TU1/20g composite steel plate is a specialized bimetallic material that combines the high conductivity, corrosion resistance, and thermal transfer properties of TU1 pure copper with the structural strength, high-temperature stability, and cost-effectiveness of 20g boiler steel. This composite optimizes performance for applications requiring both mechanical robustness and functional surface properties (e.g., conductivity, heat transfer). Below is a detailed overview:

Material Composition and Properties

1. Cladding Material: TU1 (Pure Copper)

Type: High-purity oxygen-free copper (GB/T 5231-2012, equivalent to ASTM C10200) .

Chemical Composition: Cu ≥99.95%, with trace impurities (Ag ≤0.002%, Bi ≤0.001%, Pb ≤0.003%, etc.) to ensure purity .

Mechanical Properties:

Tensile strength: 200–240 MPa .

Yield strength (0.2% offset): ≥60 MPa .

Elongation: ≥45% (for annealed 状态) .

Functional Properties:

Electrical conductivity: ≥98% IACS (International Annealed Copper Standard) .

Thermal conductivity: ~391 W/(m·K) at 20°C .

Corrosion resistance: Excellent in non-oxidizing acids (e.g., dilute sulfuric acid), freshwater, and dry environments; susceptible to ammonia and strong oxidizing acids .

Advantages: Superior electrical/thermal conductivity, ductility, and solderability.

2. Base Material: 20g (Boiler Steel)

Type: Low-alloy high-temperature structural steel (GB/T 713-2014, equivalent to ASTM A515 Grade 60 for boiler applications) .

Chemical Composition: C (0.16–0.24%), Mn (0.35–0.65%), Si (0.17–0.37%), S ≤0.035%, P ≤0.035% .

Mechanical Properties:

Yield strength: ≥245 MPa (for thickness ≤16 mm) .

Tensile strength: 400–540 MPa .

Elongation: ≥24% .

High-Temperature Performance: Stable at temperatures up to 450°C, with good creep resistance and oxidation resistance under cyclic heating .

Advantages: Excellent weldability, high structural integrity under pressure, and cost-effectiveness for heavy-duty applications.

Manufacturing Process

TU1/20g composite plates are produced via roll bonding or explosive welding, ensuring a metallurgical bond between copper and steel:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Why Choose Us?
We take pride in our ability to provide custom solutions for our customers' unique needs.
We analyze and compare the previous products and the current technical situation of our TU1/20g Composite Steel Plate, and develop new technical specifications and processes.
Our customers trust us to deliver high-quality Cold-rolled Steel products on time and on budget.
We strictly implement the warm and thoughtful after-sales service, adhere to the development of good professional ethics.
We offer a wide range of Cold-rolled Steel products to meet diverse customer needs.
We adhere to the customer-centric and brand-oriented business philosophy, and continue to provide customers with reliable and excellent products and services.
Our factory is committed to upholding the highest standards of safety and quality.
All staff of our company and all departments work together to combine business management, professional technology, quantitative statistical methods and ideological education.
Our Cold-rolled Steel products are known for their durability and reliability.
Relying on the superior conditions and strong advantages of mass production, we are able to meet the different needs of our customers.

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