Gangsteel is specialized in supplying GB712 high strength steel plate GB 712 Grade B . For more information of Grade B steel plate, please check them in following:

 

 

GB 712 Grade B  general Strength Chemical Composition in Tempering and Quenching

Grade

The Element Max (%)

C

Si

Mn

P

S

Al

N

GB 712 Grade B 

0.21

0.50

0.80-1.20

0.035

0.035

-

 

Crack Sensitivity:  Pcm = (C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/15+V/10+5B)%
Carbon Equivalent:  Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%

 

 

 

 

GB 712 Grade B  general strength property in tempering and quenching

Grade

 

Mechanical Property

Charpy V Impact Test

Thickness

Yield

Tensile

Elongation

Degree

Energy 1

Energy 2

GB 712 Grade B 

mm

Min Mpa

Mpa

Min  %

0

J

J

t≤50

235

400-520

22%

20

27

50<t≤70

235

400-520

22%

24

34

70<t≤100

235

400-520

22%

27

41

Note: Energy 1 is transverse impact test, Energy 2 is longitudinal

 

Boiler steel plates| Alloy steel plates| High strength plate| Carbon steel plate| Stainless steel plate

 

 

 

Equivalent steel grade of GB 712 Grade B 

DNV

GL

LR

BV

CCS

NK

KR

RINA

NV B

GL-B

LR/B

BV/B

CCS/B

K B

R B

RI/B

 

 

If you need more stock steel plates in shipbuilding steel plate, please click warehouse sizes.

 

Related grades: GB 712 Grade A| GB 712 Grade D| GB 712 Grade E

 

 

 

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