . . . . . . . . . . . 155solution heattreatedSS 325 . . . Max. possible Charpy 325 . . . 325 . . . 425 425 N/A . . . . . . . . . . . . . . . . . . . .
36、. . . .t 0.1% or not 20 . . . 20 . . . 20 155 N/A . . . . . . . . . . . . . . . . . . 155solution heattreatedSS 60 . . . . . . 20 . . . 60 . . . 20 20 N/A . . . . . . . . . . . . . . . . . . . . . 155SS 20 . . . . . . 20 . . . 20 . . . 20 20 N/A . . . . . . . . . . . . . . . . . . . . . 155Nickel Al
37、loysNI 325 . . . . . . 325 . . . 325 . . . 325 325 N/A . . . . . . . . . . . . . . . . . . . . . . . .Cast IronsCI 20 . . . . . . 20 . . . . . . N/P N/P N/P N/A . . . . . . . . . . . . . . . . . . . . . . . .CI 20(A) . . . . . . 20 20 N/A N/P N/P N/P N/A . . . . . . . . . . . . . . . . . . . . . . .
38、 .18ASMEB31T-2015Table 3.1-1 Low-Temperature Service Requirements by Material Group (Contd)U.S. Customary Units Note (4)12 3 456 78910112131415161718Material WeldLow- Minimum Minimum Minimum Temp., F, Temp., F, Low-Minimum Material Temperature, F, Without Impacts for StressNominal Temp., F, Material
39、 Temp., F, Weld Without Without Temp., F,RatiosT-Number Thickness, Service Permitted Without Permitted Impacts Impacts Service LimitGroup in. Notes Limit Temp., F Impacts Temp., F SR 0.3 SR 0.3 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 SR 0.3Copper AlloysCU 452 . . . . . . 452 . . . 452 . . . 452 452 N/A . . .
40、. . . . . . . . . . . . . . . . . . . . .CU 325 . . . . . . 325 . . . 325 . . . 325 325 N/A . . . . . . . . . . . . . . . . . . . . . . . .Aluminum AlloysAL 452 . . . . . . 452 . . . 452 . . . 452 452 N/A . . . . . . . . . . . . . . . . . . . . . . . .Titanium and Titanium AlloysTI 75 . . . . . . 75
41、 . . . 75 . . . 75 75 N/A . . . . . . . . . . . . . . . . . . . . . . . .Zirconium and Zirconium AlloysZI 75 . . . . . . 75 . . . 75 . . . 75 75 N/A . . . . . . . . . . . . . . . . . . . . . . . .GENERAL NOTES:(a) N/A: not applicable.(b) N/P: not permitted.(c) SR: stress ratio per para. 3.6.2.NOTES:
42、(1) All temperatures are in degrees Celsius.(2) This line is applicable if the maximum Charpy specimen obtainable from the product is less than 2.5 mm.(3) This line is applicable if the maximum Charpy specimen obtainable from the product is equal to or greater than 2.5 mm.(4) All temperatures are in
43、 degrees Fahrenheit.(5) This line is applicable if the maximum Charpy specimen obtainable from the product is less than 2.5 mm (0.98 in.).(6) This line is applicable if the maximum Charpy specimen obtainable from the product is equal to or greater than 2.5 mm (0.98 in.).19(15)ASME B31T-2015Table 3.2
44、-1 Material Groupings by Material SpecificationType/Grade/Class/ T-Number ProductSpecification Condition/Temper/UNS Group Material Type Form NotesA36 . . . . . . CS A Carbon steels PL . . .A47 Grade 32510 CI 20(A) Cast irons C . . .A48 Grade 20, 25, 30, 35, 40, 45, 50, 55, 60 CI 20 Cast irons C . .
45、.A53 Grade A (Type F) CS +20(A) Carbon steels P . . .A53 Grade A (except Type F), B CS B Carbon steels P . . .A105 . . . . . . CS 20 Carbon steels FI & FO . . .A106 Grade A, B, C CS B Carbon steels P . . .A126 Class A, B, C CI 20 Cast irons C . . .A134 Grade A283 Gr A, A283 Gr B CS B Carbon steels P
46、 . . .A134 Grade A283 Gr C, D CS A Carbon steels P . . .A134 Grade A285 Gr A, A285 Gr B CS B Carbon steels P . . .A134 Grade A285 Gr C CS A Carbon steels P . . .A134 Grade A36 CS A Carbon steels P . . .A134 Grade A570 Gr 30, 33, 36, 40, 45, 50 CS A Carbon steels P . . .A135 Grade A, B CS B Carbon st
47、eels P . . .A139 Grade A, B, C, D, E CS A Carbon steels P . . .A167 Type 347, 348 SS 325 Stainless steels PL 1A167 Type 347, 348 SS 20 Stainless steels PL 2A167 Type 302B, 308 SS 325 Stainless steels PL 3A167 Type 302B, 308 SS 20 Stainless steels PL 4A167 Type 309, 310 SS 325 Stainless steels PL 1,
48、3, 5A167 Type 309, 310 SS 20 Stainless steels PL 2 or 4, 5A178 Grade A, C CS 20 Carbon steels T . . .A179 . . . . . . CS 20 Carbon steels T . . .A181 Class 60, 70 CS A Carbon steels FI & FO . . .A182 Grade F1, F2, F5, F5a, F9, F11, F12, F21, F22, F91 LA 20 Low-alloy steels FI & FO . . .A182 Grade F10 SS 325 Stainless steels FI & FO 3A182 Grade F10 SS 20 Stainless steels FI & FO 4A182 Grade F304, F304L, F316, F316L SS 425 S
