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LR Grade D shipbuilding steel plate

Steel Standard:LR (Lloyd’s Register)

Rolling Type:Shipbuilding steel plate,Common strength ship plate

Thickness:3mm-300mm

Width:1200mm-4200mm

Length:3000mm-18000mm

Heat Treatment:As Rolled/Control-rolled/TMCP/Normalised

LR Grade D Shipbuilding Steel Plate Supplier

LR D steel is a kind of hot rolled general tensile strength steel. General-strength LR shipbuilding steel comes in 12 grades of 3 strengths,Grade D is one of the grades. The LR grade D steel plates have yield strength of 235 MPa, and ultimate tensile strength of 400-520 MPa. All the LRA shipbuilding Steel offered by Gnee can be certificated by Lloyd’s Register of Shipping (LR).

GNEE STEEL keeps enough quantity hot rolled and cold rolled LR Grade D, LR/D shipbuilding steel in stock each month. We can meet our customer’s any quantity request. Based on these stock source, our advantage industry spread into steel process like : cutting ( any size and any shape ) drilling, welding, milling, machining and steel structure.

 

Specification Parameters
Basic Information

LR GRADE D general Strength Chemical Composition

Grade

The Element Max (%)

C

Si

Mn

P

S

Al

N

LR GRADE D

0.21

0.10-0.35

0.6

0.035

0.035

0.015

Nb

V

Ti

Cu

Cr

Ni

Mo

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】%

 

LR GRADE D general strength property

Grade

Mechanical Property

Charpy V Impact Test

Thickness

Yield

Tensile

Elongation

Degree

Energy 1

Energy 2

LR GRADE D

mm

Min Mpa

Mpa

Min  %

-20

J

J

t≤50

235

400-520

22%

20

27

50<t≤70

235

400-520

22%

24

34

70<t≤100

235

400-520

22%

27

41

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

 

Equivalent steel grade of LR GRADE D

DNV

GL

ABS

BV

CCS

NK

KR

RINA

NV D

GL-D

AB/D

BV/D

CCS/D

K D

R D

RI/D

Service Support
LR Grade D shipbuilding steel plate

Technical Requirements & Additional Services for LR Grade D Steel Plate:

♦ High tension test
♦ Z-Test (Z15,Z25,Z35)
♦ Low temperature impacting test
♦ Ultrasonic test under ASTM A435,A577,A578
♦ Cetificated by ABS,LR,GL,BV,DNV,KR,NK,CCS,RINA
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ Shot blasting and Painting,Cutting and welding as per end user’s demands