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发表于 2009-9-13 00:27
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来自: 中国广东广州
Impact Properties of Ordinary-Strength Hull Structural Steel
100 mm (4.0 in.) and Under (2008)
Average Absorbed Energy (1)
J (kgf-m, ft-lbf)
50 mm (2.0 in) < t ≤ 70 mm 70 mm (2.8 in.) < t ≤ 100 mm
t ≤ 50 mm (2.0 in.) (2.8 in.) (4.0 in)
Grade Temperature
°C (°F)
Long’l (2) Transv (2) Long’l (2) Transv (2) Long’l (2) Transv (2)
A 20 (68) — — 34 (3.5, 25) (3) 24 (2.4, 17) (3) 41 (4.2, 30) (3) 27 (28, 20) (3)
B (4) 0 (32) 27 (2.8, 20) 20 (2.0, 14) 34 (3.5, 25) 24 (2.4, 17) 41 (4.2, 30) 27 (28, 20)
D -20 (-4) 27 (2.8, 20) 20 (2.0, 14) 34 (3.5, 25) 24 (2.4, 17) 41 (4.2, 30) 27 (28, 20)
E -40 (-40) 27 (2.8, 20) 20 (2.0, 14) 34 (3.5, 25) 24 (2.4, 17) 41 (4.2, 30) 27 (28, 20)
Notes:
1 The energy shown is minimum for full size specimen. See 2-1-2/ 11.5 for subsize specimen requirements.
2 Either direction is acceptable.
3 Impact tests for Grade A are not required when the material is produced using a fine grain practice and normalized.
4 CVN test requirements for Grade B apply where such test is required by 2-1-2/Table 5.
TABLE 4
Impact Properties of Higher-strength Steel
100 mm (4.0 in.) and Under (2005)
Average Absorbed Energy (1) J (kgf-m, ft-lbf)
Temp
t ≤ 50 mm (2.0 in.)
50 mm (2.0 in.) < t ≤ 70 mm
(2.8 in.)
70 mm (2.8 in.) < t ≤ 100 mm
(4.0 in.)
Grade °C (°F) Long’l (2) Transv (2) Long’l (2) Transv (2) Long’l (2) Transv (2)
AH 32 31 (3.2, 23) 22 (2.3, 16) 38 (3.9, 28) 26 (2.7, 19) 46 (4.7, 34) 31 (3.2, 23)
AH 36 0 (32) 34 (3.5, 25) 24 (2.4, 17) 41 (4.2, 30) 27 (2.8, 20) 50 (5.1, 37) 34 (3.5, 25)
AH 40 39 (4.0, 29) 26 (2.7, 19) 46 (4.7, 34) 31 (3.2, 23) 55 (5.6, 41) 37 (3.8, 27)
DH 32 31 (3.2, 23) 22 (2.3, 16) 38 (3.9, 28) 26 (2.7, 19) 46 (4.7, 34) 31 (3.2, 23)
DH 36 -20 (-4) 34 (3.5, 25) 24 (2.4, 17) 41 (4.2, 30) 27 (2.8, 20) 50 (5.1, 37) 34 (3.5, 25)
DH 40 39 (4.0, 29) 26 (2.7, 19) 46 (4.7, 34) 31 (3.2, 23) 55 (5.6, 41) 37 (3.8, 27)
EH 32 31 (3.2, 23) 22 (2.3, 16) 38 (3.9, 28) 26 (2.7, 19) 46 (4.7, 34) 31 (3.2, 23)
EH 36 -40 (-40) 34 (3.5, 25) 24 (2.4, 17) 41 (4.2, 30) 27 (2.8, 20) 50 (5.1, 37) 34 (3.5, 25)
EH 40 39 (4.0, 29) 26 (2.7, 19) 46 (4.7, 34) 31 (3.2, 23) 55 (5.6, 41) 37 (3.8, 27)
FH 32 31 (3.2, 23) 22 (2.3, 16) 38 (3.9, 28) 26 (2.7, 19) 46 (4.7, 34) 31 (3.2, 23)
FH 36 -60 (-76) 34 (3.5, 25) 24 (2.4, 17) 41 (4.2, 30) 27 (2.8, 20) 50 (5.1, 37) 34 (3.5, 25)
FH 40 39 (4.0, 29) 26 (2.7, 19) 46 (4.7, 34) 31 (3.2, 23) 55 (5.6, 41) 37 (3.8, 27)
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