What are some common types of alloy plates? How do I choose the right type of alloy plate?

steel plate manufacturing process factory

I. Common Alloy Plates Classified by Material

1.Aluminum Alloy Sheet: Made with aluminum as the base material and added with elements such as copper, magnesium, silicon, zinc, and manganese, it features lightweight, high strength, corrosion resistance, easy processing, and recyclability. Depending on the alloy system, it can be divided into:

1xxx series alloys (e.g., 1050, 1100): High purity (>99%), good electrical conductivity, 

commonly used in power transmission and chemical containers.

6 series alloys (e.g., 6061, 6063): Contain magnesium and silicon, moderate strength,

 can be extruded, widely used in building curtain walls and window structures.

7 series alloys (e.g., 7055): Zinc as the main element, tensile strength exceeding 710 

MPa, used in aerospace structural components

2.Alloy steel plate

Adding elements such as chromium, manganese, nickel, and molybdenum to carbon

 steel improves its strength, wear resistance, high-temperature resistance, and corrosion

 resistance. Common types include:          

    Low-alloy high-strength steel (e.g., Q355B): Used in bridges, pressure vessels, and 

engineering machinery.   Chromium-molybdenum steel (e.g., 35CrMo, 42CrMo): Possesses excellent hardenability

 and high-temperature strength, suitable for key mechanical components such as shafts and 

gears.

  Heat-resistant alloy steel (e.g., 12Cr1MoV): Can operate stably under high temperature 

and high pressure environments, commonly used in boilers and power plant equipment.

3.Nickel-based wear-resistant alloy plate

Containing elements such as nickel, chromium, and molybdenum, it possesses excellent high-temperature strength, oxidation resistance, and corrosion resistance, making it suitable for extreme working conditions.

  It can be used continuously at temperatures below 700℃ and is widely used in 

aircraft engine turbine disks and petrochemical reactor linings.

  Its wear resistance is 3–5 times higher than that of ordinary steel, and it is applied

 in mining machinery, metallurgical equipment, and other fields.

  The global market is projected to reach $7.26 billion in sales by 2025, and laser 

cladding coating technology is driving its performance upgrades.

4.Titanium-magnesium alloy plate

Titanium alloy sheets (such as TC4 and Ti2AlNb): Low density, high specific strength, 

and temperature resistance up to 500–900℃, used in aerospace electronic components 

and aircraft skin.

  Magnesium alloy sheets: One of the lightest structural metal materials, used in consumer 

electronics casings and lightweight automotive components, contributing to energy conservation 

and emission reduction.

5.Special function alloy plate

Titanium-zinc sheet: Made from high-purity zinc with added titanium and copper, its surface 

has a self-healing zinc carbonate protective layer that allows minor scratches to repair themselves;

 over time, it forms an elegant patina and is widely used in high-end building roofing systems.

 Composite steel sheet: Two metals are combined through welding or rolling. For example,

 stainless steel composite sheets combine corrosion resistance with the strength of a low-cost

 substrate and are used in food machinery and shipbuilding.

high strength alloy steel plate industrial use

II. How to choose the right type of alloy plate?

When selecting alloy plates, a systematic evaluation should be conducted based on four 

core indicators: strength, corrosion resistance, processability, and cost, taking into account

 the specific application scenario. The following are the selection logic and recommended 

materials for different application areas:

1.Selection Recommendations Based on Application Scenarios

Building Structure and Curtain Wall System

• Key Requirements: Good formability, weather resistance, aesthetically pleasing surface,

 and moderate strength

• Recommended Material:6063 aluminum alloy plate Easy to extrude into complex cross-sections,

 suitable for door and window frames and curtain wall frames.

• Resistant to atmospheric corrosion; surface can be anodized for stable color.

• Moderate cost and excellent processing performance.

Alternative Option: Aluminum-Magnesium-Manganese Alloy Sheet (e.g., 3004-H16), used for

 large-span roofs; tensile strength reaches 250–350 MPa; low coefficient of thermal expansion,

 adaptable to temperature variations.

2. Transportation and New Energy Vehicles

Key requirements: lightweight, high strength, corrosion resistance, weldability

Recommended materials: 6061-T6 aluminum alloy sheet or 5xxx/6xxx series aluminum alloy sheet

With a density approximately one-third that of steel, it significantly reduces overall vehicle 

weight and improves

 driving range.

Tensile strength ≥180MPa, suitable for vehicle body structural components, battery trays, 

and crash beams.

Good weldability, suitable for automated production processes.

Note: If high corrosion resistance is required, surface anodizing or coating treatment is recommended.

3. Aerospace and High-end Manufacturing

Key requirements: Ultra-high strength, high-temperature stability, lightweight, and fatigue resistance.

Recommended materials: 7075 aluminum alloy sheet (super hard aluminum) or 2024 aluminum alloy sheet

 7075-T6 has a tensile strength of 500–570 MPa and is used for aircraft skin, wing spars, and rocket casings.

  2024 aluminum alloy is used for aircraft structures, rivets, and propeller components; it has high strength 

and good heat resistance.

  Note: 7-series alloys have poor weldability and are typically joined by riveting or adhesive bonding.

High-end alternative: Titanium alloy plates (such as TC4) are used in engine components and maintain high 

strength even 

4. Chemical Engineering and Marine Engineering

Key requirements: strong corrosion resistance, resistance to chloride ion attack, and long-term service stability.

Recommended materials: 5083 aluminum alloy sheet or nickel-based alloy sheet (such as Hastelloy)  

  5083 is an aluminum-magnesium alloy containing approximately 4.0–4.9% magnesium. 

It exhibits excellent corrosion resistance in marine environments and is widely used in 

ships and LNG carrier cargo tanks

Nickel-based alloys (such as Nickel 200) perform exceptionally well in alkaline media and 

are suitable for chemical reactors and nuclear power equipment.

 Hastelloy alloys (Ni-Cr-Mo series) demonstrate strong resistance to pitting corrosion in

 strongly acidic environments containing halide ions.

5. Electronic appliances and precision equipment

Key Requirements: Good electrical and thermal conductivity, easy to process, high dimensional accuracy

Recommended Materials: 1100/3003 aluminum alloy sheet or copper and copper alloy sheet

1100 is used for heat exchangers, nameplates, and reflectors; it has good formability and 

strong corrosion resistance.   

 Copper alloys have high electrical conductivity and are suitable for connectors and heat 

sinks, but they have high density and are more expensive.

  During processing, it is necessary to control welding defects such as hydrogen porosity

 and hot cracking.

2.Key Performance Indicator Comparison Reference

Index	Recommended materials	Typical values / performance
Strength	7075 aluminum alloy	Tensile strength ≥ 500 MPa
Corrosion resistance	5083 aluminum alloy, nickel-based alloy	The marine environment is stable and there is no tendency for stress corrosion cracking.
Machining performance	6061 aluminum alloy	It has good weldability and is easy to extrude, stamp, and bend.
Cost-effectiveness	6061 vs Magnesium Alloy	Magnesium raw materials are 45% cheaper for the same volume, but processing costs are 30% higher; therefore, overall cost-effectiveness needs to be weighed.

Note: Costs include not only raw material prices, but also processing difficulty, surface treatment, maintenance cycle, and recycling value. For example, although magnesium alloys are lighter, their corrosion protection costs are more than 1.5 times that of aluminum alloys.