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International
Standard
ISO 11782-2
First edition
Corrosion of metals and alloys —
1998-07-15
Corrosion fatigue testing —
AMENDMENT 1
Part 2:
2024-05
Crack propagation testing using
precracked specimens
AMENDMENT 1
Corrosion des métaux et alliages — Essais de fatigue-corrosion —
Partie 2: Essais d'amorce de rupture sur des éprouvettes
préfissurées
AMENDEMENT 1
Reference number
ISO 11782-2:1998/Amd.1:2024(en) © ISO 2024
ISO 11782-2:1998/Amd.1:2024(en)
© ISO 2024
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ii
ISO 11782-2:1998/Amd.1:2024(en)
Foreword
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iii
ISO 11782-2:1998/Amd.1:2024(en)
Corrosion of metals and alloys — Corrosion fatigue testing —
Part 2:
Crack propagation testing using precracked specimens
AMENDMENT 1
4.2.2
Move Table 1 at the end of last paragraph, as follows:
Specimen geometries which are frequently used for corrosion fatigue crack growth rate testing include the
following:
a) three-point single edge notch bend (SENB3);
b) four-point single edge notch bend (SENB4);
c) compact tension (CT);
d) centre-cracked tension (CCT).
Details of standard specimen designs for each of these types of specimen are given in Figures 3 to 6 and
permitted notch geometries are given in Figure 7. Suitable machining tolerances are given in Table 1.
Table 1 — Dimensions of specimens with tolerances
Dimension Tolerances Surface finish, squareness and parallelism
L Surfaces shall be perpendicular and parallel as applicable to
within 0,002 W (Total indicator reading)
G
H Surface finish of faces perpendicular to the line of the notch root
to be Ra 0,8 µm
±0,01 W
F
F ±0,004 W Notch to be equidistant about centre-line to within 0,01 W
Holes to be square to faces within ±0,007 5 W and parallel
D +0,004 W within ±0,000 5 W
Surface finish Ra 0,4 µm
4.2.3
Move Table 2 to Table 5 at the end of last paragraph, as follows:
The values of Y appropriate to the four specimen geometries discussed above are given in Tables 2 to 5.
ISO 11782-2:1998/Amd.1:2024(en)
Table 2 — Stress intensity factor function values for SENB3 specimens
a/W 0,000 0,001 0,002 0,003 0,004 0,005 0,006 0,007 0,008 0,009
0,10 3,39 3,40 3,42 3,43 3,45 3,46 3,48 3,49 3,50 3,52
0,11 3,53 3,55 3,56 3,58 3,59 3,60 3,62 3,63 3,64 3,66
0,12 3,67 3,69 3,70 3,71 3,73 3,74 3,75 3,77 3,78 3,79
0,13 3,81 3,82 3,83 3,85 3,86 3,87 3,89 3,90 3,91 3,93
0,14 3,94 3,95 3,96 3,98 3,99 4,00 4,02 4,03 4,04 4,05
0,15 4,07 4,08 4,09 4,11 4,12 4,13 4,14 4,16 4,17 4,18
0,16 4,19 4,21 4,22 4,23 4,25 4,26 4,27 4,28 4,30 4,31
0,17 4,32 4,33 4,35 4,36 4,37 4,38 4,40 4,41 4,42 4,43
0,18 4,45 4,46 4,47 4,48 4,50 4,51 4,52 4,54 4,55 4,56
0,19 4,57 4,59 4,60 4,61 4,62 4,64 4,65 4,66 4,67 4,69
0,20 4,70 4,71 4,72 4,74 4,75 4,76 4,78 4,79 4,80 4,81
0,21 4,83 4,84 4,85 4,87 4,88 4,89 4,90 4,92 4,93 4,94
0,22 4,96 4,97 4,98 5,00 5,01 5,02 5,03 5,05 5,06 5,07
0,23 5,09 5,10 5,11 5,13 5,14 5,15 5,17 5,18 5,19 5,21
0,24 5,22 5,23 5,25 5,26 5,27 5,29 5,30 5,32 5,33 5,34
0,25 5,36 5,37 5,38 5,40 5,41 5,43 5,44 5,45 5,47 5,48
0,26 5,49 5,51 5,52 5,54 5,55 5,57 5,58 5,59 5,61 5,62
0,27 5,64 5,65 5,67 5,68 5,69 5,71 5,72 5,74 5,75 5,77
0,28 5,78 5,80 5,81 5,83 5,84 5,86 5,87 5,89 5,90 5,92
0,29 5,93 5,95 5,96 5,98 5,99 6,01 6,02 6,04 6,05 6,07
0,30 6,08 6,10 6,12 6,13 6,15 6,16 6,18 6,20 6,21 6,23
0,31 6,24 6,26 6,28 6,29 6,31 6,32 6,34 6,36 6,37 6,39
0,32 6,41 6,42 6,44 6,46 6,47 6,49 6,51 6,52 6,54 6,56
0,33 6,57 6,59 6,61 6,63 6,64 6,66 6,68 6,69 6,71 6,73
0,34 6,75 6,77 6,78 6,80 6,82 6,84 6,85 6,87 6,89 6,91
0,35 6,93 6,95 6,96 6,98 7,00 7,02 7,04 7,06 7,08 7,09
0,36 7,11 7,13 7,15 7,17 7,19 7,21 7,23 7,25 7,27 7,29
0,37 7,31 7,33 7,34 7,36 7,38 7,40 7,42 7,44 7,46 7,48
0,38 7,51 7,53 7,55 7,57 7,59 7,61 7,63 7,65 7,67 7,69
0,39 7,71 7,73 7,75 7,78 7,80 7,82 7,84 7,86 7,88 7,91
0,40 7,93 7,95 7,97 7,99 8,02 8,04 8,06 8,08 8,11 8,13
0,41 8,15 8,17 8,20 8,22 8,24 8,27 8,29 8,31 8,34 8,36
0,42 8,38 8,41 8,43 8,46 8,48 8,50 8,53 8,55 8,58 8,60
0,43 8,63 8,65 8,68 8,70 8,73 8,75 8,78 8,80 8,83 8,85
0,44 8,88 8,90 8,93 8,96 8,98 9,01 9,04 9,06 9,09 9,12
0,45 9,14 9,17 9,20 9,22 9,25 9,28 9,31 9,33 9,36 9,39
0,46 9,42 9,45 9,47 9,50 9,53 9,56 9,59 9,62 9,65 9,68
0,47 9,70 9,73 9,76 9,79 9,82 9,85 9,88 9,91 9,94 9,97
0,48 10,01 10,04 10,07 10,10 10,13 10,16 10,19 10,22 10,26 10,29
0,49 10,32 10,35 10,38 10,42 10,45 10,48 10,52 10,55 10,58 10,62
0,50 10,65 10,68 10,72 10,75 10,79 10,82 10,86 10,89 10,93 10,96
0,51 11,00 11,03 11,07 11,10 11,14 11,18 11,21 11,25 11,29 11,32
0,52 11,36 11,40 11,43 11,47 11,51 11,55 11,59 11,63 11,68 11,70
0,53 11,74 11,78 11,82 11,86 11,90 11,94 11,98 12,02 12,06 12,10
ISO 11782-2:1998/Amd.1:2024(en)
TTabablele 2 2 ((ccoonnttiinnueuedd))
a/W 0,000 0,001 0,002 0,003 0,004 0,005 0,006 0,007 0,008 0,009
0,54 12,15 12,19 12,23 12,27 12,31 12,35 12,40 12,44 12,48 12,53
0,55 12,57 12,61 12,66 12,70 12,75 12,79 12,84 12,88 12,92 12,97
0,56 13,02 13,06 13,11 13,16 13,20 13,25 13,30 13,35 13,39 13,44
0,57 13,49 13,54 13,59 13,64 13,69 13,74 13,79 13,84 13,89 13,98
0,58 13,99 14,04 14,10 14,15 14,20 14,25 14,31 14,36 14,41 14,47
0,59 14,52 14,58 14,63 14,69 14,74 14,80 14,86 14,91 14,97 15,03
0,60 15,09 15,14 15,20 15,26 15,32 15,38 15,44 15,50 15,56 15,62
0,61 15,69 15,75 15,81 15,87 15,94 16,00 16,06 16,13 16,19 16,26
0,62 16,32 16,39 16,46 16,52 16,59 16,66 16,73 16,80 16,86 16,93
0,63 17,00 17,08 17,15 17,22 17,29 17,36 17,44 17,51 17,58 17,60
0,64 17,73 17,81 17,88 17,96 18,04 18,12 18,19 18,27 18,25 18,43
0,65 18,51 18,59 18,67 18,76 18,84 18,92 19,01 19,09 19,18 19,26
0,66 19,35 19,44 19,52 19,61 19,70 19,79 19,85 19,97 20,06 20,15
0,67 20,25 20,34 20,44 20,53 20,63 20,72 20,82 20,92 21,02 21,12
0,68 21,22 21,32 21,42 21,52 21,63 21,73 21,84 21,94 22,05 22,16
0,69 22,27 22,38 22,49 22,60 22,71 22,82 22,94 23,05 23,17 23,28
0,70 23,40 23,52 23,64 23,76 23,88 24,01 24,13 24,25 24,38 24,51
0,71 24,64 24,76 24,90 25,03 25,16 25,29 25,43 25,56 25,70 25,84
0,72 25,98 26,12 26,26 26,41 26,55 26,70 26,85 27,00 27,15 27,30
0,73 27,45 27,61 27,76 27,92 28,08 28,24 28,40 28,56 28,73 28,90
0,74 29,06 29,23 29,41 29,53 29,75 29,93 30,11 30,29 30,47 30,65
0,75 30,84 31,03 31,22 31,41 31,60 31,80 31,99 32,19 32,39 32,60
0,76 32,80 33,01 33,22 33,43 33,65 33,86 34,08 34,31 34,53 34,76
0,77 34,98 35,22 35,45 35,69 35,92 36,17 36,41 36,66 36,91 37,16
0,78 37,42 37,67 37,94 38,20 38,47 38,74 39,01 39,29 39,57 39,85
0,79 40,14 40,43 40,73 41,02 41,32 41,63 41,94 42,25 42,57 42,89
0,80 43,21 43,54 43,87 44,21 44,55 44,90 45,25 45,60 45,96 46,33
0,81 46,70 47,07 47,45 47,83 48,22 48,62 49,02 49,42 49,83 50,25
0,82 50,67 51,10 51,54 51,98 52,43 52,88 53,34 53,81 54,28 54,76
0,83 55,25 55,74 56,25 56,76 57,27 57,80 58,33 58,88 59,43 59,98
0,84 60,55 61,13 61,72 62,31 62,92 65,53 64,16 64,79 65,44 66,09
0,85 66,76 67,44 68,13 68,83 69,55 70,27 71,01 71,77 72,53 73,31
0,86 74,11 74,91 75,74 76,57 77,43 78,30 79,18 80,09 81,01 81,94
0,87 82,90 83,87 84,87 85,88 86,91 87,97 89,04 90,14 91,26 92,40
0,88 93,57 94,76 95,98 97,23 98,50 99,80 — — — —
0,89 — — — — — — — — — —
1/2
Tabulated values = (KB/P) × W
Span = 4 W
[1]
Closed form approximation :
12/ 2
61αα ,,99 −−()12αα15 −+39,,32 7α
()
Y =
32/
()12+−αα()1
where α = a/W
Applicability: all values of a/W
ISO 11782-2:1998/Amd.1:2024(en)
Table 3 — Stress intensity factor function values for SENB4 specimens
a/W 0,000 0,001 0,002 0,003 0,004 0,005 0,006 0,007 0,008 0,009
0,10 1,75 1,76 1,77 1,77 1,78 1,79 1,80 1,81 1,81 1,82
0,11 1,83 1,84 1,84 1,85 1,86 1,87 1,87 1,88 1,89 1,90
0,12 1,90 1,91 1,92 1,93 1,93 1,94 1,95 1,96 1,96 1,97
0,13 1,98 1,99 1,99 2,00 2,01 2,01 2,02 2,03 2,04 2,04
0,14 2,05 2,06 2,06 2,07 2,08 2,09 2,09 2,10 2,11 2,11
0,15 2,12 2,13 2,13 2,14 2,15 2,15 2,16 2,17 2,18 2,18
0,16 2,19 2,20 2,20 2,21 2,22 2,22 2,23 2,24 2,24 2,25
0,17 2,26 2,26 2,27 2,28 2,29 2,29 2,30 2,31 2,31 2,32
0,18 2,33 2,33 2,34 2,35 2,35 2,36 2,37 2,37 2,38 2,39
0,19 2,39 2,40 2,41 2,41 2,42 2,43 2,44 2,44 2,45 2,46
0,20 2,46 2,47 2,48 2,48 2,49 2,50 2,50 2,51 2,52 2,52
0,21 2,53 2,54 2,54 2,55 2,56 2,57 2,57 2,58 2,59 2,59
0,22 2,60 2,61 2,61 2,62 2,63 2,64 2,64 2,65 2,66 2,66
0,23 2,67 2,68 2,68 2,69 2,70 2,71 2,71 2,72 2,73 2,73
0,24 2,74 2,75 2,76 2,76 2,77 2,78 2,78 2,79 2,80 2,81
0,25 2,81 2,82 2,83 2,84 2,84 2,85 2,86 2,86 2,87 2,88
0,26 2,89 2,89 2,90 2,91 2,92 2,92 2,93 2,94 2,95 2,95
0,27 2,96 2,97 2,98 2,98 2,99 3,00 3,01 3,02 3,02 3,03
0,28 3,04 3,05 3,05 3,06 3,07 3,08 3,09 3,09 3,10 3,11
0,29 3,12 3,12 3,13 3,14 3,15 3,16 3,16 3,17 3,18 3,19
0,30 3,20 3,21 3,21 3,22 3,23 3,24 3,25 3,25 3,26 3,27
0,31 3,28 3,29 3,30 3,31 3,31 3,32 3,33 3,34 3,35 3,36
0,32 3,36 3,37 3,38 3,39 3,40 3,41 3,42 3,43 3,43 3,44
0,33 3,45 3,46 3,47 3,48 3,49 3,50 3,51 3,52 3,52 3,53
0,34 3,54 3,55 3,56 3,57 3,58 3,59 3,60 3,61 3,62 3,63
0,35 3,64 3,65 3,65 3,66 3,67 3,68 3,69 3,70 3,71 3,72
0,36 3,73 3,74 3,75 3,76 3,77 3,78 3,79 3,80 3,81 3,82
0,37 3,83 3,84 3,85 3,86 3,87 3,88 3,89 3,90 3,91 3,92
0,38 3,93 3,94 3,96 3,97 3,98 3,99 4,00 4,01 4,02 4,03
0,39 4,04 4,05 4,06 4,07 4,08 4,10 4,11 4,12 4,13 4,14
0,40 4,15 4,16 4,17 4,19 4,20 4,21 4,22 4,23 4,24 4,25
0,41 4,27 4,28 4,29 4,30 4,31 4,33 4,34 4,35 4,36 4,37
0,42 4,39 4,40 4,41 4,42 4,44 4,45 4,46 4,47 4,49 4,50
0,43 4,51 4,52 4,54 4,55 4,56 4,57 4,59 4,60 4,61 4,63
0,44 4,64 4,65 4,67 4,68 4,69 4,71 4,72 4,73 4,75 4,76
0,45 4,77 4,79 4,80 4,82 4,83 4,84 4,86 4,87 4,89 4,90
0,46 4,92 4,93 4,94 4,96 4,97 4,99 5,00 5,02 5,03 5,05
0,47 5,06 5,08 5,09 5,11 5,12 5,14 5,15 5,17 5,19 5,20
0,48 5,22 5,23 5,25 5,26 5,28 5,30 5,31 5,33 5,35 5,36
0,49 5,38 5,39 5,41 5,43 5,44 5,46 5,48 5,50 5,51 5,53
0,50 5,55 5,56 5,58 5,60 5,62 5,63 5,65 5,67 5,69 5,71
0,51 5,72 5,74 5,76 5,78 5,80 5,82 5,83 5,85 5,87 5,89
0,52 5,91 5,93 5,95 5,97 5,99 6,01 6,03 6,05 6,07 6,09
0,53 6,11 6,13 6,15 6,17 6,19 6,21 6,23 6,25 6,27 6,29
ISO 11782-2:1998/Amd.1:2024(en)
TTabablele 3 3 ((ccoonnttiinnueuedd))
a/W 0,000 0,001 0,002 0,003 0,004 0,005 0,006 0,007 0,008 0,009
0,54 6,31 6,33 6,35 6,38 6,40 6,42 6,44 6,46 6,48 6,51
0,55 6,53 6,55 6,57 6,60 6,62 6,64 6,67 6,69 6,71 6,73
0,56 6,76 6,78 6,81 6,83 6,85 6,88 6,90 6,93 6,95 6,98
0,57 7,00 7,03 7,05 7,08 7,10 7,13 7,15 7,18 7,20 7,23
0,58 7,26 7,28 7,31 7,34 7,36 7,39 7,42 7,45 7,47 7,50
0,59 7,53 7,56 7,59 7,61 7,64 7,67 7,70 7,73 7,78 7,79
0,60 7,82 7,85 7,88 7,91 7,94 7,97 8,00 8,03 8,06 8,09
0,61 8,13 8,16 8,19 8,22 8,25 8,29 8,32 8,35 8,39 8,42
0,62 8,45 8,49 8,52 8,56 8,59 8,62 8,68 8,69 8,73 8,77
0,63 8,80 8,84 8,87 8,91 8,95 8,99 9,02 9,06 9,10 9,14
0,64 9,18 9,21 9,25 9,29 8,33 9,37 9,41 9,45 9,49 9,53
0,65 9,58 9,62 9,66 9,70 9,74 9,79 9,83 9,87 9,92 9,96
0,66 10,00 10,05 10,09 10,14 10,18 10,23 10,28 10,32 10,37 10,42
0,67 10,47 10,51 10,56 10,61 10,66 10,71 10,76 10,81 10,86 10,91
0,68 10,96 11,02 11,07 11,12 11,17 11,23 11,28 11,34 11,39 11,45
0,
...