LR, ABS, NK, GL, DNV, BV, KR, RINA, CCS Grade B Shipbuilding steel plate

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LR, ABS, NK, GL, DNV, BV, KR, RINA, CCS Grade B Shipbuilding steel plate

LR, ABS, NK, GL, DNV, BV, KR, RINA, CCS Grade B Shipbuilding steel plate

LR, ABS, NK, GL, DNV, BV, KR, RINA, CCS Grade B Shipbuilding steel plate Capable Classification Society Quality Authentication from LR, ABS, NK, GL, DNV, BV, KR, RINA, CCS Grade B steel,ASTM A131 Grade B steel plate is a kind of shipbuilding steel which is mainly for shipbuilding and platfor

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LR, ABS, NK, GL, DNV, BV, KR, RINA, CCS Grade B Shipbuilding steel plate

Capable Classification Society Quality Authentication from LR, ABS, NK, GL, DNV, BV, KR, RINA, CCS Grade B steel,ASTM A131 Grade B steel plate is a kind of shipbuilding steel which is mainly for shipbuilding and platform. Grade B shipbuilding steel plate is a common tensile strength steel. As a professional A131 Grade B shipbuilding steel plate exporter, Bebon international can supply high quality Grade B steel plate in most competitive price. ASTM A 131 shipbuilding steel plates can be used in the manufacture of the ship's hull structure whose weight is below 10000 tons.

Grade B shipbuilding steel plate specification:
Thickness: 6mm-200mm, Width: 1500mm-4000mm, Length: 6000mm-180000mm

Grade B steel  Chemical Composition


Grade

C max

Si max

Mn

P max

S max

Grade B

0.21

0.35

 0.80-1.20

0.035

0.035

Note: CE: C+1/6Mn ≤ 0.40% Cu ≤ 0.35%,Ni ≤ 0.30%≤

Grade B steel  Mechanical Property


Grade

Rm
(MPa)

Re(MPa) min

A% min

Akv/J min

Grade B

400-520

235

22

E.T °C

Thickness (mm)

0

 50

>50-70

>70-100

L

C

L

C

L

C

27

20

34

24

41

27

 Note: In the list , Rm: .tensile strength,Re: Yield strength,A%: elongation, E.T: experimental temperature,L: lengthways, C: crosswise.

Grade B steel Condition Of Delivery


Grade

category

The thickness of steel

≤ 12

>12.5-25

>25-35

>35-50

>50-100

Grade B

Plate/sheet

 A(-)

A(50)

N(50),TM(50)
CR(25)
AR*(25)

Profile steel

-

Note: 1. delivery condition: A =Any ; N=Normalized ; CR=Control Rolled ; TM=TMPC, Temperature - deformation control rolling; AR*= Can be hot rolled with the agreement of Classification Society ; CR*=Can be control rolled with the agreement of Classification Society .
2.  The Figure in the ( ) means the sampling volume to do the impact test, the unit is Ton.(-) means without impact test.

 

Grade B steel Contrast in the different standards


ASTM A131M

TOCT 5521

JIS G3106

BS LR

GB712

Grade B

Grade B

SM400B
SM400C

Grade B

Grade B

Grade B steel plate Available Specification


variety 
Thickness (mm) Width (mm) Longth/ inner diameter (mm)
Shipbuilidng plate cutting edges 6~200 1500~3000 3000~15000
non- cutting edges 1300~3000
Shipbuilidng coil cutting edges 1.2~19 1500~2000 760+20~760-70
non-cutting edges 1510~2010

Grade B steel plate theoretical weight


Thickness (mm) 
theoretical weight Thickness (mm) theoretical weight
Kg/ft2 Kg/m2 Kg/ ft2 Kg/m2
6 4.376 47.10 25 18.962 196.25
7 5.105 54.95 26 20.420 204.10
8 5.834 62.80 28 21.879 219.80
10 7.293 78.50 30 23.337 235.50
11 8.751 86.35 32 25.525 251.20
12 10.21 94.20 34 26.254 266.90
14 10.939 109.90 35 27.713 274.75
16 11.669 125.60 40 29.172 314.00
18 13.127 141.30 45 32.818 353.25
20 14.586 157.00 48 35.006 376.80
22 16.044 172.70 50 36.464 392.50
24 18.232 188.40      

Grade B steel plate dimensional deviation


nominal thickness(mm)
The thickness deviation with following width (mm)
≤1200 >1200~1500 >1500~1800 >1800
>6.0~8.0 ±0.29 ±0.30 ±0.31 ±0.35
>8.0~10.0 ±0.32 ±0.33 ±0.34 ±0.35
>10.0~12.0 ±0.35 ±0.36 ±0.37 ±0.43

nominal thickness(mm)

 

minus deviation (mm) The thickness deviation with following width (mm)
> 1000 ~1200 > 1200 ~1500 > 1500 ~1700 > 1700 ~1800 > 1800 ~2000 > 2000 ~2300 > 2300 ~2500 > 2500 ~2600 2600 ~2800 > 2800 ~3000
>12~25 -0.8 +0.2 +0.2 +0.3 +0.4 +0.6 +0.8 +0.8 +1.0 +1.1 +1.2
>25~30 -0.9 +0.2 +0.2 +0.3 +0.4 +0.6 +0.8 +0.9 +1.0 +1.1 +1.2
>30~34 -1.0 +0.2 +0.3 +0.3 +0.4 +0.6 +0.8 +0.9 +1.0 +1.2 +1.3
>34~40 -1.1 +0.3 +0.4 +0.5 +0.6 +0.7 +0.9 +1.0 +1.1 +1.3 +1.4
>40~45 -1.2 +0.4 +0.5 +0.6 +0.7 +0.8 +1.0 +1.1 +1.2 +1.4 +1.5
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