Gangsteel is specialized in supplying KR general strength steel plate in KR Grade R B. For more information of Grade R B steel plate, please check them in following:

 

 

 

KR/R B general Strength Chemical Composition

Grade

The Element Max (%)

C

Si

Mn

P

S

AL

KR/R B

0.21

0.35

0.8

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】%

 

 

 

 

 

KR/R B generalstrength property

Grade

 

Mechanical Property

Charpy V Impact Test

Thickness

Yield

Tensile

Elongation

Degree

Energy 1

Energy 2

KR/R B

mm

Min Mpa

Mpa

Min  %

0

 

-

t≤50

235

400-520

22

27

20

50<t≤70

34

24

70<t≤100

41

27

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

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

 

 

 

 

 

 

Equivalent steel grade of KR/R 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.

The related steel grade  GL-A  GL-B GL-D GL-E

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