Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of alloy 20 clad steel in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
Alloy 20 clad steel plate is a high-performance corrosion-resistant composite material combining the superior chemical resistance of Alloy 20 (Carpenter 20) with the mechanical strength and cost-effectiveness of carbon steel or stainless steel. Ideal for chemical processing, petrochemical, and marine applications, our Alloy 20 clad steel plates meet international standards including ASTM, ASME, and EN. Available in custom thicknesses, widths, and lengths, these plates are suitable for heat exchangers, reactors, and highly corrosive environments.

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High Quality
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Advanced Equipment
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Professional Team
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Custom Service
Products Description
Product Name: Alloy 20 Clad Steel Plate
Cladding Material: Alloy 20 (Carpenter 20)
Core Material: Carbon Steel, Stainless Steel
Standard: ASTM B462, ASTM B462M, ASME SB462
Form: Plate, Sheet
Titanium Layer Equivalent: 2 – 20 mm
Steel Core Thickness: 3 – 100 mm
Width: 500 – 2500 mm
Length: 1000 – 8000 mm (customizable)
Surface Finish: Mill finish, Pickled and Passivated
Application: Chemical reactors, heat exchangers, desalination, marine engineering
Available Specifications (Metric + Imperial)
| Cladding (Alloy 20) | Steel Core | Total Thickness | Width | Length | Standard |
|---|---|---|---|---|---|
| 2 – 10 mm | 3 – 50 mm | 5 – 60 mm | 500 – 2500 mm | 1000 – 8000 mm | ASTM B462, ASME SB462 |
| 5 – 15 mm | 5 – 60 mm | 10 – 75 mm | 1000 – 2000 mm | 2000 – 8000 mm | EN 10088 |
| 10 – 20 mm | 10 – 100 mm | 20 – 120 mm | 1500 – 2500 mm | 3000 – 8000 mm | ASTM B462 |
Features & Benefits
Superior Corrosion Resistance: Excellent resistance to sulfuric acid, hydrochloric acid, and other oxidizing agents.
High Strength & Cost Efficiency: Steel core reduces cost while maintaining mechanical integrity.
Long Service Life: Resistant to pitting, crevice corrosion, and intergranular attack.
Fabrication Friendly: Can be cut, bent, and welded with proper procedures.
Compliance: Meets ASTM B462, ASME SB462, and EN standards for international projects.
Products Applications
Chemical and petrochemical reactors
Heat exchangers, pressure vessels
Desalination and seawater treatment equipment
Marine engineering structures
Pharmaceutical and food processing equipment
Product Delivery & Packaging
Delivery Terms: FOB, CIF, CFR, DDP available.
Packaging:
Alloy 20 side protected with plastic film or kraft paper
Steel side coated with anti-corrosion oil
Wooden crates, pallets, or steel frames for safe transport
Custom packaging for oversized or sensitive plates
Inspection & Certification:
Material Test Certificates (MTC), third-party inspection (SGS/TUV/BV)
Ultrasonic/dye penetrant testing for cladding integrity
Lead Time:
Stock products: 2–4 weeks
Custom sizes/alloys: 4–8 weeks
For inquiries, pricing, or custom specifications, contact:
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734

FAQ
Q1: What is Alloy 20 Clad Steel Plate?
A1: Alloy 20 clad steel plate is a composite metal consisting of a corrosion-resistant Alloy 20 (Carpenter 20) layer metallurgically bonded to a steel core (carbon steel or stainless steel). This combination provides excellent corrosion resistance while maintaining mechanical strength and cost-efficiency.
Q2: What industries use Alloy 20 Clad Steel Plates?
A2: Common industries include:
Chemical and petrochemical processing (acid-resistant reactors, heat exchangers)
Marine engineering and desalination equipment
Pharmaceutical and food processing industries
Oil & gas and offshore platforms
Q3: What are the available standards for Alloy 20 Clad Steel Plates?
A3: Plates can be supplied according to:
ASTM B462 / B462M
ASME SB462
EN 10088
Customer-specified international standards (ISO, DIN, JIS)
Q4: How is the Alloy 20 layer bonded to the steel core?
A4: The cladding is typically achieved through high-pressure roll bonding at elevated temperatures. This creates a strong metallurgical bond without delamination or contamination, ensuring corrosion resistance and mechanical stability.
Q5: Can Alloy 20 Clad Steel Plates be welded?
A5: Yes, welding is possible but requires:
Proper selection of compatible Alloy 20 filler metals
Shielding gas (argon or inert gas) to prevent oxidation
Qualified welding procedures to maintain corrosion resistance
Q6: What is the maximum thickness available for the Alloy 20 layer?
A6: The Alloy 20 layer usually ranges from 2 mm to 20 mm, while the steel core can range from 3 mm to 100 mm. Custom thicknesses are available for specialized projects.
Q7: Can the plates be cut, drilled, or bent after cladding?
A7: Yes. Cutting and drilling should use carbide or coated tools to prevent material damage. Bending must follow recommended minimum radii to avoid cracking or delamination.
Q8: How do I ensure the cladding quality?
A8: Quality can be verified by:
Ultrasonic testing (UT) for internal bonding integrity
Dye penetrant testing (PT) for surface cracks
Material Test Certificates (MTC) from certified labs
Third-party inspection reports (SGS/TUV/BV) if required
Q9: What types of steel cores are available?
A9: Common cores include:
Carbon steel (low and medium carbon grades)
Stainless steel (304, 316, or custom grades)
Q10: How is Alloy 20 Clad Steel Plate packaged for shipping?
A10: Packaging includes:
Alloy 20 surface protected with film or kraft paper
Steel side coated with anti-corrosion oil
Secured on wooden pallets or steel frames
Customized packaging for oversized or sensitive plates
Q11: What is the typical lead time for Alloy 20 Clad Steel Plate?
A11:
Stock products: 2–4 weeks
Custom sizes or alloys: 4–8 weeks depending on specifications
Q12: Can Alloy 20 Clad Steel Plates withstand strong acids like sulfuric acid or hydrochloric acid?
A12: Yes, Alloy 20 is specifically designed for resistance to oxidizing acids, including sulfuric and hydrochloric acid, making it ideal for chemical processing applications.
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