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Q345 Carbon Steel Coil

1. Low MOQ and Flexible Production Ability.
2. Quick delivery and standard industry exporting package.
3. Best service with 24 hour`s reply
4.Support payment with T/T,L/C , paypal, kunlun bank, 100% LC ,etc.
5. OEM and ODM, welcome customers to visit our factory for better understanding;
6. Approved by ISO9001, CE, third party inspection such as SGS BV is welcomed;
7. Our factory provide steel products with competitive price and reliable quality (Shandong and Jiangsu);
8. Value friendship and trustworthy, devote to provide long-term service to our distinguished customers.

Phone :+86 13182087858

+86 13182087858

Email : spike@lezedasteel.com

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PRODUCT DETAILS

Q345 steel specification: Q345 steel belongs to 16Mn steel grade, usually it is produced in hot rolled state, hot rolled steel plate, hot rolled steel coil/sheet, it has comprehensive mechanical and welding property, as it shows good performance in structural purposes, it is widely used as welding structural part in manufacturing of ship, railway and vehicles, bridges, boiler, pressure vessel container, steel oil tank, etc. Yield point of Q345 steel plate decreases as plate thickness increases.

Q345 steel properties: welding property of Q345 steel is occasionally questioned by end users, although welding property is mainly affected by its chemical content, its production technology has been improved after all those years of research, and has been proved to be one excellent steel standard for steel structure purposes, you can contact us if there’s any doubt in your mind.

Application difference Q345 - Q235:
As Q345 and Q235 alloy element content is different, their applications are quite different.

Q235 carbon structural steel is made for metal construction that doesn’t have high demand for steel strength, tie rod, connecting rod, hook, coupler, bolt and nut, sleeve, shaft and welding parts.
Q345 is low alloy structural steel with good mechanical properties, low temperature performance, plasticity and good weldability, it is mostly used in low pressure vessel, oil tank, vehicles, cranes, mining machinery, power stations, mechanical parts, building structure, general metal parts, Q345(E) steel plate is always delivered in hot rolled or normalizing state, can be used in areas where its temperature is above -40 ℃.

Q345 Steel Chemical Composition:

Steel Standard	Steel Grade	Chemical Composition
Steel Standard	Steel Grade	C≤	Mn	Si≤	P≤	S≤	V	Nb	Ti	Al≥
Q345	A	0.20	1.00~1.60	0.55	0.045	0.045	0.02~0.15	0.015~0.060	0.20	-
	B	0.20	1.00~1.60	0.55	0.040	0.040	0.02~0.15	0.015~0.060	0.20	-
	C	0.20	1.00~1.60	0.55	0.035	0.035	0.02~0.15	0.015~0.060	0.20	0.015
	D	0.20	1.00~1.60	0.55	0.030	0.030	0.02~0.15	0.015~0.060	0.20	0.015
	E	0.20	1.00~1.60	0.55	0.025	0.025	0.02~0.15	0.015~0.060	0.20	0.015

Q345 Steel Mechanical Property:

Steel Standard	Steel Grade	Yield Strength Mpa	Tensile Stregth Map	Elongation %
Q345	A	345	470~630	21
	B	345	470~630	21
	C	345	470~630	22
	D	345	470~630	22
	E	345	470~630	22

Mechenical Property Comparision of Q345/Q235/S355:

Steel Grade	Tensile strength	Yield strength	Elongation afrer fracture
S355	450-630Mpa	≥355MPa	21-22%
S500MC	550-700Mpa	≥500MPa	≥12%
Q345B	490-675Mpa	≥345Mpa	≥21%
Q235B	375-500Mpa	≥235Mpa	≥26%

Chemical Composition Comparision of Q345/Q235/S355:

Steel Grade	C	Si	Mn	P	S
S355	≤0.22	≤0.55	≤1.60	≤0.025	≤0.025
S500MC	≤0.12	≤0.50	≤1.70	≤0.025	≤0.015
Q345B	≤0.20	≤0.50	≤1.70	≤0.035	≤0.035
Q235B	≤0.20	≤0.35	≤1.40	≤0.045	≤0.045

Q345 Steel Equivalent Standard(ASTM/EN/JIS):

Steel for boiler and other pressure vessels	GB 713-2008ASTM A537-08JIS G3115	Q245R (20g/20R); Q345R (16Mng/16MnR)Class 1/2/3SPV235; SPV315; SPV355
High strength low alloy structural steel	GB/T 1591-2008EN 10028-3-2003EN 10025-2004ASTM A572-07ASTM A588-05	Q345 (A/B/C/D/E); Q390; Q420P355NS420NGrade 50; Grade 60Grade A; Grade B

Why Choose Us?

1. who are we?
We are based in Shandong, China, sell to Domestic Market and Abroad Market. There are total about 51-100 people in our office.

2. how can we guarantee quality?
Always a pre-production sample before mass production; Always final Inspection before shipment;

3.what can you buy from us?
stainless steel plate,stainless steel coil,stainless steel sheet,stainless steel pipe and tube,sainless steel bar and other metal.

4. why should you buy from us not from other suppliers?
Runs perennial exports of quality assured steel mills ,including Shanxi TISCO, Baosteel, Shanghai Krupp, Ningbo Baoxin, Guangzhou Lianzhong, Zhangjiagang Pohang, Qingdao Pohang, Sweden AvestaPolarit, Finland OUTKUMPU, Spain Acerinox, South Africa Columbus

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