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Grade B Shipbuilding steel plate

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

We keep more than 10000 ton Grade B ship steel spot monthly, so we have much confidence im supplying high qualfied A131 Grade B steel products for our customers. Any need of Grade B shipbuilding steel , please contact us by calling or emailing. We will give you prompt answer.

Contact:
Tell: 0086-371-86151827, 0086-371-86011881
E-mail:sales3@bebonchina.com
Skype: bebon.abby


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