Gangsteel is specialized in supplying RINA extra high strength steel plate in RINA Grade A550. For more information of Grade A550 steel plate, please check them in following:

 

RI/A550 extra high Strength Chemical Composition in Tempering and Quenching

 

Element

RINAA550  Max %

Element

RINAA550  Max %

C

0.21

Ni

0.40

Mn

1.70

Mo

0.08

Si

0.10-0.55

Al

0.020 min

S

0.035

Nb

0.20-0.05

P

0.035

V

0.05-0.10

Cu

0.35

Ti

0.0007-0.05

Cr

0.20

N

 

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】%

 

 

RI/A550 extra high strength property in Tempering and Quenching

 

Grade

Thickness

Yield Strength

Tensile Strength

Elongation

Impact Energy

(mm)

MPa (min)

MPa

% (min)

(KV J) (min)

 

 

 

 

0 degree

RINA A550

8-260

550

670-830

16

37J

Note: the impact energy under less 150mm thickness; longitudinal min impact energy

 

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

 

 

 

Equivalent steel grade of RI/A550

DNV

GL

LR

BV

ABS

NK

KR

CCS

NV A550

GL-A550

LR/AH55

BV/A550

ABS/AQ56

K A56

R A56

CCS/A550

 

 

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

The related steel grade: RI/D550, RI/E550, RI/F550

 

 

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