40mm mild steel plate

Types of 40mm mild steel plate

As 40mm mild steel plate is such a useful material, it can be found in several different forms, each with its own characteristics and applications. Below are the most common types of mild steel plate.

Hot Rolled Steel Plate

Alibaba's hot rolled 40mm plates come in huge dimensions and, as such, are suited for structural applications. The process of rolling at high temperatures means that the steel is malleable enough to be formed into the required thick sheet without cracking. Also, hot rolling gives the plate a somewhat rough surface, however, it is extremely strong and has good weldability.

Cold Rolled Steel Plate

Unlike the previous plate type, cold rolled plates are manufactured by passing mild steel through room temperature rollers. While not as common for such thick plates, if needed, cold rolling improves tolerance so the plate can be extremely flat. The cold rolling also smooths the metal and makes it shiny, thus enhancing its appearance. This also helps resist corrosion and is more difficult to shape and bend compared to hot rolled plates.

High-Strength Low-Alloy Steel Plate

As the name shows, these plates are manufactured from mild steel with the addition of small amounts of alloys such as copper, nickel, and vanadium. They are thicker plates with potentially high strength but low weight. Often these plates are formed with corrugated surfaces to increase strength while saving weight.

Manganese Steel Plate

Manganese steel plates contain about 12-14% manganese, which is added to mild steel to increase hardness. These plates work-harden over time, so the surface becomes harder while the underlying metal remains somewhat softer. This makes it suitable for applications where the wear factor is critical.

Boiler Steel Plate

These plates are manufactured specifically to withstand high-pressure conditions, such as in boilers or pressure vessels. They are made with special treatments to endure high temperatures and internal stress without changing shape or developing cracks. Alibaba plates also often feature a special rolled finish to improve the bond with protective coatings.

Checkered Steel Plate

A checkered steel plate is a type of mild steel plate with raised patterns, typically diamond-shaped, for improved grip. These are also referred to as tread plates or floor plates. Common applications include truck beds, ramps, walkways, and work platforms, where slip safety is required.

Industry applications of 40mm mild steel plate

The strong and versatile mild steel 40mm plate permits it to be used in many industries. Below are the major applications for these plates.

Construction

Mild steel plates are pivotal in the construction industry. 40mm plate is used for beams, columns, and girders, supporting large structures. The plates are also welded into frames, creating strong bases for roofs, floors, and walls. A mix of strength, cost, and ease of welding makes it ideal for the critical tasks found in construction.

Automotive

Mild steel plates are used in automotive applications. Engine covers and chassis parts are some components that the plate is welded into. It can also be used to manufacture bodywork and automotive components that do not require corrosion resistance. It is favored primarily due to its decent strength and good workability compared to more expensive galvanized or stainless steel.

Manufacturing

The plate type is also widely used in the manufacturing industry. It is primarily used for producing equipment, machine frames, and parts. Due to its marked strength and ease of machining or welding, mild steel plate works well for fixtures, jigs, and tooling equipment. To protect the plate in certain applications, various finishes can be added, such as painting or galvanizing.

Shipbuilding

Mild steel plates are extensively used in shipbuilding as part of the hull and structural framework. 40mm plate is commonly used in the shipbuilding industry because it can withstand the harsh marine environment while providing strength. The plate's ability to be easily welded into large ships makes it a practical choice for this complex engineering task.

Heavy Machinery

Mild steel plates are extensively used in the heavy machinery industry. Large fabrication parts such as machinery frames and covers are constructed from the plates. They can withstand huge loads and impacts without bending or breaking, making them good materials for parts that will undergo heavy use. They can also be formed, punched, or machined to produce complex shapes and sizes for specific equipment.

Energy Sector

The energy sector uses mild steel plate in pipelines, tanks, and other structures. The ability to bear pressure and corrosion, as well as any chemicals in the trays and easy welding, are key in this application. 40mm plates in particular are used where thicker materials are required to provide additional strength in demanding conditions, such as in oil and gas extraction or storage tanks for energy-producing fluids.

Product specifications and features of 40mm mild steel plate

Technical specifications

• Thickness: 40mm mild steel plate is 40mm thick regardless.
• Length: Plates generally come in lengths of about 2,500 - 12,000mm.
• Width: The standard widths are 1,250 or 2,000mm.
• Tensile Strength: This type of plate has an average tensile strength of 370 - 550 MPa.
• Yield Strength: It features a yield strength of42-250 MPa.
• Elongation: The 40mm mild steel plate has an average elongation of about 20% in 50mm gauge length.

Features

• Workability: 40mm MS plates can be easily welded, machined, and formed to give complex shapes, making work easy in industrial applications.
• Cost-Effective: Compared to stainless or alloy steel, it comes cheaper for construction and manufacturing.
• Strength: The plates have great tensile strength, making them feasible for heavy-duty applications.
• Durability: The plates are robust to wear and tear and last in adverse environments.
• Corrosion Resistance: Mild steel must often be coated (e.g., galvanizing) to withstand rust.
• Homogeneity: The plates are typically consistent throughout, allowing for even loads across surfaces.

How to measure

It is actually quite simple to measure the thickness of a mild steel plate. So, to measure the thickness, simply use calipers or a micrometer to take a measurement at multiple points across the plate. It gives an average that shows how consistent the plate is in thickness. Various mild steel plate suppliers offer a convenient guide for buyers to ascertain measure in bulk ordering.

Maintenance and repair

Some plates have to be maintained more than others, mainly by welding or polishing they can last longer. Below are key maintenance tips for 40mm steel plates.

• Regular Inspections: Check for signs of wear like corrosion, cracks, or physical deformation, which are common in structures under stress.
• Corrosion Prevention: Depending on application, regularly paint, or apply other protective coatings to stop rust forming on exposed plates.
• Welding Repairs: For any worn areas, simply welding new steel in the affected areas will restore structural integrity and extend plate life.
• Surface Grinding: Use surface grinding to eliminate rust, dents, bend, or general wear and tear of the plate.
• Proper Storage: Store plates properly to avoid any unnecessary exposure to elements or environment. Keep in dry covered area free of moisture and water.

Quality and safety considerations of 40mm mild steel plate

As a key point in construction, manufacturing, and other strong industrial applications, 40mm mild steel plate needs certain quality and safety standards. Below are quality and safety considerations for these plates.

Quality Considerations

• Material Composition: Carbon steel plate must be of quality mild steel with a controlled carbon content of 0.05%-0.15% to ensure optimum toughness and strength.
• Thickness Tolerance: Plates should meet specified tolerances for no variation in thickness beyond industry standards, ensuring even loads across planted structure.
• Surface Quality: Watch for harmful surface defects like rust, scale, or oxidization that decrease bonding strength during welding.
• Welding Standards: Plates need clean welds without slag inclusions or cracks per AWS D1.1 standards to maintain integrity in welded structures.
• Mechanical Properties: Ensure yield and tensile strengths meet requirements to handle specified loads without permanent deformation or failure.
• Dimensional Accuracy: Plates must be flat, with no warping, and clearly cut to specified lengths and widths for proper fitting in building projects.

How to Ensure Safety

• Proper Handling: Use correct lifting and moving equipment - no manual handling - to prevent accidents from falling or mismanaged heavy weight.
• Lifting Gear: Ensure the safe use of slings and chains with padded hoods around the plate so as the load doesn't slip or break during hoisting.
• Welding Safety: Always wear required gear during plate welding - shield face, gloves, and protective clothing - to avoid sparks, fumes, or faulty electrical current injury.
• Training: Workers must be advised on correct techniques for positioning, fastening, and working safely with heavy steel plates in risk exposed environments.
• Regular Checks: Periodically inspect plates for superfluous wear and tear and any potential hazards to avoid risk of structure failing during operation.

Q&A

Q1: What is 40mm mild steel plate used for?

A1: The 40 mm thick steel plate is a standard heavy type used in mining industrial floor and roofs and iron frame work, piling and heavy construction work.

Q2: Is mild steel plates resistant to rust?

A2: Normal mild steel plate doesn't resist rust. It can be coated with elements like zinc to produce galvanized steel that resists rust.

Q3: Can buyers punch mild steel plate?

A3: Yes, the 40 mm mild steel plate can further be machined, drilled, or even welded simply to create construction elements.

Q4: Do mild steel plates come warp-free?

A4: After proper fabrication of mild steel plates, an experienced fabricator can minimize warping.

Q5: What should be used to protect mild steel from corrosion?

A5: Commonly used methods include applying paints, galvanizing, or coating it with zinc or other metals that form protective oxide layer.