5251 Aluminium H22 Sheet & Plate Grade -…

Range

Sheet Size	Sheet Thicknesses	Plate Thicknesses
2000 x 1000	1.0mm - 1.5mm	4.0mm - 6.0mm
2500 x 1250	1.0mm - 3.0mm	4.0mm - 6.0mm
3000 x 1250	3.0mm	4.0mm - 6.0mm

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Related Specifications

Alloy 5251 corresponds to the following standard designations and specifications, although may not be a direct equivalent:

Al Mg2
Al 2.0Mg 0.3Mn

Temper Types

The most common tempers for 5251 aluminium are:

Properties

Chemical Composition

Chemical Element	% Present
Manganese (Mn)	0.10 - 0.50
Copper (Cu)	0.00 - 0.15
Magnesium (Mg)	1.70 - 2.40
Silicon (Si)	0.00 - 0.40
Zinc (Zn)	0.00 - 0.15
Chromium (Cr)	0.00 - 0.15
Titanium (Ti)	0.00 - 0.15
Other (Each)	0.00 - 0.05
Others (Total)	0.00 - 0.15
Iron (Fe)	0.00 - 0.50
Aluminium (Al)	Balance

Mechanical Property	Value
Proof Stress	120 Min MPa
Tensile Strength	190 - 230 MPa
Hardness Brinell	56 HB

General Physical Properties

Physical Property	Value
Density	2.69 g/cm³
Melting Point	625 °C
Thermal Expansion	25 x 10^-6/K
Modulus of Elasticity	70 GPa
Thermal Conductivity	134 W/m.K
Electrical Resistivity	0.044 x 10^-6 Ω .m

Applications

Boats
Panelling and pressings
Marine structures
Aircraft parts
Vehicle panels
Furniture tubing
Silos
Containers

Characteristics

Work hardening rapidly
Readily weldable
High corrosion resistance particularly in marine environments

Additional Information

Weldability

Process	Rating
Weldability - Gas	Very Good
Weldability - Arc	Very Good
Weldability - Resistance	Very Good
Brazability	Poor

Process	Rating
Workability - Cold	Very Good
Machinability	Average

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Disclaimer

This Data is indicative only and as such is not to be relied upon in place of the full specification. In particular, mechanical property requirements vary widely with temper, product and product dimensions. All information is based on our present knowledge and is given in good faith. No liability will be accepted by the Company in respect of any action taken by any third party in reliance thereon. Please note that the 'Datasheet Update' date shown above is no guarantee of accuracy or whether the datasheet is up to date.

The information provided in this datasheet has been drawn from various recognised sources, including EN Standards, recognised industry references (printed S online) and manufacturers' data. No guarantee is given that the information is from the latest issue of those sources or about the accuracy of those sources. Material supplied by the Company may vary significantly from this data but will conform to all relevant and applicable standards. As the products detailed may be used for a wide variety of purposes and as the Company has no control over their use; the Company specifically excludes all conditions or warranties expressed or implied by statute or otherwise as to dimensions, properties and/or fitness for any particular purpose, whether expressed or implied. Advice given by the Company to any third party is given for that party's assistance only and without liability on the part of the Company. All transactions are subject to the Company's current Conditions of Sale. The extent of the Company's liabilities to any customer is clearly set out in those Conditions; a copy of which is available on request.

Aluminium, Commercial Alloy5251 Aluminium H22 Sheet & Plate

Medium strength aluminium alloy with good ductility.

Range

Related Specifications

Temper Types

Properties

Alloy 5251

BS EN573-3

Sheet and Plate 0.2mm to 25mm

BS EN 485-2

Applications

Characteristics

Additional Information

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