Applications of B30 Copper Steel Clad Plate

What Is a B30 Copper Steel Clad Plate?
Understanding the Structure and Composition
A B30 copper steel clad plate is a bimetallic composite material made by bonding a layer of B30 copper alloy with a carbon or stainless steel base, typically through explosion welding or hot rolling. This unique structure combines the superior conductivity and corrosion resistance of B30 copper with the mechanical strength and cost-effectiveness of steel.

What Is B30 Copper Alloy?
B30 is a marine-grade copper-nickel alloy, also known as CuNi30Mn1Fe, containing approximately 70% copper, 30% nickel, along with iron and manganese. This composition makes it especially resistant to seawater corrosion, erosion, and biofouling—ideal for use in heat exchangers, condensers, and marine piping systems.

Why Choose B30 Copper Steel Clad Plate?
1. Excellent Corrosion Resistance
B30 copper cladding offers excellent resistance to:

Seawater corrosion

Sulfide and ammonia stress corrosion

Biological fouling in marine environments

This makes the clad plate a preferred material in shipbuilding, offshore oil platforms, and desalination systems.

2. Outstanding Mechanical Strength
Thanks to its steel substrate, the B30 copper steel clad plate maintains high mechanical strength, pressure resistance, and impact toughness—suitable for high-pressure heat exchanger shells, pressure vessels, and industrial pipelines.

3. Enhanced Thermal and Electrical Conductivity
The B30 copper surface layer provides excellent thermal and electrical conductivity, critical for:

Power plants

Thermal energy systems

Electric contact components

4. Cost Optimization Through Cladding Technology
Instead of using solid copper or solid B30 alloy, manufacturers can achieve similar performance at a lower cost using clad technology, which minimizes copper usage while maintaining surface performance.

Applications of B30 Copper Steel Clad Plate
Marine and Offshore Engineering
B30 copper is widely used in marine environments. When clad onto steel, it enhances the service life of seawater cooling systems, marine condensers, pumps, and heat exchanger tubesheets.

Power Generation and Thermal Systems
The B30 copper steel clad plate is ideal for:

Steam turbine condensers

Thermal power station cooling units

Electric boiler systems

Its high heat transfer efficiency and corrosion resistance extend the durability of thermal energy components.

Chemical and Petrochemical Industry
In corrosive environments, such as refineries, chemical reactors, and gas scrubbers, the B30 clad plate provides the corrosion barrier needed to ensure safety and longevity.

Desalination and Water Treatment
With its resistance to seawater and brine corrosion, this clad material is often used in:

Multi-stage flash (MSF) desalination

Reverse osmosis (RO) pretreatment

Brine circulation systems

How Is B30 Copper Steel Clad Plate Manufactured?
Explosion Bonding Process
The most common method is explosion bonding, which uses a controlled detonation to bond the copper and steel layers at the molecular level. This technique ensures:

Metallurgical bonding without melting

Uniform thickness and strong adhesion

No intermetallic compounds at the interface

Hot Rolling Technology
Another method is hot roll cladding, where the copper and steel are heated and pressed together, forming a strong bond through thermal diffusion and pressure welding.

Each method offers unique advantages depending on product size, required thickness, and performance specifications.

Product Specifications and Standards

Common Specifications

Parameter	Value
Copper Alloy Grade	B30 (CuNi30Mn1Fe)
Steel Base	Q235B / Q345R / 304 / 316L
Cladding Thickness	0.5mm to 5mm
Total Plate Thickness	3mm to 50mm
Bonding Method	Explosion + Rolling
Surface Finish	Polished / Brushed / Custom

 

Standards Compliance

• GB/T 13238 (China National Standard for Metal Clad Plates)

• ASTM B432 (Nickel-Copper Clad Plate Standards)

• ASME Boiler and Pressure Vessel Code

Benefits Over Conventional Materials

Feature	B30 Copper Steel Clad Plate	Solid Copper Plate	Carbon Steel Plate
Corrosion Resistance	★★★★★	★★★★☆	★☆☆☆☆
Mechanical Strength	★★★★☆	★★☆☆☆	★★★★☆
Heat Conductivity	★★★★☆	★★★★★	★★☆☆☆
Cost Efficiency	★★★★☆	★☆☆☆☆	★★★★★

This comparative advantage highlights why B30 copper steel clad plates are increasingly favored in industries requiring both durability and cost-effectiveness.​​​​​​​​​​​​​​

Quality Control and Inspection
Key Quality Measures
Ultrasonic testing to detect bond flaws

Shear strength testing to confirm metallurgical bonding

Corrosion resistance testing using seawater simulation

Bending and flattening tests to assess mechanical behavior

Manufacturers typically provide material certificates, third-party inspection reports, and non-destructive testing results to assure quality.

FAQs About B30 Copper Steel Clad Plate
Is B30 copper the same as CuNi30?
Yes. B30 is the Chinese designation for CuNi30Mn1Fe, a copper-nickel alloy known for excellent seawater resistance and commonly used in heat exchangers and marine structures.

How long does B30 copper cladding last in marine environments?
With proper maintenance, the clad layer can resist seawater corrosion for 20–30 years depending on the operating conditions.

Can the plate be welded or machined?
Yes. B30 copper steel clad plates can be machined and welded using proper techniques, with care to avoid delamination or damaging the clad surface.

Why Work with Us for B30 Copper Steel Clad Plate?
Our Manufacturing Strengths
Over 15 years of experience in bimetallic clad materials

Full control over explosion bonding and hot rolling processes

Customized thickness, width, and length available

Compliant with international standards and client specifications

Industries Served
Marine & Shipbuilding

Energy & Utilities

Petrochemical Processing

Water Desalination Plants

Heat Exchange Manufacturing.

By choosing B30 copper steel clad plates, companies can reduce costs, extend equipment life, and ensure operational efficiency even in the harshest environments.

Contact Us
Looking for a reliable supplier of B30 copper steel clad plates?

📧 Email: zh@baojiti.com.cn
🌐 Website: www.shenaocladplate.com