Q345 Carbon Steel Coils

Q345 is a steel material. It is a low alloy steel (C < 0.2%), widely used in construction, bridges, vehicles, ships, pressure vessels, etc. Q stands for the yield strength of this material. The latter 345 is the yield value of this material, which is about 345 MPa. The yield value will decrease with the increase of material thickness.

Q345 has excellent mechanical properties, good performance in low temperatures, and excellent weldability and plasticity. It is most commonly used in building structures, low-pressure vessels, cranes, mechanical parts, bridges, ships, petroleum storage tanks, lifting machinery, power stations, mining machinery, general metal parts, and in other structures that are exposed to temperatures of -40 ℃ or below or experience high-loads.

Product Details

Product Name	Carbon Steel Coils
Coil weight	as required
Width	1250mm,1500mm or as required
Thickness	0.2mm-50mm or as required
Standard	GB/T1591-2008
Technique	Cold rolled/Hot rolled
Surface Treatment	According to customer's requirement
Thickness Tolerance	±0.01mm~ ±0.25mm
Material	Q345
Application	Bridges, vehicles, ships, buildings, pressure vessels, etc.
MOQ	1 ton , We can accept sample order.
Shipment Time	Within 15-20 workdays after receiving deposit or workable L/C
Export Packing	Standard Export Seaworthy Package.Suit for all kinds of transport,or as required
Capacity	250,000 tons/year

Chemical Composition:

Grade	C	Si	Mn	P	S	V	Nb	Ti	AL
Grade	≤%	≤%	≤%	≤%	≤%	%	%	%	≥%
Q345A	0.20	0.55	1.70	0.045	0.045	0.02-0.15	0.015-0.060	0.02-0.20	/
Q345B	0.20	0.55	1.70	0.040	0.045	0.02-0.15	0.015-0.060	0.02-0.20	/
Q345C	0.20	0.55	1.70	0.035	0.035	0.02-0.15	0.015-0.060	0.02-0.20	0.015
Q345D	0.18	0.55	1.80	0.030	0.030	0.02-0.15	0.015-0.060	0.02-0.20	0.015
Q345E	0.18	0.55	1.80	0.025	0.025	0.02-0.15	0.015-0.060	0.02-0.20	0.015

Physical properties :

Grade	Tensile strength (MPa)	Yield strength (MPa)	Elongation δ5≥(%)
Grade	Tensile strength (MPa)	Yield strength (MPa)	Elongation δ5≥(%)
Q345A (thickness≦16mm)	470-630	345	21
Q345B(thickness≦16mm)	470-630	345	21
Q345C(thickness16-35mm)	470-630	≥325	22
Q345D(thickness35-50mm)	490-675	≥295	22
Q345E(thickness50-100mm)	490-675	≥275	22

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