DNV Grade F620 Extra High - Strength Steel Plate for Marine Engineering

DNV Grade F620 is a high-strength shipbuilding steel plate, certified by the DNV classification society, used for constructing ships and offshore structures. It has a minimum yield strength of 620 MPa and a tensile strength between 720 and 890 MPa, with excellent low-temperature impact toughness tested down to −60°C. This makes it suitable for critical applications requiring superior strength and durability in marine environments.

DNV Grade F620 Shipbuilding Steel Plate Chemical Composition and Mechanical Property

NV F620 extra high Strength Chemical Composition
Grade	The Element Max (%)
Grade	C	Si	Mn	P	S	Al	N
NV F620	0.18	0.10-0.55	1.6	0.025	0.025	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

NV F620 extra high general strength property
Grade		Mechanical Property			Charpy V Impact Test
Grade	Thickness	Yield	Tensile	Elongation	Degree	Energy 1	Energy 2
NV F620	mm	Min Mpa	Mpa	Min %	-60	J	J
	t≤50	620	720-890	15%		41	62
	50＜t≤70	620	720-890	15%		41	62
	70＜t≤150	620	720-890	15%		41	62

DNV Grade F620 Shipbuilding Steel Plate Application

DNV Grade F620 Marine Steel Plate

Hull Construction

DNV Grade F620 Marine Steel Plates are primarily used in building the hull structure of ships, including bulk carriers, oil tankers, container ships, and general cargo vessels.

The steel's high tensile strength and impact resistance ensure structural integrity under heavy loads, strong waves, and dynamic marine conditions.

Decks and Superstructures

Applied in the fabrication of ship decks, superstructures, and bulkheads, DNV Grade F620 ship plates maintain stability and load-bearing capacity while resisting deformation.

DNV Grade F620 Marine Steel Plate Offshore Engineering Structures

DNV Grade F620 offshore platform steel plate grades are also used in offshore platforms, drilling rigs, and floating production storage and offloading (FPSO) units.

Their ability to withstand low-temperature impact and harsh sea conditions makes them suitable for deep-sea oil and gas exploration projects.

Reinforcement and Safety Components

Utilized in critical parts of vessels, including keels, ribs, frames, and brackets, to provide additional strength and enhance the overall safety of ships.

DNV Grade F620 Shipbuilding Steel Plate Other Name

DNV Grade F620 Shipbuilding steel plate,DNV Grade F620 Ship Steel plate ,DNV Grade F620 Marine Steel plate , DNV Grade F620 Steel Plate .

Additional Condition

UT(Ultrasonic examination), AR(As Hot Rolled only), TMCP(Thermal Mechanical Control Processing), N(Normalized), Q+T(Quenched and Tempered),Z Direction Test(Z15,Z25,Z35), Charpy V-Notch Impact Test, The Third Party Test (such as SGS Test), Coated or Shot Blasting and Painting.

Request A Quote

If you want to learn about or purchase other ship plates from GNEE, you can send an email to info@gneesteels.com. We will be very happy to serve you.

ABS Steel Plate Grade Supplier
General Strength	ABS Grade A	ABS Grade B	ABS Grade D	ABS GradeE
High Strength	ABS Grade AH32	ABS Grade DH32	ABS Grade EH32	ABS Grade FH32
	ABS Grade AH36	ABS Grade DH36	ABS Grade EH36	ABS Grade FH36
	ABS Grade AH40	ABS Grade DH40	ABS Grade EH40	ABS Grade FH40
Extra Strength	ABS Grade AQ43	ABS Grade DQ43	ABS Grade EQ43	ABS Grade FQ43
	ABS Grade AQ47	ABS Grade DQ47	ABS Grade EQ47	ABS Grade FQ47
	ABS Grade AQ51	ABS Grade DQ51	ABS Grade EQ51	ABS Grade FQ51
	ABS Grade AQ56	ABS Grade DQ56	ABS Grade EQ56	ABS Grade FQ56
	ABS Grade AQ63	ABS Grade DQ63	ABS Grade EQ63	ABS Grade FQ63
	ABS Grade AQ70	ABS Grade DQ70	ABS Grade EQ70	ABS Grade FQ70
ASTM A131 Grade Supplier
Ordinary strength	ASTM A131 Grade A	ASTM A131 Grade B	ASTM A131 Grade D	ASTM A131 Grade E
low - temperature toughness	ASTM A131 Grade AH32	ASTM A131 Grade AH36	ASTM A131 Grade AH40
low - temperature toughness	ASTM A131 Grade AH32	ASTM A131 Grade AH36	ASTM A131 Grade AH40	/
Medium - low temperature toughness	ASTM A131 Grade DH32	ASTM A131 Grade DH36	ASTM A131 Grade DH40
Medium - low temperature toughness	ASTM A131 Grade DH32	ASTM A131 Grade DH36	ASTM A131 Grade DH40	/
Better low - temperature toughness	ASTM A131 Grade EH32	ASTM A131 Grade EH36	ASTM A131 Grade EH40
Better low - temperature toughness	ASTM A131 Grade EH32	ASTM A131 Grade EH36	ASTM A131 Grade EH40	/
Ultra - low temperature toughness	ASTM A131 Grade FH32	ASTM A131 Grade FH36	ASTM A131 Grade FH40
Ultra - low temperature toughness	ASTM A131 Grade FH32	ASTM A131 Grade FH36	ASTM A131 Grade FH40	/
CCS Steel Plate Grade Supplier
General Strength	CCS Grade A	CCS Grade B	CCS Grade D	CCS GradeE
High Strength	CCS Grade AH32	CCS Grade DH32	CCS Grade EH32	CCS Grade FH32
	CCS Grade AH36	CCS Grade DH36	CCS Grade EH36	CCS Grade FH36
	CCS Grade AH40	CCS Grade DH40	CCS Grade EH40	CCS Grade FH40
Extra Strength	CCS Grade AQ43	CCS Grade DQ43	CCS Grade EQ43	CCS Grade FQ43
	CCS Grade AQ47	CCS Grade DQ47	CCS Grade EQ47	CCS Grade FQ47
	CCS Grade AQ51	CCS Grade DQ51	CCS Grade EQ51	CCS Grade FQ51
	CCS Grade AQ56	CCS Grade DQ56	CCS Grade EQ56	CCS Grade FQ56
	CCS Grade AQ63	CCS Grade DQ63	CCS Grade EQ63	CCS Grade FQ63
	CCS Grade AQ70	CCS Grade DQ70	CCS Grade EQ70	CCS Grade FQ70
LR Steel Plate Grade Supplier
General Strength	LR/A	LR/B	LR/D	LR/E
High Strength	LR/AH32	LR/DH32	LR/EH32	LR/FH32
	LR/AH36	LR/DH36	LR/EH36	LR/FH36
	LR/AH40	LR/DH40	LR/EH40	LR/FH40
Extra Strength	LR/AH42	LR/DH42	LR/EH42	LR/FH42
	LR/AH46	LR/DH46	LR/EH46	LR/FH46
	LR/AH50	LR/DH50	LR/EH50	LR/FH50
	LR/AH55	LR/DH55	LR/EH55	LR/FH55
	LR/AH62	LR/DH62	LR/EH62	LR/FH62
	LR/AH69	LR/DH69	LR/EH69	LR/FH69
DNV Steel Plate Grade Supplier
General Strength	DNV Grade A	DNV Grade B	DNV Grade D	DNV Grade E
High Strength	DNV Grade A32	DNV Grade D32	DNV Grade E32	DNV Grade F32
	DNV Grade A36	DNV Grade D36	DNV Grade E36	DNV Grade F36
	DNV Grade A40	DNV Grade D40	DNV Grade E40	DNV Grade F40
Extra Strength	DNV Grade A420	DNV Grade D420	DNV Grade E420	DNV Grade F420
	DNV Grade A460	DNV Grade D460	DNV Grade E460	DNV Grade F460
	DNV Grade A500	DNV Grade D500	DNV Grade E500	DNV Grade F500
	DNV Grade A550	DNV Grade D550	DNV Grade E550	DNV Grade F550
	DNV Grade A620	DNV Grade D620	DNV Grade E620	DNV Grade F620
	DNV Grade A690	DNV Grade D690	DNV Grade E690	DNV Grade F690

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