Overview of Carbon Steel Plate

Carbon steel plates are fundamental materials used across various industries due to their strength, versatility, and cost-effectiveness. They are composed primarily of iron and carbon, with small amounts of other elements. These plates can be cut, formed, and joined in numerous ways to suit different applications, ranging from construction to manufacturing.

Features of Carbon Steel Plate

High Strength: Offers excellent mechanical properties for demanding applications.

Versatility: Suitable for a wide range of industrial uses including structural, machinery, and tooling.

Cost-Effective: Provides an economical solution without compromising on performance.

Ductility: Can be easily shaped or formed into desired configurations.

Durability: Resistant to wear and tear, ensuring long-lasting performance.

Weldability: Capable of being welded without loss of integrity or strength.

(Hot Rolled Carbon steel Q235/Q345/Q36 SS400/S235jr/S355jr/S355j2+N Mild carbon Ah36 Ship Building Sheet A36 Ss400 Cutting ASTM)

Specifications of Hot Rolled Carbon steel Q235/Q345/Q36 SS400/S235jr/S355jr/S355j2+N Mild carbon Ah36 Ship Building Sheet A36 Ss400 Cutting ASTM

Warm rolled carbon steel sheets are widely utilized in building and construction, shipbuilding, equipment, and structural applications as a result of their flexibility, strength, and cost-effectiveness. Common qualities include Q235, Q345, SS400, S235jr, S355jr, S355j2+N, AH36, A36, and ASTM-compliant variants, each customized for certain requirements.

** Q235 (GB/T700)**: A Chinese requirement moderate carbon steel with yield stamina ≥ 235 MPa. Consists of carbon (0.12– 0.20%), manganese (0.30– 0.70%), and trace silicon, sulfur, and phosphorus. Ideal for general architectural parts, structures, and equipment parts.

** Q345 (GB/T1591)**: Higher-strength low-alloy steel with yield stamina ≥ 345 MPa. Enhanced with manganese, silicon, and microalloying aspects (e.g., vanadium, niobium) for boosted weldability and durability. Made use of in hefty frameworks, bridges, and pressure vessels.

** SS400 (JIS G3101)**: Japanese basic architectural steel with tensile toughness 400– 510 MPa. Carbon content ≤ 0.29%, manganese ≤ 1.40%. Perfect for building and construction, braces, and non-critical components.

** S235jr/S355jr/S355j2+N (EN 10025-2)**: European non-alloy steels with return strengths of 235 MPa (S235jr) and 355 MPa (S355jr/S355j2+N). S355j2+N supplies better effect toughness at low temperatures. Used in building, transport, and industrial devices.

** AH36 (ASTM A131)**: High-strength shipbuilding steel with yield stamina ≥ 355 MPa and outstanding deterioration resistance. Contains controlled carbon (≤ 0.18%), manganese (0.90– 1.60%), and microalloys for aquatic settings.

** A36 (ASTM A36)**: Popular architectural steel in the U.S., return stamina ≥ 250 MPa, tensile toughness 400– 550 MPa. Carbon ≤ 0.29%, manganese ≤ 1.20%. Ideal for bridges, structures, and general construction.

** General Specifications **: Thickness ranges from 1.5 mm to 200 mm, sizes approximately 3,000 mm. Surface area coating is rougher than cold-rolled steel, with mild scaling. Tolerances follow ASTM A6/A6M or equal requirements.

** Handling **: Ideal for cutting (shearing, laser, plasma), bending, welding (SMAW, GMAW), and machining. Pre-treatment (shot blasting, priming) improves paint adhesion.

** Applications **: Building and construction beams, ship hulls, offshore platforms, tank, farming devices, and automobile chassis. These grades equilibrium toughness, ductility, and price, making them crucial for commercial and business projects needing resilience under modest stress. Compliance with ASTM, JIS, EN, and GB criteria makes sure global applicability.

(Hot Rolled Carbon steel Q235/Q345/Q36 SS400/S235jr/S355jr/S355j2+N Mild carbon Ah36 Ship Building Sheet A36 Ss400 Cutting ASTM)

Applications of Hot Rolled Carbon steel Q235/Q345/Q36 SS400/S235jr/S355jr/S355j2+N Mild carbon Ah36 Ship Building Sheet A36 Ss400 Cutting ASTM

Hot-rolled carbon steel grades such as Q235, Q345, Q36, SS400, S235jr, S355jr, S355j2+N, AH36, A36, and SS400 are widely used across industries due to their versatility, strength, and cost-effectiveness. These grades meet international standards like ASTM, JIS, EN, and shipbuilding specifications, ensuring reliability in demanding applications.

Q235 and Q345 (Chinese standards) are common in construction for beams, frames, and machinery components. Q235 offers good weldability for structural frameworks, while Q345’s higher strength suits bridges, vehicles, and heavy equipment. SS400 (Japanese standard) shares similarities with Q235, ideal for general structures, machinery parts, and automotive components due to its balance of strength and formability.

European grades S235jr, S355jr, and S355j2+N are engineered for construction and engineering. S235jr is used in buildings, pipelines, and lightweight structures, while S355jr and S355j2+N offer enhanced strength for heavy machinery, welded structures, and load-bearing components in corrosive environments.

AH36, a high-tensile shipbuilding steel, is critical for marine applications like hulls, decks, and offshore platforms due to its corrosion resistance and durability in harsh conditions. ASTM A36, a universal structural steel, is favored in bridges, buildings, and machinery for its excellent machinability and weldability.

These steels are processed via laser, plasma, or shear cutting, adhering to ASTM guidelines for precision and quality. Their adaptability supports fabrication into plates, bars, or custom shapes, meeting diverse project needs. In automotive manufacturing, grades like SS400 and S355jr form chassis parts and brackets, while Q345 and A36 serve in agricultural equipment and storage tanks.

Mild carbon steels like S235jr and Q235 excel in weldability and formability, making them suitable for furniture, fixtures, and low-stress components. Their cost-effectiveness and compliance with global standards ensure broad usability in residential, commercial, and industrial projects.

In summary, these hot-rolled carbon steels provide durable, economical solutions for construction, shipbuilding, machinery, and automotive sectors. Their mechanical properties, including yield strength and tensile resilience, align with international specifications, making them indispensable for structural integrity and performance in varied environments.

Company Introduction

Welcome to Wgraj, a premier global supplier of high-quality metal cladding solutions. We specialize in providing a wide range of metal cladding products, including aluminum, steel, and copper composites, designed to meet the diverse needs of architects, builders, and designers. Our commitment to innovation, durability, and aesthetic excellence ensures that our clients receive top-tier materials for their projects. With state-of-the-art manufacturing facilities and a dedication to customer satisfaction, we deliver reliable, cost-effective solutions worldwide. Partner with us for your metal cladding needs and experience unmatched quality and service.

If you have any questions, please feel free to contact us(nanotrun@yahoo.com).

Payment Methods

T/T, Western Union, Paypal, Credit Card etc.

Shipment Methods

By air, by sea, by express, as customers request.

5 FAQs of Hot Rolled Carbon steel Q235/Q345/Q36 SS400/S235jr/S355jr/S355j2+N Mild carbon Ah36 Ship Building Sheet A36 Ss400 Cutting ASTM

**1. What are Q235, Q345, SS400, S355jr, A36, and AH36 steel grades?**
These grades represent hot-rolled carbon steel used across industries. Q235 and Q345 are Chinese standards (GB/T) with yield strengths of 235 MPa and 345 MPa, respectively. SS400 is a Japanese standard (JIS) for general construction. S235jr, S355jr, and S355j2+N are European grades (EN 10025) with varying impact resistance; “+N” denotes normalized rolling. A36 is an ASTM structural steel, while AH36 is a high-strength shipbuilding steel per ASTM A131. Q36 aligns with marine applications, similar to AH36.

**2. Where are these steel grades commonly used?**
Q235/Q345 and SS400 are used in construction, machinery, and frames. S355jr/S355j2+N suit welded structures like bridges. A36 is popular in buildings and infrastructure. AH36/Q36 are marine-grade for ships and offshore structures due to corrosion resistance and toughness. SS400 is also used in automotive components.

**3. What are the strength and durability properties?**
Q235 offers moderate strength, while Q345 and S355 grades provide higher yield strength (345–355 MPa). AH36/Q36 have enhanced tensile strength (490-620 MPa) and withstand harsh marine environments. S355j2+N offers improved impact toughness at low temperatures. A36 has a yield strength of 250 MPa, balancing formability and durability. All grades are durable, with hot-rolling enhancing structural integrity.

**4. How are these steels cut and fabricated?**
Common methods include plasma, laser, oxy-fuel, and waterjet cutting. ASTM-compliant cutting ensures precision, especially for A36 and AH36. Shear cutting works for thinner sheets, while thicker plates may require thermal techniques. Proper edge treatment prevents stress corrosion, critical for shipbuilding steels like AH36.

**5. How do these grades differ in composition and application?**
Variations lie in carbon content, yield strength, and regional standards. Q235/Q345 (China) vs. SS400 (Japan) differ in manganese and silicon levels. European S355 grades include impact-test requirements, unlike SS400. AH36 has stricter chemical controls (nickel, chromium) for seawater resistance. A36 (ASTM) is a general-purpose grade, while S235jr is a European equivalent with lower carbon. Selecting a grade depends on regional standards, mechanical needs, and environmental exposure.

(Hot Rolled Carbon steel Q235/Q345/Q36 SS400/S235jr/S355jr/S355j2+N Mild carbon Ah36 Ship Building Sheet A36 Ss400 Cutting ASTM)