Difference between LR DH62 and LR EH62 steel plate

Jan 26, 2026 Lämna ett meddelande

LR DH62 and LR EH62 are both high-strength, Lloyds Register (LR) certified shipbuilding steel grades with the same yield strength 620 MPa, tensile strength 720-890 MPa, and chemical composition. The primary difference is their notch toughness: EH62 is tested at lower temperatures -40℃ C compared to DH62 -20℃ C, making EH62 better suited for arctic conditions.

LR DH62 extra high Strength Chemical Composition

	C			P	S		N
LR DH62	0.20	0.55	1.70	0.030	0.030	0.015	0.020
		V
	0.02-0.05	0.03-0.10	0.02

LR EH62 extra high Strength Chemical Composition

	C			P	S		N
LR EH62	0.20	0.55	1.70	0.030	0.030	0.015	0.020
		V
	0.02-0.05	0.03-0.10	0.02

LR DH62 extra high strength property

						Energy 1	Energy 2
LR DH62					-20	J	J
	t<=50	620	720-890	17%		41	62
	50＜t<=70	620	720-890	17%		41	62
	70＜t<=100	620	720-890	17%		41	62
Note: Energy 1 is transverse impact test, Energy 2 is longitudinal

LR EH62 extra high strength property

						Energy 1	Energy 2
LR EH62					-40	J	J
	t<=50	620	720-890	17%		41	62
	50＜t<=70	620	720-890	17%		41	62
	70＜t<=100	620	720-890	17%		41	62
Note: Energy 1 is transverse impact test, Energy 2 is longitudinal

LR DH62: "D" signifies Charpy V-Notch impact testing at -20℃ C.

LR EH62: "E" signifies Charpy V-Notch impact testing at -40℃ C.

Strength: Both have a minimum yield strength of 620 MPa and a tensile strength range of 720-890 MPa.

Application: Both are used for heavy-duty ship structures, but EH62 is required for colder, more extreme environments.