Columbium-Vanadium structural steel ASTM A572 grade 50 equivalent grade

Columbium-Vanadium structural steel ASTM A572 grade 50 is under ASTM A572 specification, which is for HSLA steel for plates, structural shapes, sheet pilings and bars. Steel ASTM A572 grade 50 is the most widely used steel among the five grades of ASTM A572: grae 42, 50, 55, 60, and 65. Columbium-Vanadium structural steel ASTM A572 grade 50 equivalent grade includes S355JR, ST52-3, SM490B, Q345B and so on.

Chemical composition of Columbium-Vanadium structural steel ASTM A572 grade 50 equivalent grade:

Grade	C (t≤16mm)	Si	Mn	P	S	Cu	N	Mo
A572 Gr 50	0.23 max	0.40 max	1.35 max	0.04 max	0.05 max	-	-	-
S355JR	0.27 max	0.60 max	1.70 max	0.045 max	0.045 max	0.60 max	0.014 max	-
ST52-3	0.22 max	-	-	0.50 max	0.50 max	-	-	-
SM490B	0.20 max	0.55 max	1.60 max	0.035 max	0.035 max	-	-	-
Q345B	0.20 max	0.50 max	1.70 max	0.035 max	0.035 max	0.30 max	0.012 max	0.1 max

Mechanical properties of Columbium-Vanadium structural steel ASTM A572 grade 50 equivalent grade:

Grade	Yield strength ReH/(N/mm2) (t≤16mm) min	Tensile strength Rm/(N/mm2) (3mm≤t≤16mm)	Elongation A/%(3mm≤t≤40mm) min
Grade	Yield strength ReH/(N/mm2) (t≤16mm) min	Tensile strength Rm/(N/mm2) (3mm≤t≤16mm)	Elongation A/%(3mm≤t≤40mm) min
A572 Gr 50	345	450	18
S355JR	355	470-630	22
ST52-3	355	490-630	22
SM490B	295	490-610	18
Q345B	345	470-630	20

Columbium-Vanadium structural steel ASTM A572 grade 50 equivalent grade S355JR, ST52-3, SM490B, Q345B are used in a wide variety of structural applications in many market segments. ASTM A572 grade 50 equivalent grade has much in common with Columbium-Vanadium structural steel ASTM A572 grade 50 in performance. For more information about their common points and differences, welcome to contact us.

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