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5251 Aluminium Alloy — Technical Data

A formable aluminium sheet and plate alloy referenced in the annealed condition. Cold-work conditions require their own property data.

Selected indicative supplier facts; critical specification values require independent confirmation. Keep typical values, source minima and composition limits distinct. Reference records are not certificates or design allowables.

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Grade, forms and temper conditions

5000 series · Sheet and plate

Reviewed temper examples: O. These do not establish every possible alloy-form-temper supply combination.

Physical reference properties
PropertyValueUnitTemper / formConditionBasis / verificationSource ID
Density2690kg/m³Not specified / Sheet and plateTemperature not specified; supplier indicative referencetypical / single-sourceaalco5251
Mechanical reference properties — MPa
TemperProduct formThickness / specimen conditionTensile MPaYield MPaBasisSource ID
OSheet and plate0.2–50.00 mm; BS EN 485-2:2008 cited by supplier160–20060indicative-rangeaalco5251

O / Sheet and plate: Supplier cites historic EN edition; not an authorized standard table or certification; checked 2026-10-14.

Chemical composition

Composition coverage remains pending source review.

Fabrication and material selection

Only the O-condition strength row is imported. A heading elsewhere in the source names a different grade, so no additional temper compatibility is inferred from that section.

Applications and product forms

Confirm the end-use requirements against the supplied material and governing specification.

Standards and acceptance

Identify the governing product specification by the actual form and manufacturing route. A grade designation alone does not establish compliance or equivalence. Confirm the edition, required condition, inspection and dimensional limits through the supplier and an authorized specification.

Product-specific standard scopes · Compare material conditions · Engineering calculators

Technical questions

Are typical values delivery limits?

No. A typical reference value describes the source condition; it is not a guaranteed minimum for a delivered lot.

Which temper and thickness should I compare?

Compare the same material form, temper, thickness/test condition, unit and value basis. Different conditions cannot be silently treated as interchangeable.

Technical sources and verification

Selected reference facts checked 14 October 2026. Source values apply to their stated material condition and are not certification of supplied stock.