Q345 Carbon Steel Coil

Q345 steel is a low alloy high-strength structural steel commonly used in fields such as construction, bridges, aerospace, mechanical manufacturing, petroleum drilling, chemical equipment, etc. It is a commonly used steel in China, using the grade Q345 and complying with the national standard GB/T 1591-2008.

Standard: ASTM, GB, DIN, BS, EN, JIS

Categories: Carbon Steel, Carbon Steel Coil/StripWidth: Cold Roled: 50~1500mm, Hot Rolled: 20~2000mmLength: 1000mm~12000mmThickness:
Cold Roled: 0.1~6mm / Hot Rolled: 3~12mm

Product Name	Q345 Carbon Steel Coil
Standard	ASTM,AISI,DIN,EN,BS,GB,JIS
Grade	ASTM/ASME: A36, A283, A285, A514, A516, A572, A1011/A1011M
	GB: Q195, Q235/Q235B, Q255, Q275, Q345/Q345B, Q420, Q550, Q690
	JIS: SS400, G3131 SPHC, G3141 SPCC, G4051 S45C, G4051 S50C
	AISI 1008, AISI 1015, AISI 1017, AISI 1021, AISI 1025, AISI 1026, AISI 1035, AISI 1045, AISI 1050, AISI 1055, AISI 4140, AISI 4340, AISI 4130, AISI 5140, AISI 8620, AISI 12L14
	SAE: 1010, SAE 1020, SAE 1045
Technique	Hot rolled / Cold rolled
Type	Mild steel / Medium carbon steel / High carbon steel
Surface	Coating, Pickling, Phosphating
Processing	Welding, Cutting, Bending, Decoiling
Delivery time	10-30 days subject to the clients' requirement and quantity
Package	clients' requirement and Standard export sea-worthy packing
MOQ	1 ton

Available Size Range

Dimension	Range
Thickness	Cold Rolled: 0.2~6mm Hot Rolled: 3~12mm
Width	Cold Roled: 50~1500mm Hot Rolled: 20~2000mm or customer's request
Length	Coil or as customer's request

Chemical Composition

		Chemical Composition (≤%)
Steel Grade	Quality Grade	C	Si	Mn	P	S	Cr	Ni	Mo	Cu	Ti	N	Nb	V	B	Al, ≥
Q345	Q345A	0.20	0.50	1.70	0.035	0.035	0.30	0.50	0.10	0.30	0.20	0.012	0.07	0.15	–	–
	Q345B				0.035	0.035										–
	Q345C				0.030	0.030										0.015
	Q345D	0.18			0.030	0.025
	Q345E	0.18			0.025	0.020

Physical Properties

Density: 7.85 g/cm3 (0.284 lb/in3)

Melting point: 1450-1530 °C (2640-2800 °F)

Application

Q345 steel has high strength, excellent weldability, cold & hot workability and certain corrosion resistance. It is widely used in bridges, ships, boilers, pressure vessels, petroleum storage tanks, lifting transport machinery and other high-load welded structural parts.