Corrosion-Resistant Aluminum Alloy Sheet for Tank Fabrication

Product Specifications

Technical details and manufacturing context for Corrosion-Resistant Aluminum Alloy Sheet

Definition

Corrosion-resistant aluminum alloy sheet is a semi-finished industrial material specifically engineered for manufacturing metal tanks, reservoirs, and containers. This material offers superior resistance to chemical corrosion, oxidation, and environmental degradation compared to standard aluminum alloys. It serves as a critical raw material in B2B supply chains for fabricators producing storage tanks for chemicals, water treatment systems, and food processing equipment. The alloy's composition is optimized to maintain structural integrity while providing excellent weldability and formability for complex container geometries. The material is available in standard thicknesses from 0.5 to 6.0 mm, widths from 1000 to 2000 mm, and lengths from 2000 to 6000 mm, conforming to GB/T 3880. Mechanical properties include tensile strength of 180–330 MPa, elongation of 10–25%, and Brinell hardness of 45–110 HB, tested per GB/T 228.1 and GB/T 231.1. Common alloy grades include 5052, 5083, and 6061, with tempers such as O, H32, H34, H36, H38, and H112. The material passes ASTM B117 salt spray testing for over 500 hours without pitting. Surface finishes include mill, brushed, or embossed. Flatness is maintained at ≤3 mm/m. Density ranges from 2.66 to 2.80 g/cm³. Operating temperature is -20 to 150°C, above which mechanical properties degrade. Alloys 5083 and 6061 are readily weldable using TIG/MIG methods. This product is a raw material; fabricators must verify that the specific alloy, temper, and dimensions meet their application requirements and applicable standards. Always confirm model-specific values and standards with the legal manufacturer or supplier before procurement.

Working Principle

The material's corrosion resistance is achieved through alloying elements that form protective oxide layers and microstructural modifications that inhibit electrochemical degradation processes. These elements, including magnesium, silicon, and manganese, promote the formation of a stable, adherent oxide film on the surface, which acts as a barrier against corrosive agents. The microstructure is refined to reduce susceptibility to intergranular corrosion and stress corrosion cracking. The protective layer self-repairs in the presence of oxygen, maintaining long-term durability. The alloy composition is balanced to ensure that the protective mechanisms do not compromise mechanical strength or formability, allowing the sheet to be shaped into complex tank geometries without losing corrosion resistance.

Common Materials

Aluminum, Magnesium, Silicon, Manganese

Technical Parameters

Parameter	Typical range	Notes & selection driver
ThicknessRequired	0.5–6.0 mm	Standard sheet thickness for tank fabricationGB/T 3880
WidthRequired	1000–2000 mm	Standard sheet width dimensionGB/T 3880
LengthRequired	2000–6000 mm	Standard sheet length dimensionGB/T 3880
Tensile StrengthRequired	180–330 MPa	Ultimate tensile strength at room temperatureGB/T 228.1
ElongationRequired	10–25 %	Percentage elongation at fractureGB/T 228.1
Hardness	45–110 HB	Brinell hardness numberGB/T 231.1
Alloy Grade	5052, 5083, 6061	Marine-grade alloys for corrosion resistanceGB/T 3190
Temper	O, H32, H34, H36, H38, H112	Temper affects strength and formabilityGB/T 16475
Corrosion Resistance	Passes ASTM B117 salt spray test	500+ hours without pittingASTM B117
Surface Finish	Mill finish, brushed, or embossed	Custom finishes available
Flatness	≤3 mm/m	Ensures uniform weldingGB/T 3880
Density	2.66–2.80 g/cm³	Alloy-dependent
Operating Temperature	-20–150 °C	Mechanical properties degrade above 150°C
Weldability	Excellent (TIG/MIG)	Alloys 5083 and 6061 are readily weldable

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Aluminum Matrix Part
Primary structural element providing base mechanical properties

Material: Pure aluminum with controlled impurities
Alloying Elements Part
Enhance corrosion resistance and mechanical properties

Material: Magnesium, silicon, manganese in controlled proportions
Surface Oxide Layer Part
Natural protective barrier against environmental degradation

Material: Aluminum oxide (Al₂O₃)

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Corrosion-Resistant Aluminum Alloy Sheet.

Manufacturers of Corrosion-Resistant Aluminum Alloy Sheet

Manufacturer profiles associated with Corrosion-Resistant Aluminum Alloy Sheet.

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Frequently Asked Questions

What standards apply to this aluminum alloy sheet?

The sheet is referenced against GB/T 3880 for dimensions, GB/T 228.1 for tensile testing, GB/T 231.1 for hardness, GB/T 3190 for alloy grades, and GB/T 16475 for temper designations. ASTM B117 is used for salt spray corrosion testing. These standards are procurement references; actual compliance must be confirmed with the supplier.

Can this sheet be welded for tank fabrication?

Alloys 5083 and 6061 are noted as readily weldable using TIG or MIG methods. However, weldability depends on the specific alloy, temper, and thickness. Always consult the manufacturer's welding guidelines and verify the suitability for your application.

What is the maximum operating temperature?

The operating temperature range is -20 to 150°C. Above 150°C, mechanical properties may degrade. For high-temperature applications, verify the specific alloy's performance with the supplier.

How does the corrosion resistance perform in salt spray testing?

The material passes ASTM B117 salt spray testing for over 500 hours without pitting. This indicates good resistance to saline environments, but actual performance depends on the alloy and surface finish. Confirm with the manufacturer for your specific conditions.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 10 bar design pressure for tank applications
other spec:	Max slurry concentration: 40% solids by weight, pH range: 4.5-9.0 for continuous service
temperature:	-50°C to 150°C continuous, 200°C peak (short-term)

Corrosion-Resistant Aluminum Alloy Sheet

Product Specifications

Industry Taxonomies & Aliases

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards