Q345C steel properties and Q345C material data sheet

Q345C steel is Q345 grade C low alloy high strength steel. The low temperature impact test of Q345C material has a lower temperature and better performance, comparing with that of Q345A and Q345B steel. Besides, the content of harmful substances P and S is lower, and market price of Q345C steel is higher than that of Q345A and Q345B steel.

Q345C steel properties - Q345C steel plate chemical composition:

Grade	C≤	Mn≤	Si≤	P≤	S≤	V≤	Nb≤	Ti≤	Cr≤	Ni≤	Cu≤	N≤	Mo≤	B	Als≥
Q345C	0.20	1.70	0.50	0.030	0.030	0.15	0.07	0.20	0.30	0.50	0.30	0.012	0.10	-	0.015

Q345C steel properties - Q345C steel plate tensile strength:

Thk (mm)	To 40	40-63	63-80	80- 100	100-150	150-250	250-400
Q345C	470-630	470-630	470-630	470-630	450-600	450-600	-

Q345C steel properties - Q345C steel plate yield strength (min.):

Thk (mm)	To 16	16-40	40-63	63-80	80- 100	100-150	150-200	200-250	250-400
Q345C	345	335	325	315	305	285	275	265	-

Q345C steel properties - Q345C steel plate elongation (min.):

Thk (mm)	To 40	40-63	63-100	100-150	150-250	250-400
Q345C	21	20	20	19	18	-

Q345C steel properties - Q345C steel plate impact test temperature and energy:

Grade	Test Temperature	Min. absorbed energy
		12mm-150mm	150mm-250mm	250mm-400mm
Q345C	0℃	≥34J	≥27J	-

Q345C steel has good comprehensive mechanical properties, good weldability, cold and hot workability, and corrosion resistance. Q345C material also has good low temperature toughness. Q345C steel is mainly used in ships, boilers, pressure vessels, petroleum storage tanks, bridges, power station equipment, lifting and transportation machinery and other higher-load welded structural parts.