ABS EH40 Steel Plate – Properties, Chemistry & Equivalents

ABS EH40 (also written AB/EH40, ABS Grade EH40, EH40 steel plate) is a higher-strength hull structural steel. In the grade name, the letter E is the toughness grade (impact test at -40°C) and 40 denotes the strength level with a minimum yield strength of 390 MPa.

Gangsteel is specialized in supplying ABS high strength steel plate in ABS Grade EH40. For more information of GradeEH40 steel plate, please check them in following:

 

 

 

AB/EH40 high Strength Chemical Composition

AB/EH40

ABS EH40 chemical composition, % – heat (ladle) analysis and product (check) analysis

Element	Heat analysis (max/min)	Product analysis
C	≤ 0.18	≤ 0.22
Mn	0.90–1.60	0.81–1.72
Si	0.10–0.50	0.04–0.56
P	≤ 0.035	≤ 0.045
S	≤ 0.035	≤ 0.045
Al (acid-soluble)	≥ 0.015	— (no tolerance in ASTM A6 Table A; product value not given)
Nb	0.02–0.05	0.010–0.060
V	0.05–0.10	0.040–0.110
Ti	≤ 0.02	≤ 0.03
Cu	≤ 0.35	≤ 0.38
Cr	≤ 0.20	≤ 0.24
Ni	≤ 0.40	≤ 0.43
Mo	≤ 0.08	≤ 0.09

Al, Nb and V minima apply when used singly (combined minima per ABS 2-1-3/5); Si min does not apply where acid-soluble Al ≥ 0.015%; AH ≤ 12.5 mm may have Mn min 0.70%. Product analysis = heat limit ± ASTM A6/A6M Table A permitted variation (band chosen by the specified maximum/upper limit); applies only when product (check) analysis is required; for a range, results may not vary both above and below it. Per ABS Rules for Materials and Welding Part 2 (2022); product analysis tolerances per ABS 2-1-2/5.3 (“chemical tolerances of ASTM A6”) and ASTM A6/A6M 7.2, Table A (also invoked by ASTM A131). Heat limits: ABS 2-1-3/7.3 Table 1 (t ≤ 150 mm).

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】%

 

 

 

AB/EH40 high strength property

AB/EH40

ABS EH40 mechanical properties by thickness

Thickness (mm)	Yield min (MPa)	Tensile (MPa)	Elongation A5 min (%)	Charpy test temp (°C)	Impact avg min, longitudinal (J)	Impact avg min, transverse (J)
t≤50	390	510-650	20	-40	39	26
50<t≤70	390	510-650	20	-40	46	31
70<t≤100	390	510-650	20	-40	55	37

Source: ABS Rules Pt 2, 2-1-3 Tables 2 & 4. Either direction acceptable.

Boiler steel plates| Alloy steel plates| High strength plate| Carbon steel plate

 

 

 

 

 

Equivalent steel grade of AB/EH40
DNV	GL	LR	BV	CCS	NK	KR	RINA
NV E40	GL-E40	LR/EH40	BV/EH40	CCS/E40	K E40	R E40	RI/E40

 

 

 

If you need more stock steel plates in shipbuilding steel plate, please click warehouse sizes.

 

 Related steel grades: AB/D, AB/EH32, AB/EH36, AB/DH40

 

ABS Steel Plate Grade Supplier
General Strength	AB/A	AB/B	AB/D	AB/E
High Strength	AB/AH32	AB/DH32	AB/EH32	AB/FH32
	AB/AH36	AB/DH36	AB/EH36	AB/FH36
	AB/AH40	AB/DH40	AB/EH40	AB/FH40
Extra Strength	AB/AQ43	AB/DQ43	AB/EQ43	AB/FQ43
	AB/AQ47	AB/DQ47	AB/EQ47	AB/FQ47
	AB/AQ51	AB/DQ51	AB/EQ51	AB/FQ51
	AB/AQ56	AB/DQ56	AB/EQ56	AB/FQ56
	AB/AQ63	AB/DQ63	AB/EQ63	AB/FQ63
	AB/AQ70	AB/DQ70	AB/EQ70	AB/FQ70

 

FAQ

What does EH40 mean in ABS steel?

'E' is the toughness grade (impact test at -40°C) and '40' denotes the strength level with a minimum yield strength of 390 MPa.

What are the mechanical properties of ABS EH40?

Minimum yield 390 MPa, tensile strength 510-650 MPa; Charpy V impact average ≥39 J longitudinal / 26 J transverse at -40°C for t≤50 mm.

What is the impact test temperature of ABS EH40?

-40°C.

What is ABS EH40 equivalent to?

ASTM A131 EH40, and grade EH40 (DNV: VL EH40) of other IACS member societies such as LR, BV and CCS, as all follow IACS UR W11. The class certificate must match the project's classification society.

What is the chemical composition of ABS EH40?

C ≤0.18%, Mn 0.90-1.60%, Si 0.10-0.50%, P and S ≤0.035%, with Nb/V/Ti grain refiners; see the table above.

ASTM equivalent: ASTM A131 EH40 steel plate

LR equivalent: LR EH40 steel plate