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Q345A Carbon Steel Plate

Q345 low alloy steel.
Grade: Q345A, Q345B, Q345C, Q345D, Q345E

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Products Description

Hot rolled steel is steel that has been roll-pressed at very high temperatures—over 1,700, which is above the re-crystallization temperature for most steels. This makes the steel easier to form, and resulting in products that are easier to work with. To process hot rolled steel, manufacturers first start with a large, rectangular length of metal, called a billet. The billet is heated and then sent for pre-processing, where it is flattened into a large roll. From there, it is kept at a high temperature and run through a series of rollers to achieve its finished dimensions. Steel shrinks slightly as it cools. Since hot rolled steel is cooled after processing, there is less control over its final shape, making it less suitable for precision applications. Hot rolled steel is often used in applications where minutely specific dimensions aren't crucial.

Items	Wear resistant steel plate	Alloy steel plate	High pressure vessel steel plate	Ship steel plate	Weather resistant steel plate
Standard	AISI,ASTM,DIN,JIS,GB,JIS,SUS,EN,etc.
Technique	Hot rolled/Cold rolled
Length	4m-12m or as required
Width	0.5m-3m or as required
Thickness	0.12mm-40mm or as required
Surface Treatment	Clean, blasting and painting according to customer requirement				according to customer requirement
Thickness tolerance	±0.1mm	±0.15mm	±0.1mm	±0.15mm	±0.1mm
Material	NM450L,NM450A,NM600,NM400, NM400L,NM400A, NM500A ,NM500,NM360L,NM360, NM550,NM450 NR360,NR400,MITTA 400F, MITTA 450F,MITTA 500F Hardox400,Hardox450, Hardox500,Hardox 550,Hardox600,SB-40,SB-45,SB-50	Q345,Q345A,,Q345B,Q345C ,Q345D,Q345E,Q235B HC340LA,HC380LA, HC420LA B340LA,B410LA 15CRMO,12Cr1MoV,20CR, 40CR,65MN A709GR50	Q245R,Q345R,Q370R 15CrMoR,15MnNiDR,15Mo3, 15CrMoG 09MnNiDR,12MnNiVR,13MnNiMoR, Gr70, 18MnMoNbR,19Mn6 12Cr2Mo1R,12Cr1MoVR, 12CrMo1R,14Cr1MoR	NVA,NVD,A,A32,,A36,AH32 ,AH36,B,16MnL Q235,Q235B EH32,EH36 CCS-A,CCS-B,CCSA,CCSB,CCS,CCSD,CCSE D32,D36,DH32,DH36, GL-B,GL-D,GL-E, E32,E36	09CuPCrNi-A,09CuP, 09CuPCrNiA, 09CrCuSb Q355NH,Q460NH, Q345GNHL, Q345GNHL, Q355GNH, Q345GNH, Q295NH, Q295NH,Q295NH,Q310GNH ,Q345NH,Q235NH,Q500NH, Q235GNH,Q550NH,Q265GNH, Q295GNH,Q450NQR1
Application	It is widely used in mining machinery ,environmental protection machinery, cement machinery, engineering machinery etc due to it is high wear resistance etc.	It is used in machine parts and engineering components,measuring tools etc.	Used in tool steel, cementation steel and bearing steel etc.	It is used in make ship body ,decks etc.	It can also be used in the floor board,containers, power plant chimneys, railway engineering and other outdoor steel, such as large outdoor sculpture steel etc.
Export packing	Waterproof paper, and steel strip packed. Standard Export Seaworthy Package.Suit for all kinds of transport,or as required.
MOQ	10tons.We also can accept sample order.
Shipment time	Within 15-20 days after receiving deposit or L/C

It is a flat sheet of steel made by pouring molten steel, cooling and pressing. The steel plate is divided according to thickness, the steel plate <4 mm (the thinnest 0.2mm), medium thick steel plate 4-60 mm, extra thick steel plate 60-115 mm. The steel plate is divided into rolling, hot rolling and cold rolling. The width of the sheet is 500~3000 mm; The thick width is 600~3000 mm. There are common steel, high quality steel, alloy steel, spring steel, stainless steel, tool steel, heat-resistant steel, bearing steel, silicon steel and industrial pure iron sheet. According to professional use, there are oil barrel board, enamel board, bulletproof board and so on; According to the surface coating layer, galvanized sheet, tin plate, lead plate, plastic composite plate.

THE PRODUCTION PROCESS

Product Advantage

HIGH PERFORMANCE

Smooth surface,excellent corrosionresistance & high heat resistance&adequate zinc layer

HIGH QUALITY

Best raw materials for productionadvanced technologies and thoroughinspection system

CUSTOMIZABLE SURFACE

Perfect Painting & beautifulappearance customize yourdifferent needs

Chemical Composition

Steel grade	C	Si	Mn	P	S	Als
Grade AH36	≤0.18	≤0.50	0.9-1.6	≤0.035	≤0.035	≥0.015
Grade DH36	≤0.18	≤0.50	0.9-1.6	≤0.035	≤0.035	≥0.015
Grade EH36	≤0.18	≤0.50	0.9-1.6	≤0.035	≤0.035	≥0.015
Grade FH36	≤0.18	≤0.50	0.9-1.6	≤0.035	≤0.035	≥0.015

Mechanical Properties

Steel grade	Yield point/MPa	Tensile point /MPa	Elongation/%	Temperature/° C	V-type impact test
					Akv/J
					≤50MM	50-70MM	70-100MM
Grade AH36	≥355	490-630	≥21	0	34/24	41/27	50/34
Grade DH36	≥355	490-630	≥21	-20	34/24	41/27	50/34
Grade EH36	≥355	490-630	≥21	-40	34/24	41/27	50/34
Grade FH36	≥355	490-630	≥21	-60	34/24	41/27	50/34

Carbon steel manufacturing process:

The smelting of carbon steel is usually carried out in converter and open hearth. Converters generally smelt ordinary carbon steel, while open furnaces smelt all kinds of high-quality steel. The technology of oxygen top blow converter is developing rapidly and it can replace open hearth furnace. The refined liquid steel is injected into the ingot mold to obtain various ingot. After the ingot is forged or rolled, it is processed into plates, strips, bars, and sections of various sectional shapes. Carbon steel is usually used directly in the hot rolled state. When used for manufacturing tools and various machine parts, it needs to be heat treated according to the requirements of use; As for steel castings, most of them are heat-treated.

Application of carbon steel:

Carbon steel, carbon tool steel, spring steel and all kinds of waste materials with carbon content of 0.1%-1.2% can be used as metallurgical steel carbon and carburizing steel materials. The following points should be noted when choosing carbon steel return material. 1. Steel ingot riser, hot rolling forging cutting head, etc., in which the content of phosphorus and sulfur is higher. The dosage should be controlled when smelting low phosphorus and sulfur alloy steel. 2. The components of scrap, waste wire and strip, waste steel and so on are not accurate. The selection should be careful, and it is best to use after remelting (washing furnace). 3.The use of carbon steel scrap steel should be carried out spark identification, classification use.

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