Q345B/Q345C/Q345D/Q345E Carbon Steel Coil/Strip

Q345B/Q345C/Q345D/Q345E Carbon Steel Coil/Strip - Image 3

Q345B/Q345C/Q345D/Q345E Carbon Steel Coil/Strip - Image 4

Q345B/Q345C/Q345D/Q345E Carbon Steel Coil/Strip - Image 5

The Q345 series coils and strips are typical examples of low-alloy, high-strength steels. Classified by quality grade (B-E), they meet strength and toughness requirements in varying temperature environments, while offering excellent workability and weldability. Their high strength and lightweight properties make them a popular alternative to ordinary carbon steel in engineering structures and manufacturing, reducing material consumption while improving product safety, making them a cost-effective choice for the industrial sector.

Categories: Carbon Steel, Carbon Steel Coil/Strip

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Carbon Steel Coil/Strip

Product Introduction

Product Description

Product Name	Cold Rolled/ Hot Rolled Carbon Steel Coils Price
Standard	AISI,ASTM,DIN,JIS,GB,JIS,SUS,EN,etc.
Material	Q195, Q215,Q235,Q345,ST37, A36,45# ,16Mn, SPHC,SGCC,CGCC
Thickness(mm)	Hot Rolled Thickness:2.75mm-100mmCold Rolled Thickness:0.2mm-3mm As Your Request
Width(mm)	45mm-2200mm, As Your Request
Technique	Hot rolled / cold rolled
Surface	Bare,Black,Oiled,Shot Blasted,Spray Paint,Coated,Galvanized,or as Your Request
Coil ID	508-610mm or as per your request
Coil Weight	3~5 Tons or as per your request
Application	Construction, machinery manufacturing, container manufacturing, shipbuilding, bridges, etc.
Packing	Standard Export packing(Plastic film in the first layer,second layer is Kraft paper. Third layer is galvanized sheet)

Chemical Composition

Grade	C	Si	Mn	P	S	Cu	Cr	Ni
Cor-ten A	0.12	0.25-0.75	0.20-0.50	0.01-0.2	0.03	0.25-0.55	0.5-1.25	0.65
Cor-ten B	0.16	0.3-0.5	0.8-1.25	0.03	0.03	0.25-0.40	0.4-0.65	≤0.4
SPA-H	0.12	0.2-0.75	0.60	0.07-0.15	0.035	0.25-0.55	0.3-1.25	0.65
9CuPCrNi-A	0.12	0.2-0.75	0.20-0.50	0.07-0.15	0.040	0.25-0.55	0.3-1.25	0.65
Q235NH	0.13	0.10-0.40	0.20-0.60	0.03	0.030	0.25-0.55	0.40-0.80	0.65
Q295NH	0.15	0.10-0.50	0.30-1.00	0.03	0.030	0.25-0.55	0.40-0.80	0.65
Q355NH	0.16	0.5	0.50-1.50	0.03	0.030	0.25-0.55	0.40-0.80	0.65
Q415NH	0.12	0.65	1.10	0.025	0.030	0.20-0.55	0.30-1.25	0.12-0.65
Q460NH	0.12	0.65	1.50	0.025	0.030	0.20-0.55	0.30-1.25	0.12-0.65
Q500NH	0.12	0.65	2.0	0.025	0.030	0.20-0.55	0.30-1.25	0.12-0.65
Q550NH	0.12	0.65	2.0	0.025	0.030	0.20-0.55	0.30-1.25	0.12-0.65
Q265GNH	0.12	0.10-0.40	0.20-0.50	0.07-0.12	0.020	0.2-0.45	0.30-0.65	0.25-0.50
Q295GNH	0.12	0.10-0.40	0.20-0.50	0.07-0.12	0.020	0.25-0.45	0.30-0.65	0.25-0.50
Q310GNH	0.12	0.25-0.75	0.20-0.50	0.07-0.12	0.020	0.25-0.55	0.30-1.25	0.65
Q355GNH	0.12	0.20-0.75	1.00	0.07-0.15	0.020	0.25-0.55	0.30-1.25	0.65
Q345GNHL	0.12	0.25-0.75	0.20-0.50	0.07-0.15	0.035	0.25-0.55	0.30-0.65	0.65
Q295GQR2	0.12	0.10-0.40	0.20-0.50	0.06-0.12	0.020	0.25-0.45	0.30-0.65	0.25-0.5
Q295GQR3	0.12	0.20-0.40	0.25-0.55	0.06-0.12	0.020	0.25-0.50	—	—
Q345NQR2	0.12	0.25-0.75	0.20-0.50	0.06-0.12	0.020	0.25-0.50	0.3-1.25	0.12-0.65
Q345NQR3	0.12	0.20-0.50	0.25-0.70	0.06-0.12	0.020	0.25-0.50	—	—
Q400NQR1	0.12	0.75	1.10	0.025	0.008	0.25-0.55	0.3-1.25	0.12-0.65
Q450NQR1	0.12	0.75	1.50	0.025	0.008	0.25-0.55	0.3-1.25	0.12-0.65
Q500NQR1	0.12	0.75	2.00	0.025	0.008	0.25-0.55	0.3-1.25	0.12-0.65
Q550NQR1	0.16	0.75	2.00	0.025	0.008	0.25-0.55	0.3-1.25	0.65

Mechanical Properties

Carbon content (wt.%)	Microstructure	Properties	Examples
Low-carbon steel	< 0.25	Ferrite, pearlite	Low hardness and cost. High ductility, toughness, machinability and weldability	AISI 304, ASTM A815, AISI 316L
Medium-carbon steel	0.25 – 0.60	Martensite	Low hardenability, medium strength, ductility and toughness	AISI 409, ASTM A29, SCM435
High-carbon steel	0.60 – 1.25	Pearlite	High hardness, strength, low ductility	AISI 440C, EN 10088-3

Packaging and transportation

8unit in 120GP container , 12units in 140HQ container, Fumigated wood tray and 10mm wire fixed.

Application Areas

New steel materials are used in food processing, chemical, construction, automotive, marine, and medical industries, offering durability, corrosion resistance, and strength.

Stainless Steel in Construction & Building

Stainless steel is a vital material for commercial buildings, bridges, and airports, used in structural frames, roofing, wall cladding, handrails, elevator interiors, and even decorative handicrafts.

Stainless Steel in Automotive Manufacturing

Various grades of stainless steel are used to make car bodies, grilles, exhaust systems, fuel tanks, wheel axles, and bearings, thanks to their rust resistance and durability.

Stainless Steel in Chemical & Oil Industries

Ideal for transporting chemicals and liquids, it’s widely used in pipelines, storage tanks, pumps, and processing vessels in chemical, oil, and gas sectors.

Stainless Steel in Medical Applications

With hygienic and corrosion-resistant properties, it’s essential for medical equipment like operating tables, surgical tools, and sterile processing instruments.

Stainless Steel in Household Appliances

Around 75% of home appliances rely on stainless steel, including ovens, refrigerators, washing machines, kitchen hardware, and TV frames.

Stainless Steel in Furniture & Daily Use

Stainless steel coils and sheets are versatile for daily items: trash cans, benches, tables, bookshelves, advertising displays, and outdoor furniture.

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