Titanium-Stainless Steel Composite Sheet

Titanium-Stainless Steel Composite sheet (total thickness is about 2mm+6mm) is a high-performance composite material featuring titanium as the cladding layer and stainless steel as the substrate, bonded through specialized processes in metallurgic. It combines the core advantages of both metals while overcoming the limitations of either material alone, finding extensive application across multiple high-end industries.

I. Introduction:

The Titanium-steel composite sheet is similar to the Titanium-steel composite sheet, but thinner than it, and the processing difficulty will be greater, is a novel metallic material formed by bonding titanium or titanium alloy as the cladding layer to carbon steel or low-alloy steel as the substrate through specialized processes. It combines titanium's exceptional corrosion resistance with steel's high structural strength while significantly reducing the cost of pure titanium materials, making it indispensable across multiple heavy industrial sectors.

II.  Structure and Composition of Titanium-steel composite sheet:

The core construction of titanium-steel composite sheet is a layered metallurgical bond structure of “facing layer (titanium/titanium alloy) + substrate (carbon steel/low-alloy steel).” A transition layer may be added in certain applications. The entire structure is bonded without adhesives, achieving atomic-level bonding through specialized processes. The structural design focuses on “functional zoning and complementary properties.”

III. Mainstream Preparation Processes:

1. Explosive Bonding Method: This widely adopted industrial technique employs explosive charges to generate shock waves traveling thousands of meters per second. Under instantaneous high temperature and pressure, titanium and steel sheet undergo plastic deformation while removing surface oxides and gases, achieving cold metallurgical bonding. This process produces thick sheet that can be hot-rolled to 4mm thickness, making the resulting sheet suitable for chemical equipment applications.

2. Thick plate Rolling Method: Titanium sheet and steel plate are assembled as an embedded billet with suitable intermediate inserts. They undergo electron beam welding under high vacuum, followed by heating and forced rolling to target thickness using a thick sheet mill. The final product is cut and separated. sheet produced by this method serve as corrosion-resistant structural materials, such as tube sheet in power plant condensers.

3. Continuous Hot Rolling Method: Similar to the thick sheet rolling method, but steel sheet are inserted between the layers. Arc welding is performed under atmospheric conditions, followed by rolling through a continuous hot rolling mill to produce thin sheet in coil form. These thin sheet are primarily used in marine civil engineering applications, such as linings for offshore steel structures.

IV. Mechanical Properties Parameters:

V. Core Advantages

1. Exceptional corrosion resistance: The titanium layer withstands harsh media like acids, alkalis, and seawater, making it suitable for demanding environments in chemical processing and marine applications.

2. Cost-effective: Using steel as the substrate reduces overall costs while avoiding the high expenses associated with pure titanium materials.

3. Balanced mechanical properties: The steel substrate ensures structural strength and rigidity, meeting requirements for pressure-bearing and load-bearing structures.

4. Wide applicability: Replaces pure titanium sheet in vessels, heat exchangers, pipelines, and other equipment, balancing performance and economy.

VI. Application Fields: Petrochemical, energy and power, marine and military sectors, plus emerging industries. In these domains, titanium-steel composite sheet play an indispensable role by reducing costs while extending equipment lifespan.

1. Petrochemical Sector: TA1/Q345R titanium-steel composite sheet used in oil pipelines exhibit over 25 years of H₂S corrosion resistance, reducing full-cycle costs by 40%.

2. Energy and Power Sector: Replacing glass flake linings in desulfurization towers with TA2/SA516Gr.70 titanium-steel composite sheet extends maintenance cycles from 3 to 10 years;

3. Marine and Military: The pressure hull of Type 093 nuclear submarines, constructed with titanium-steel composite sheet, achieves a 30% weight reduction while enabling magnetic stealth and enhanced navigation performance.

4. Emerging Sectors: Explosion-proof walls in lithium battery workshops using TA1/304 titanium-steel composite sheet with graphene additives increased impact absorption capacity by 40%, achieving 3.2 times the energy absorption value of traditional materials and meeting explosion-proof safety requirements.

VII. Development Significance and Prospects:

The successful development of titanium-steel composite sheet not only propels industry advancement but also represents a technological breakthrough. It is both a product of industry evolution and an inevitable requirement of application fields.