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9
MECHANICAL PROPERTIES FOR HIGHER STRENGTH STEELS
Impact Test
t
≤
50
50 <t
≤
70
70 <t
≤
100
Long
(3)
Trans
(3)
Long
(3)
Trans
(3)
Long
(3)
Trans
(3)
Average Impact Energy (J) min
Test
Temp.
°C
Grade
Yield
Strength
ReH
Tensile
Strength
Rm
Elongation
(
)
A5 (%)
(N/mm2)
min
(N/mm2)
A32
D32
E32
F32
315
440/570 22 (1)
A36
D36
E36
F36
355
490/630 21 (1)
A40
D40
E40
F40
390
510/660 20 (1)
0 31(3) 22(3)
38
26
46
31
–20
31
22
38
26
46
31
–40
31
22
38
26
46
31
-60
31
22
38
26
46
31
0 34(3) 24(3)
41
27
50
34
–20
34
24
41
27
50
34
–40
34
24
41
27
50
34
-60
34
24
41
27
50
34
0
39
26
46
31
55
37
-20
39
26
46
31
55
37
-40
39
26
46
31
55
37
-60
39
26
46
31
55
37
t: thickness (mm)
NOTES:
1. For full thickness flat tensile test specimens with a width of 25mm and a gauge length of 200 mm the elongation is to comply with the
following minimum values:
2. See paragraphW11.6.3.
3. For Grades A32 and A36 steels a relaxation in the number of impact tests for acceptance purposes may be permitted by special agreement
with the Classification Society provided that satisfactory results are obtained from occasional check tests.
i. Minimum average energy values are specified for Charpy V-notch impact test specimens taken in either the longitudinal or transverse directions
(seeW11.12.2). Generally only longitudinal test specimens need to be prepared and tested except for special applications where transverse test
specimens may be required by the purchaser or the Classification Society.Transverse test results are to be guaranteed by the supplier.
Thickness mm Grade
> 5 > 10 > 15 > 20 > 25 > 30 > 40
≤
5
≤
10
≤
15
≤
20
≤
25
≤
30
≤
40
≤
50
A32, D32, E32 & F32 14
16 17
18
19 20 21 22
Elongation % A36, D36, E36 & F36 13 15 16 17 18 19 20 21
A40, D40, E40 & F40 12 14 15 16 17 18 19 20
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