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DNV GRADE E690| DNV E690 STEEL PLATE

Steel Standard:DNV (Det Norske Veritas)

Rolling Type:Extra high strength ship plate

Thickness:6mm-250mm

Width:1500mm-4200mm

Length:3000mm-18000mm

Heat Treatment:Quenched and Tempered

What is DNV E690 STEEL PLATE?

NV E690 shipbuilding steel plate is an extra higher strength shipbuilding plate which is mainly used for built hull of vessels,ship body construction and oil offshaore platform.Normally when rolling,quenched and tempered would improve steel strength in yield and tensile points.Generally before using these ship plates DNV Grade E690,steel plate pretreatment is necessary.Pre-treatment including shot blasting and painting with shop primer.

Mechanical Properties

The mechanical properties of VL EH690/E690 steel plates are noteworthy. They possess high yield strength and tensile strength, coupled with excellent toughness and ductility. These properties enable the steel plates to withstand extreme loads and stresses encountered in marine environments, ensuring the safety and durability of marine structures.

Heat Treatment State

The VL EH690/E690 steel plates are typically supplied in a quenched and tempered condition. This heat treatment process improves the steel’s strength and toughness, making it suitable for high-stress applications. The quenched and tempered state also ensures uniform mechanical properties throughout the plate, enhancing its reliability and performance.

Size Range

The VL EH690/E690 steel plates are available in a wide range of thicknesses, widths, and lengths. This versatility allows for the fabrication of various marine structures, including hulls, decks, and other critical components. The availability of customized sizes further adds to the plates’ versatility and adaptability to specific project requirements.

Impact Testing

Impact testing is a crucial aspect of the VL EH690/E690 steel plates’ qualification process. These tests are conducted to assess the steel’s resistance to sudden and intense loads, such as those encountered during collisions or extreme weather conditions. The steel plates meet strict impact toughness requirements, ensuring their ability to perform reliably under extreme conditions.

Main Application Scenarios

The VL EH690/E690 steel plates find widespread application in various marine scenarios. They are commonly used in the construction of ships, offshore platforms, and other marine structures that require high strength and durability. The steel’s excellent corrosion resistance also makes it suitable for use in saltwater environments.

Specification Parameters
Basic Information

DNV E690 extra high Strength Chemical Composition

Grade

The Element Max (%)

C

Si

Mn

P

S

Al

N

DNV E690

0.20

0.10-0.55

1.7

0.030

0.030

0.015-0.08

0.020

Nb

V

Ti

Cu

B

Ni

Mo

0.02-0.05

0.04-0.10

0.02

0.005

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】%

 

DNV E690 extra high general strength property

Grade

Mechanical Property

Charpy V Impact Test

Thickness

Yield

Tensile

Elongation

Degree

Energy 1

Energy 2

DNV E690

mm

Min Mpa

Mpa

Min  %

-40

J

J

t≤50

690

770-940

14%

46

69

50<t≤70

690

770-940

14%

46

69

70<t≤150

690

770-940

14%

46

69

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

 

Equivalent steel grade of DNV E690

ABS

GL

LR

BV

CCS

NK

KR

RINA

AB/EQ70

GL-E690

LR/EH69

BV/E690

CCS/E690

K E70

R E70

RI/E690

Service Support
DNV GRADE E690| DNV E690 STEEL PLATE
DNV Steel Plate Grade Supplier
General Strength NV A NV B NV D NV E
High Strength NV A32 NV D32 NV E32 NV F32
NV A36 NV D36 NV E36 NV F36
NV A40 NV D40 NV E40 NV F40
Extra Strength NV A420 NV D420 NV E420 NV F420
NV A460 NV D460 NV E460 NV F460
NV A500 NV D500 NV E500 NV F500
NV A550 NV D550 NV E550 NV F550
NV A620 NV D620 NV E620 NV F620
NV A690 NV D690 NV E690 NV F690