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NK F40

NK F40   

NK F40 Shipbuilding steel plate
The NK F40 steel plate is the mainly kinds of steel for shipbuilding and oil platform, theshipbuilding grade NK F40 steel can be used in the manufacture of the ship's hull structure, whose weight is more then 10000 tons. Shipbuilding grade NK F40 is the high tensile strength steel,  NK F40 steel for shipbuilding and oil platform must be good toughness properties, higher strength, strong corrosion-resistance, the processing properties, and welding properties.

NK F40 steel plate Chemical Composition %



Grade

C max

Si max

Mn

P max

S max

Als min

Ti max

Cu max

Cr
max

Ni
max

Mo
max

Nb

V

N max

NK F40

0.16

0.50

0.90-1.60

0.025

0.025

0.015

0.02

0.35

0.20

0.80

0.08

0.02-0.05

0.05-0.10

0.009

Note: Generally speaking CE will be ≤ 0.40%. If the delivery condition is TMPC, the CE will be : ≤ 0.40% (thickness ≤ 50mm). Ceq% =(C+Mn)/6+(Cr+Mo+V)/5+(Ni+Cu)/15.
NK F40 steel plate Mechanical Property



Grade

Rm
(MPa)

Re(MPa) min

A% min

Akv/J min

NK F40

510-660

390

20

E.T °C

Thickness (mm)

-40

≤ 50

>50-70

>70-100

L

C

L

C

L

C

41

27

-

Note: In the list , Rm: .tensile strength,Re: Yield strength,A%: elongation, E.T: experimental temperature,L: lengthways, C: crosswise.
NK F40 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

NK F40

Any

Plate/sheet

N,TM,Q&T

-

Profile steel

N(25),TM(25),Q&T(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.

Key Words: Supply NK F40 steel for shipbuilding, NK F40 steel for shipbuilding manufacturer,
NK F40 steel for shipbuilding suppliers, manufacture NK F40 steel for shipbuilding,
NK F40 steel for shipbuilding warehouser

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