Aluminum & Aluminum Alloys•Wrought Aluminum Alloys•

VERIFIED(Source-Verified)

6063 Aluminum

Primary Designation:AA 6063

Aliases:

AA 6063Architectural Aluminum

Mat Grades internal verification confirms source-backed fidelity and data integrity. It does not constitute external certification or guaranteed lot conformity. Read engineering disclaimer →

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Data Completeness:11 composition elements and 35 condition-specific property values cataloged.

Omitted fields represent unverified properties. "Missing is better than invented."

Key Engineering Properties

Representative source rows, qualified by their reported conditions. Inspect the tables below for all values, limits, and source notes.

Density

2.69 g/cm³TYPICAL · temperature not stated

Electrical Conductivity

58 % IACSTYPICAL · O Temper · temperature not stated

Thermal Conductivity

218 W/(m·K)TYPICAL · O Temper · temperature not stated

Melting Range (Solidus / Liquidus)

616 – 654 °C616 – 654 °F

Solidus: 616°C | Liquidus: 654°C

Composition Excerpt

Si 0.2–0.6 wt%Silicon (range)

Standard Elemental Basis: RANGE

Tensile Strength

90 MPaTYPICAL · O Temper · temperature not stated

Reported: 90

Engineering Summary

6063 is an architectural extrusion alloy (Al-Mg-Si) engineered for high extrudability, intricate cross sections, fine surface finish, and exceptional clear or color anodizing response.

Recognized Aliases

Source-backed commercial trade name and short designations cataloged in canonical data.

AA 6063Architectural Aluminum

6063 Aluminum Specifications & Designations

Standard Designations & Applicable Specifications — Semantically classified designations distinguishing primary standard identifiers, commercial trade names, and applicable specification references.

Direct Standard DesignationsDIRECT DESIGNATION

3 Primary Identifiers

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System	Identifier	Standard System Name	Classification Notes & Provenance
AAPRIMARY	6063	Aluminum Association	—Ref: Kaiser Aluminum Technical Engineering Datasheet
UNS	A96063	Unified Numbering System	—Ref: Kaiser Aluminum Technical Engineering Datasheet
ISO	AlMg0.7Si	International Organization for Standardization	—Ref: Kaiser Aluminum Technical Engineering Datasheet

Recognized Commercial Aliases & Trade NamesCOMMON ALIAS

2 Listed

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Recognized Name / Alias	Classification	Technical Usage & Context
AA 6063	Commercial Alias	Colloquial or commercial industry synonym
Architectural Aluminum	Colloquial Alias	Colloquial or commercial industry synonym

Applicable Specifications & Product Form ReferencesSPECIFICATION REFERENCE

2 Applicable Standards

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Standards Body	Specification Code	Specification Title / Scope	Relationship Type
ASTM International	ASTM B221	Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and TubesPRODUCT_SPECIFICATION · Product form: Extrusions	Specification Reference
ASTM International	ASTM B210	Standard Specification for Aluminum and Aluminum-Alloy Drawn Seamless TubesPRODUCT_SPECIFICATION · Product form: Drawn Tube	Specification Reference

Engineering Notice: Applicable specifications establish manufacturing requirements, dimensional tolerances, and test criteria for specific product forms (e.g. bus bar, wire, plate, pipe). They represent applicable technical standards, not alternative or equivalent alloy grades.

6063 Aluminum Chemical Composition

Chemical Composition (Weight %) — Elemental limits and values from the cited source. Preserves exact semantic limits (minimums, maximums, and ranges).

Scroll horizontally for full elemental limits

Element	Symbol	Semantic Basis	Specified Value	Unit	Metallurgical Notes & Qualification	Data Status
Silicon	Si	RANGE	0.20 – 0.60	wt%	Ref: Kaiser Aluminum Corporation	VERIFIED
Iron	Fe	MAXIMUM	≤ 0.35	wt%	Ref: Kaiser Aluminum Corporation	VERIFIED
Copper	Cu	MAXIMUM	≤ 0.10	wt%	Ref: Kaiser Aluminum Corporation	VERIFIED
Manganese	Mn	MAXIMUM	≤ 0.10	wt%	Ref: Kaiser Aluminum Corporation	VERIFIED
Magnesium	Mg	RANGE	0.45 – 0.90	wt%	Ref: Kaiser Aluminum Corporation	VERIFIED
Chromium	Cr	MAXIMUM	≤ 0.10	wt%	Ref: Kaiser Aluminum Corporation	VERIFIED
Zinc	Zn	MAXIMUM	≤ 0.10	wt%	Ref: Kaiser Aluminum Corporation	VERIFIED
Titanium	Ti	MAXIMUM	≤ 0.10	wt%	Ref: Kaiser Aluminum Corporation	VERIFIED
Other Elements Each	OE	EACH	≤ 0.05 each	wt%	Ref: Kaiser Aluminum Corporation	VERIFIED
Other Elements Total	OT	TOTAL	≤ 0.15	wt%	Ref: Kaiser Aluminum Corporation	VERIFIED
Aluminum	Al	REMAINDER	Remainder	wt%	Balance aluminumRef: Kaiser Aluminum Corporation	VERIFIED

* Elemental percentages are expressed in weight percent (wt%). Values represent applicable specification limits. Unspecified trace elements are not fabricated or assumed.Preserves exact semantic basis

Property Display UnitsSwitch between Canonical SI and Source / US Customary units:

6063 Aluminum Physical Properties

Source-specific physical properties. Test temperatures are shown only where reported.

1 Parameters

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Property Parameter	Canonical SI Value	Semantic Basis	Test Temperature / Context Range	Source Raw Reference	Source Reference	Status
Density	2.69 g/cm³	TYPICAL		2.69 g/cm³	Kaiser Aluminum Corporation	VERIFIED

6063 Aluminum Thermal & Thermodynamic Properties

Phase change temperatures, thermal conductivity, specific heat, mean coefficients of thermal expansion across standardized temperature ranges, and recommended thermal processing windows.

6 Parameters

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Property Parameter	Canonical SI Value	Semantic Basis	Source Raw Reference	Source Reference	Status
Coefficient of Thermal Expansion	23.4 µm/(m·K)	TYPICAL	23.4 µm/(m·K)	Kaiser Aluminum Corporation	VERIFIED
Solidus Temperature	616 °C	TYPICAL	616 °C	Kaiser Aluminum Corporation	VERIFIED
Liquidus Temperature	654 °C	TYPICAL	654 °C	Kaiser Aluminum Corporation	VERIFIED
Thermal ConductivityCondition: O Temper	218 W/(m·K)	TYPICAL	218 W/(m·K)	Kaiser Aluminum Corporation	VERIFIED
Thermal ConductivityCondition: T5 Temper	209 W/(m·K)	TYPICAL	209 W/(m·K)	Kaiser Aluminum Corporation	VERIFIED
Thermal ConductivityCondition: T6 Temper	201 W/(m·K)	TYPICAL	201 W/(m·K)	Kaiser Aluminum Corporation	VERIFIED

6063 Aluminum Electrical Properties

Electrical conductivity and resistivity in their reported units and conditions.

3 Parameters

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Property Parameter	Canonical SI Value	Semantic Basis	Source Raw Reference	Source Reference	Status
Electrical ConductivityCondition: O Temper	58 % IACS	TYPICAL	58.0 % IACS	Kaiser Aluminum Corporation	VERIFIED
Electrical ConductivityCondition: T5 Temper	55 % IACS	TYPICAL	55.0 % IACS	Kaiser Aluminum Corporation	VERIFIED
Electrical ConductivityCondition: T6 Temper	53 % IACS	TYPICAL	53.0 % IACS	Kaiser Aluminum Corporation	VERIFIED

6063 Aluminum Mechanical Properties

Contextual Mechanical Properties & Tempers: Engineering strength, ductility, and hardness values grouped by product form, temper, and section thickness. Mechanical properties are contextual and not isotropic averages.

Elastic & Baseline Mechanical ConstantsSource-specific measurement conditions

Modulus of Elasticity

69 GPa

Product Form:

Temper / Condition:

Showing 4 of 4 conditions

Scroll horizontally for all conditions & tempers

Product Form	Temper / Condition	Section Size	Tensile (UTS)	Yield Strength	Elongation	Shear Strength	Fatigue Strength	Hardness (Scales Preserved)	Status
Drawn Tube	O Temper Source values and qualifiers Ultimate Tensile Strength: 90 MPa (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Mechanical Properties O Drawn Tube Yield Strength (0.2% Offset): 48 MPa (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Mechanical Properties O Drawn Tube Elongation (4D): 35 % (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Mechanical Properties O Drawn Tube Shear Strength: 69 MPa (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Mechanical Properties O Drawn Tube Fatigue Endurance Limit (5x10^8 cycles): 55 MPa (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Mechanical Properties O Drawn Tube HB Hardness: 25 HB (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Hardness O Drawn Tube O	—	90 MPa	48 MPa	35 %	69 MPa	55 MPa	25 HB	VERIFIED
Extrusions	T5 Temper Source values and qualifiers Ultimate Tensile Strength: 186 MPa (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Mechanical Properties T5 Extrusions Yield Strength (0.2% Offset): 145 MPa (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Mechanical Properties T5 Extrusions Elongation (4D): 12 % (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Mechanical Properties T5 Extrusions Shear Strength: 117 MPa (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Mechanical Properties T5 Extrusions Fatigue Endurance Limit (5x10^8 cycles): 69 MPa (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Mechanical Properties T5 Extrusions HB Hardness: 60 HB (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Hardness T5 Extrusions T5	—	186 MPa	145 MPa	12 %	117 MPa	69 MPa	60 HB	VERIFIED
Extrusions	T6 Temper Source values and qualifiers Ultimate Tensile Strength: 241 MPa (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Mechanical Properties T6 Extrusions Yield Strength (0.2% Offset): 214 MPa (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Mechanical Properties T6 Extrusions Elongation (4D): 12 % (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Mechanical Properties T6 Extrusions Shear Strength: 152 MPa (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Mechanical Properties T6 Extrusions Fatigue Endurance Limit (5x10^8 cycles): 69 MPa (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Mechanical Properties T6 Extrusions HB Hardness: 73 HB (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Hardness T6 Extrusions T6	—	241 MPa	214 MPa	12 %	152 MPa	69 MPa	73 HB	VERIFIED
Drawn Tube	T832 Temper Source values and qualifiers Ultimate Tensile Strength: 276 MPa (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Mechanical Properties T832 Drawn Tube Yield Strength (0.2% Offset): 241 MPa (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Mechanical Properties T832 Drawn Tube Elongation (4D): 12 % (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Mechanical Properties T832 Drawn Tube Shear Strength: 165 MPa (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Mechanical Properties T832 Drawn Tube Fatigue Endurance Limit (5x10^8 cycles): 76 MPa (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Mechanical Properties T832 Drawn Tube HB Hardness: 82 HB (TYPICAL)Kaiser Aluminum Corporation — mat-phase4c-6063 Hardness T832 Drawn Tube T832	—	276 MPa	241 MPa	12 %	165 MPa	76 MPa	82 HB	VERIFIED

Hardness Integrity Notice: Rockwell B (HRB), Rockwell F (HRF), and Superficial 30T (HR30T) scales are reported on their measured scales without cross-scale mathematical conversion.

Source: See fact-level citations

Practical Engineering & Fabrication Notes

By Mat Grades Editorial Desk · Updated 2026-11-14. Use alongside the specified product standard and supplier certificate.

Machining & shop-floor behavior

For 6063 Aluminum, a qualified cutting-speed or tool-life recommendation is not supplied in the available record. A relevant hardness example is HB Hardness: 25 HB (typical; O Temper, O, Drawn Tube). Use that supplied condition for a trial of the difficult feature. Record tool changes, burr removal, unclamped dimensions and accepted parts per hour. Relative machinability ratings from different reference scales should not be compared as if they were one common test.

Weldability, brazing & joining

No qualified weld procedure, filler selection or preheat/interpass schedule is established by this material record. Obtain a procedure for the actual joint, supplied condition and section rather than copying one from a nearby grade. The first cataloged strength example is Ultimate Tensile Strength: 90 MPa (typical; O Temper, O, Drawn Tube). Assess the final part after joining or thermal processing. Include distortion, cleanup and inspection in the quotation. A material designation or favorable process rating is a starting point for qualification, not evidence that an untested joint meets the drawing.

Corrosion & service environment

Review the finish, moisture traps and contact with other metals before accepting an assembly for service. Alloy, temper and surface treatment answer different questions. A stronger listed condition does not automatically solve corrosion, wear or deflection, and thermal-property data is not a maximum operating-temperature rating. The recorded thermal example is Coefficient of Thermal Expansion: 23.4 µm/(m·K) (typical; additional condition not stated). State the exposure and inspection access in the design record so that a change of installation or cleaning method triggers a review. The selected composition entries are Si 0.2–0.6 wt%, Fe maximum 0.35 wt%, Cu maximum 0.1 wt%. Chemistry documents identity; it does not establish fluid compatibility.

Selection trade-offs & applications

Use AA 6063, UNS A96063, ISO AlMg0.7Si to identify the candidate, then specify the product form and delivered condition separately. A specific component application is not asserted where the source record does not provide one. The listed forms include Drawn Tube, Extrusions; confirm the actual stock offered by the supplier. Compare the complete route through machining, joining, finish and inspection. Keep the certificate, required test location and acceptance criteria with the first-article record. A later change of grade, condition or source should be assessed against that same requirement.

Technical references: Kaiser Aluminum Corporation

6xxx Series Wrought Aluminum Alloys

Wrought aluminum alloys grouped under the 6xxx metallurgical series sharing fundamental alloying systems and physical characteristics.

9 Adjacent Grades

6005A

6026

6060

6061

6063Current Grade

6063 Aluminum

6082

6101

6106

6262

Related Engineering & Metallurgy Guides

Contextual technical guides explaining degradation mechanisms, testing methodologies, and selection criteria relevant to 6063 Aluminum.

Welding & Fabrication18 min read

How to Weld Aluminium to Aluminium: TIG, MIG, Filler Metals & Alloy Guide

Aluminium possesses distinct physical and metallurgical properties—including a tenacious refractory oxide layer that melts at 2,072°C, thermal conductivity five times higher than structural steel, extreme liquid hydrogen solubility, and a lack of visible color change before melting. Successful aluminium-to-aluminium welding requires matching the base alloy series to an appropriate process (AC TIG, pulsed MIG, or SMAW) and compatible filler metal while designing for unavoidable heat-affected zone softening.

Author: Mat Grades Editorial DeskRead Guide →

Sources

Sources & Provenance Trail: Authoritative reference publications, standards specifications, and data registers cited across this material record.

Kaiser Aluminum CorporationKaiser Aluminum Technical Engineering Datasheet

PRIMARY PRODUCER

Reviewed factual transcription from Kaiser Aluminum technical product datasheets: mat-phase4c-6063 Chemical Composition Limits. Selected facts only; no decorative text or full standard tables reproduced.