What is Q345 steel? Applications of Q345 steel in industry

Q345 steel is an essential material in the construction and equipment manufacturing industry, especially in Vietnam. With superior durability and high load-bearing capacity, Q345 steel has become a top choice for many practical applications. At Naltako, we take pride in applying Q345 steel to our hydraulic lifting products, providing quality and efficient solutions for businesses. This article will provide detailed information about Q345 steel and how Naltako integrates this material into our equipment.

What is Q345 Steel in Industry?

Q345 steel is a low-alloy structural steel produced according to China’s GB/T1591 standard, notable for a minimum yield strength of 345 MPa and a tensile strength of 470-630 MPa. It is an ideal material for applications requiring high strength and good load-bearing capacity in steel structure production systems. Thanks to these characteristics, Q345 steel is widely used in construction, bridges, shipbuilding, and industrial machinery manufacturing.

At Naltako, we utilize Q345 steel to manufacture lifting equipment such as scissor lifts, hydraulic lift tables, and cargo lifts. For instance, scissor lifts are made from Q345 steel plates with a yield strength of 345 MPa, ensuring they can handle heavy loads up to 2 tons without deformation. This helps the equipment operate stably and safely in industrial workshops. Applying Q345 low-alloy steel not only enhances quality but also optimizes costs, bringing long-term value to customers.

SS400 steel plate and industrial applications

What is the Chemical Composition of Q345 Steel?

Q345 steel possesses a strictly controlled chemical composition, providing outstanding toughness and load-bearing capacity. The main elements include:

• Carbon (C): 0.14-0.20% – Ensures sufficient hardness.
• Manganese (Mn): 1.00-1.60% – Enhances load-bearing capacity and wear resistance.
• Silicon (Si): 0.55% – Improves strength.
• Phosphorus (P): ≤ 0.03% – Limited to avoid brittleness.
• Sulfur (S): ≤ 0.03% – Reduces the risk of weld cracking.

Additionally, Q345 steel includes alloying elements such as Vanadium (V), Niobium (Nb), and Titanium (Ti), which enhance the tensile strength and low-temperature resistance of Q345 steel. This combination makes Q345 steel easy to weld and suitable for harsh environments in the industrial material supply chain.

Applications of Q345 Steel in Construction and Industry?

Thanks to the superior tensile strength and yield point of Q345 steel, this material is widely applied in various fields:

• Factory construction: Used for steel frames, columns, and beams in building material systems.
• Steel structures: Used for bridges and pre-engineered steel buildings.
• Lifting equipment: Ensures safety for cranes and industrial devices.
• Pressure vessels: Withstands high pressure in production.

Naltako integrates Q345 construction steel into products such as forklift loading ramps and mini cranes. For example, forklift ramps are made from 10mm thick Q345 steel plates, withstanding loads up to 10 tons, suitable for warehouses and seaports. Using Q345 hot-rolled steel not only increases equipment lifespan but also reduces maintenance costs, bringing economic benefits to businesses.

How do Q345 and SS400 Steels Differ?

Q345 and SS400 are both popular in the steel industry, but there are distinct differences:

• Yield strength: Q345 steel reaches 345 MPa, superior to SS400 (245 MPa).
• Tensile strength: Q345 steel ranges from 470-630 MPa, while SS400 is only 400-510 MPa.
• Applications: Q345 steel is suitable for heavy-duty structures, while SS400 is often used for light structures.

Naltako prioritizes Q345 steel for equipment like hydraulic pallet jacks, ensuring superior performance. For instance, a hydraulic pallet jack made from Q345 steel can handle loads up to 3 tons without deformation, which SS400 would struggle to meet. This difference helps Naltako’s equipment operate stably in harsh environments, confirming quality in steel structure production systems.

Need advice on the right steel material for your equipment? Contact us via email at info@naltako.vn for detailed support from Naltako!

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What are the Quality Grades of Q345 Steel?

Q345 steel is divided into quality grades to meet diverse operating conditions:

• Q345A: No impact testing, used for basic applications.
• Q345B: Tested at 20°C, suitable for normal environments.
• Q345C: Can withstand 0°C, used in moderately cold conditions.
• Q345D: Tested at -20°C, ideal for cold storage.
• Q345E: Withstands low temperatures down to -40°C, suitable for extreme environments.

Naltako flexibly uses Q345A, Q345B, and Q345C steel grades depending on the product. For example, tilting lift tables made from Q345D steel can withstand temperatures of -20°C, ensuring stable operation in cold storage. Choosing the right steel grade according to the GB/T1591 standard helps increase the durability and safety of the equipment.

Want to partner with Naltako to own high-quality Q345 steel equipment? Contact us now at 0981.977.898 for advice and a quote today!