A131 Grade FH32 shipbuilding structural steel

ABS A131 Grade FH32 shipbuilding steel plate can bear the weather corrosion when using to build ships and vessels. When rolling ABS A131 Grade FH32 steel plate, the steel should be chose as full killed and hot rolling.

A131 FH32 high Strength Chemical Composition

Grade

The Element Max (%)

C

Si

Mn

P

S

Al

N

A131 FH32

0.16

0.1-0.50

0.90-1.6

0.025

0.025

>0.015

0.009

Nb

V

Ti

Cu

Cr

Ni

Mo

0.02-0.05

0.05-0.10

0.02

0.35

0.2

0.4

0.08

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】%

A131 FH32 high strength property

Grade

Mechanical Property

Charpy V Impact Test

Thickness

Yield

Tensile

Elongation

Degree

Energy 1

Energy 2

A131 FH32

mm

Min Mpa

Mpa

Min  %

-60

J

J

t≤50

315

440-590

19%

34

24

50<t≤70

315

440-590

19%

70<t≤100

315

440-590

19%

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

Normalized heat treatment have to be done when the steel billets finished. Low temperature impacting test should be made under minus 60 centigrade.

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