Steels for large diameter pipelines

Standards
Europe	Material no.	D	USA
EN 10208-2		DIN 17172	API 5L
L245NB	1.0457	StE 240.7	Gr. B
L290NB	1.0484	StE 290.7	X 42
L360NB	1.0582	StE 360.7	X 52

Feasibility range
Grade	Thickness		Width
Grade		min.	max.	max.
Gr. B	2.0	12	1575
X 42	2.0	12	1575
X 52	2.0	12	1575

1) For thicknesses up to 2.5 mm maximum width is 1520 mm
2) Feasibility on the specific combination of thickness and width must be verified in the order phase.

Chemical composition
Grade	C	Si	Mn	P	S	Ti	V	Nb	C_E
EN 10208-2	max.	max.	max.	max.	max.	max.	max.	max.	max.
L245NB	0.16²⁾	0.40	1.10	0.025	0.020	-	-	-	0.42
L290NB	0.17²⁾	0.40	1.20	0.025	0.020	0.04	0.05	0.05	0.42
L360NB	0.20²⁾	0.45	1.60	0.025	0.020	0.04	0.10	0.05	0.45

API 5 L
Gr. B	0.26⁵⁾	-	1.20	0.030	0.030	-	-	-	-
X 42	0.26⁵⁾	-	1.30	0.030	0.030	-	-	-	-
X 46	0.26⁵⁾	-	1.40	0.030	0.030	-	-	-	-
X 52	0.26⁵⁾	-	1.40	0.030	0.030	-	-	-	-

Mechanical properties
Grade	Yield strength	Tensile strength min.	Elongation min	Min. notch impact energy at 0°C	Drop weight tear test min. amount of fracture by shear stress at 0°C
	MPa	MPa	%	J	%
EN 10208–2
L245NB	245 - 440	415	22	-
L290NB	290 - 440	415	21	-
L360NB	360 - 510	460	20	-

API 5 L
Gr. B	min. 245	415	29,5	68	60
X 42	min. 290	415	29,5	68	60
X 46	min. 320	435	28,5	68	60
X 52	min. 360	460	27,0	68	60