Steels for structural applications as per EN 10346

Standards
Grade	Steel grade no.	DIN 17162/2	ASTM A 466 M	BS2989	NF A 36-322	UNI 5783
S250GD	1.0242	StE250-2Z	Grade B	Z 25	C 250	Fe E250 G
S280GD	1.0244	StE280-2Z	Grade C	Z 28	C 280	Fe E280 G
S320GD	1.0250	StE320-2Z	-	-	C 320	Fe E320 G
S350GD	1.0529	StE350-2Z	Grade D	Z 35	C 350	Fe E350 G
S390GD	1.0238	-	-	-	-	-
S420GD	1.0239	-	-	-	-	-
S450GD	1.0233	-	-	-	-	-

Feasibility range
Grade	Thickness		Width
Grade		min.	max.	max.
S250GD	0.3	4.0	1520
S280GD	0.3	4.0	1520
S320GD	0.3	4.0	1520
S350GD	0.38	4.0	1520
S390GD	0.49	3.5	1520
S420GD	1.38	3.5	1520
S450GD	0.90	3.0	1520

Feasibility on the specific combination of thickness and width must be verified in the order phase.

Mechanical properties
Grade	Yield strength	Tensile strength	Elongation
	MPa	MPa	%
S250GD	≥ 250	≥ 330	≥ 19
S280GD	≥ 280	≥ 360	≥ 18
S320GD	≥ 320	≥ 390	≥ 17
S350GD	≥ 350	≥ 420	≥ 16
S390GD	≥ 390	≥ 460	≥ 16
S420GD	≥ 420	≥ 480	≥ 15
S450GD	≥ 450	≥ 510	≥ 14

Surface finish
grade	NA	MA	MB
	mm	mm	mm
S250GD	0.3 - 4.0	0.3 - 4.0	0.3 - 3.2
S280GD	0.3 - 4.0	0.3 - 4.0	0.3 – 3.2
S320GD	0.3 - 4.0	0.3 - 4.0	0.3 – 3.2
S350GD	0.38 - 4.0	0.38 - 4.0	0.38 – 3.2
S390GD	0.49 – 3.5	0.49 – 3.5	0.49 – 3.2
S420GD	1.38 – 3.5	1.38 – 3.5	1.38 – 3.2
S450GD	0.90 – 3.0	0.90 – 3.0	0.90 – 3.0