Andres Driesholten

AH32

LR, ABS, NK, GL, DNV, BV, KR, RINA, CCS AH32 Shipbuilding steel plate

Capable Classification Society Quality Authentication from LR, ABS, NK, GL, DNV, BV, KR, RINA, CCS,Ah32 steel plate is used for shipbuiling&platform.The shipbuilding steel plate grade AH32 is the high tensile strength steel. Ah32 shipbuilding steel  has good toughness properties, higher strength,strong corrosion-resistance,the processing properties,and welding properties. ASTM A131 Ah32 steel plate  can be used in the manufacture of the ship's hull structure whose weight is more than 10000 tons.

AH32 Shipbuilding steel plate specification:
Thickness: 4mm to 260mm, 
Width: 1200mm to 4000mm
Length: 3000mm to 18000mm.

Ah32 steel plate Chemical Composition %


Grade

C
max

Si 
max

Mn

P
max


max

Als 
min

Ti
max

Cu
max

Cr
max

Ni
max

Mo
max

AH32

0.18

0.50

0.90-1.60

0.035

0.035

0.015

0.02

0.35

0.20

0.40

0.08

Note: Generally speaking CE will be ≤ 0.40%. If the delivery condition is TMPC, the CE will be : ≤ 0.36% (thickness ≤ 50mm),≤0.38%( when the thickness >50-100). Ceq% =(C+Mn)/6+(Cr+Mo+V)/5+(Ni+Cu)/15.

Ah32 steel plate Mechanical Property


Grade

Rm
(MPa)

Re(MPa) min

A% min

Akv/J min

AH32

440-570

315

22

E.T °C

Thickness (mm)

0

 50

>50-70

>70-100

L

C

L

C

L

C

31

22

38

26

46

31

 Note: In the list , Rm: .tensile strength,Re: Yield strength,A%: elongation, E.T: experimental temperature,L: lengthways, C: crosswise.

Ah32 steel plate Condition Of Delivery


Grade

Fine grains elements

category

The thickness of steel

≤ 12

>12.5-20

>20-25

>25-35

>35-50

>50-100

AH32

Nb+V or V

Plate/
sheet

A(50)

N(50),CR(50),TM(50)

N(50),CR(25),TM(50)

Profile steel

N(50),CR(50),TM(50),AR*(25)

-

Al or Al+Ti

Plate/
sheet

A(50)

AR*(25)

-

N(50),CR(50),TM(50)

N(50),CR(25),TM(50)

Profile steel

A(50)

N(50),CR(50),TM(50),AR*(25)

-

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.  

Contrast in the different standard


ASTM A131M

TOCT 5521

JIS G3106

BS LR

GB712

AH32

A32

SM490B
SM490C

AH32

A32

Ah32 steel plate Available Specification


variety 
Thickness (mm) Width (mm) Longth/ inner diameter (mm)
Shipbuilidng plate cutting edges 6~200 1500~3000 3000~15000
non- cutting edges 1300~3000
Shipbuilidng coil cutting edges 1.2~19 1500~2000 760+20~760-70
non-cutting edges 1510~2010

Ah32 steel plate theoretical weight


Thickness (mm) 
theoretical weight Thickness (mm) theoretical weight
Kg/ft2 Kg/m2 Kg/ ft2 Kg/m2
6 4.376 47.10 25 18.962 196.25
7 5.105 54.95 26 20.420 204.10
8 5.834 62.80 28 21.879 219.80
10 7.293 78.50 30 23.337 235.50
11 8.751 86.35 32 25.525 251.20
12 10.21 94.20 34 26.254 266.90
14 10.939 109.90 35 27.713 274.75
16 11.669 125.60 40 29.172 314.00
18 13.127 141.30 45 32.818 353.25
20 14.586 157.00 48 35.006 376.80
22 16.044 172.70 50 36.464 392.50
24 18.232 188.40      

Ah32 steel plate dimensional deviation


nominal thickness(mm)
The thickness deviation with following width (mm)
≤1200 >1200~1500 >1500~1800 >1800
>6.0~8.0 ±0.29 ±0.30 ±0.31 ±0.35
>8.0~10.0 ±0.32 ±0.33 ±0.34 ±0.35
>10.0~12.0 ±0.35 ±0.36 ±0.37 ±0.43

nominal thickness(mm)

 

minus deviation (mm) The thickness deviation with following width (mm)
> 1000 ~1200 > 1200 ~1500 > 1500 ~1700 > 1700 ~1800 > 1800 ~2000 > 2000 ~2300 > 2300 ~2500 > 2500 ~2600 2600 ~2800 > 2800 ~3000
>12~25 -0.8 +0.2 +0.2 +0.3 +0.4 +0.6 +0.8 +0.8 +1.0 +1.1 +1.2
>25~30 -0.9 +0.2 +0.2 +0.3 +0.4 +0.6 +0.8 +0.9 +1.0 +1.1 +1.2
>30~34 -1.0 +0.2 +0.3 +0.3 +0.4 +0.6 +0.8 +0.9 +1.0 +1.2 +1.3
>34~40 -1.1 +0.3 +0.4 +0.5 +0.6 +0.7 +0.9 +1.0 +1.1 +1.3 +1.4
>40~45 -1.2 +0.4 +0.5 +0.6 +0.7 +0.8 +1.0 +1.1 +1.2 +1.4 +1.5

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