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Q345 Steel Sheet High Strength Steel Hot Rolling Construction Use Building Material

Categories Stainless Steel Plates
Brand Name: zhongxin
Model Number: Q345
Certification: ISO, EN, MTC
Place of Origin: CHINA
MOQ: 1 MT
Price: 5 USD ---10 USD / kg
Payment Terms: L/C, D/P, T/T, Western Union, MoneyGram
Supply Ability: 4000 MT PER week
Delivery Time: 5-25 Days
Packaging Details: Standard export seaworthy package or As required
Standard: GB/T1591-2008
THICKNESS: 0.1mm -200mm
Preferred width: 1000mm, 1219mm ,1500mm ,2000mm
length: MAX 15000 MM
Form or shape: plate
steel grade: Q345
Technique: Cold rolled , Hot rolled , Forged
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Q345 Steel Sheet High Strength Steel Hot Rolling Construction Use Building Material

Q345 steel Specification and Description

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 Chemical Composition:

Steel StandardSteel GradeChemical Composition
C≤MnSi≤P≤S≤VNbTiAl≥
Q345A0.201.00~1.600.550.0450.0450.02~0.150.015~0.0600.20-
B0.201.00~1.600.550.0400.0400.02~0.150.015~0.0600.20-
C0.201.00~1.600.550.0350.0350.02~0.150.015~0.0600.200.015
D0.201.00~1.600.550.0300.0300.02~0.150.015~0.0600.200.015
E0.201.00~1.600.550.0250.0250.02~0.150.015~0.0600.200.015

Mechenical Property Comparision of Q345/Q235/S355:

Steel GradeTensile strengthYield strengthElongation afrer fracture
S355450-630Mpa≥355MPa21-22%
S500MC550-700Mpa≥500MPa≥12%
Q345B490-675Mpa≥345Mpa≥21%
Q235B375-500Mpa≥235Mpa≥26%

Chemical Composition Comparision of Q345/Q235/S355:

Steel GradeCSiMnPS
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 vesselsGB 713-2008
ASTM A537-08
JIS G3115
Q245R (20g/20R); Q345R (16Mng/16MnR)
Class 1/2/3
SPV235; SPV315; SPV355
High strength low alloy structural steelGB/T 1591-2008
EN 10028-3-2003
EN 10025-2004
ASTM A572-07
ASTM A588-05
Q345 (A/B/C/D/E); Q390; Q420
P355N
S420N
Grade 50; Grade 60
Grade A; Grade B


General Q and A Questions

Q: Would you provide samples For free?

A: Yes. with on stock specification We provide samples For Free. Freight charge collect

Q: What information should i provide to source for the right products?

A: Material grade, width, thickness, coating and Purchase quantity, Expected lead time, etc


Q: What are the shipping ports?

A: Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you

can choose other ports according to your needs.


Q: About product prices?

A: Prices vary from period to period due to cyclical changes in the price of raw materials.


Q: How long does your delivery time take?

A: In general, our delivery time is within 5-45 days, and may be delayed if the demand is extremely

large or special circumstances occur.


Q: Can I visit your location?

A: Of course, we welcome customers from all over the world to visit our factory. However, some

of the plants are not open to the public.


Q: Does the product have quality inspection before loading?

A: Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed. We provide All Original Mill test certificate and support third party inspection.


Q: How to pack the products?

A: The inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation

wooden pallet. It can effectively protect products from corrosion during ocean transportation.


Q: What is your working time?

A: In general, our online service time is Beijing time: 8:00-22:00, after 22:00,

we will reply to your inquiry during the next working day.


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