Architectural extrusion guide

6063 Aluminium Angle: Sizes, Weights, Tempers and Finishes

6063 aluminium angle is an extruded L-section in the architectural alloy 6063, usually supplied in T5 or T52 temper for trims, frames and edge protection, or T6 where more strength is needed. It gives a smoother, brighter finish than 6061 angle and takes anodising and powder coating evenly. This guide gives metric and imperial size and weight tables, guaranteed properties, standards, tolerances, finishing and fabrication advice, and a clear rule for choosing between 6063 and 6061.

By Metline Technical Team · Updated 17 October 2026

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Extruded 6063 aluminium angle and other architectural sections

Alloy: 6063 (EN AW-6063, A96063)
Tempers: T5, T52, T6
Leg sizes: About 10 – 150 mm (3/8 – 6 in)
Standards: ASTM B221 · EN 755-2 · QQ-A-200/9

Overview

What is 6063 aluminium angle?

An angle is two flat legs joined at a right angle. Extruded in 6063, it becomes the workhorse section of architectural and light-fabrication work: the edge trim on a cabinet, the bead that holds a glass pane, the corner guard on a wall, the frame of a display stand, the bracket under a solar panel rail.

6063 is chosen for angle when the part will be seen or when it needs a consistent anodised or coated finish. The alloy's low content of copper, iron and chromium leaves a clean extruded surface with few die lines, so even thin, light sections come off the press straight, sharp-cornered and ready for finishing. It is also one of the lowest-cost extrusion alloys, which matters on projects that use kilometres of trim.

What 6063 angle is not is a heavy structural member. Its guaranteed yield strength in T6 is about 170 MPa, against 240 MPa for 6061-T6. For angle that carries significant load, is bolted under high clamp force, or is machined heavily, 6061 is the better choice, as explained in the comparison section below.

Profile types

Types of 6063 angle

Equal-leg angle

Both legs the same length, for example 25 × 25 × 2 mm or 1 × 1 × 1/8 in. The most common form, used for frames, edge protection, brackets and general fabrication.

Unequal-leg angle

One leg longer than the other, such as 50 × 25 × 3 mm or 2 × 1 × 1/8 in. Use it where one face provides the fixing and the other acts as a stiffener or a visible return.

Sharp-corner (architectural) angle

Square inside and outside corners for a crisp line on visible trim. Most 6063 stock angle is of this type; it is slightly lighter than radiused angle of the same size.

Radiused or rounded-corner angle

Radiused root and toes remove sharp edges for safety on furniture and handrails, reduce stress concentration and give a softer appearance.

Tapered and lipped angle

Custom profiles with thinner toes, a lip, a bulb or serrations on one leg for gripping gaskets or tiles. These are made on dedicated dies and suit repeat volumes.

Pre-finished angle

Supplied anodised, powder coated or with protective film so it can be installed straight from the pack. Common for interior trim, tile edging and shopfitting.

Chemical composition

Chemical composition of 6063 angle

6063 angle follows the registered composition limits below (Aluminum Association, ASTM B221, EN 573-3). The mill certificate reports the actual cast analysis for every lot.

Element	Min %	Max %
Silicon (Si)	0.20	0.60
Iron (Fe)	—	0.35
Copper (Cu)	—	0.10
Manganese (Mn)	—	0.10
Magnesium (Mg)	0.45	0.90
Chromium (Cr)	—	0.10
Zinc (Zn)	—	0.10
Titanium (Ti)	—	0.10
Others, each / total	—	0.05 / 0.15
Aluminium (Al)	Remainder

Magnesium and silicon combine as Mg₂Si, the phase that gives strength on ageing. Their levels sit lower than in 6061, which is why 6063 extrudes faster and more easily into thin legs. Copper and iron are capped low to keep the anodised finish bright and colour-consistent along the length of each bar.

Tempers

Which temper of 6063 angle should you order?

Temper	What it means	Best for
6063-T5	Cooled from the extrusion temperature and artificially aged	Standard trims, frames, shopfitting, edge protection; the most widely stocked temper
6063-T52	Cooled from extrusion and aged to a controlled range with both minimum and maximum strength	Angle that is bent, notched, crimped or roll-formed; architectural bead and trim
6063-T6	Solution heat-treated (or press-quenched) and artificially aged to higher strength	Railings, brackets, ladders, light structures and anything that sees impact
6063-T66	High-strength variant under EN 755-2 with tighter process control	Load-bearing façade angle under European specifications
6063-T4 / O	Naturally aged or annealed	Severe forming before ageing; supplied to order only

In North America, stock angle in 6063 is mainly T52 or T5; in Europe, Asia and the Middle East it is mostly T5 or T6. If your drawing says only "6063 angle", ask your supplier which temper is being offered: the minimum yield strength of T6 is about 55 % higher than that of T5 under ASTM B221.

Mechanical properties

Mechanical and physical properties of 6063 angle

Typical values are useful for comparison; design should use the specified minimums. For angle, the leg thickness determines which size band of the standard applies.

Temper	Tensile strength	Yield strength (0.2 %)	Elongation	Brinell hardness
O	90 MPa / 13 ksi	48 MPa / 7 ksi	18 – 25 %	25 HB
T1	152 MPa / 22 ksi	90 MPa / 13 ksi	20 %	42 HB
T4	172 MPa / 25 ksi	90 MPa / 13 ksi	22 %	—
T5	186 MPa / 27 ksi	145 MPa / 21 ksi	12 %	60 HB
T6	241 MPa / 35 ksi	214 MPa / 31 ksi	12 %	73 HB

Typical values (Aluminum Association / ASM); not guaranteed. Typical values for T52 lie between those of T5 and T6.

Temper and size band	ASTM B221 tensile, min	ASTM B221 yield, min	ASTM elongation, min	EN 755-2 Rm / Rp0.2, min
T1, up to 12.7 mm (0.500 in)	117 MPa / 17 ksi	62 MPa / 9 ksi	12 %	—
T5, up to 12.7 mm (0.500 in)	152 MPa / 22 ksi	110 MPa / 16 ksi	8 %	—
T5, wall up to 10 mm	—	—	—	175 MPa / 130 MPa, A 8 %
T52, up to 25 mm (1.000 in)	152 – 205 MPa / 22 – 30 ksi	110 – 170 MPa / 16 – 25 ksi	8 %	—
T6, up to 25 mm (1.000 in)	207 MPa / 30 ksi	172 MPa / 25 ksi	8 – 10 %	—
T6, wall up to 10 mm	—	—	—	215 MPa / 170 MPa, A 8 %
T66, wall up to 10 mm	—	—	—	245 MPa / 200 MPa, A 8 %

ASTM values summarised from ASTM B221; EN values from EN 755-2:2016 for walls up to 10 mm. Check the certificate for the governing edition and size band.

Physical properties

Density: 2.70 g/cm³ (0.0975 lb/in³)
Modulus of elasticity: 68.9 GPa (10,000 ksi)
Melting range: About 615 – 655 °C
Thermal conductivity: About 209 W/m·K (T5), 200 W/m·K (T6)
Electrical conductivity: About 55 % IACS (T5), 53 % IACS (T6)
Thermal expansion: 23.4 µm/m·°C (20 – 100 °C)

Size and weight tables

Metric 6063 angle sizes and weight per metre

The weights below are calculated for sharp-corner angle using area = t × (A + B − t) and a density of 2.70 g/cm³. Angle with radiused corners differs by a few per cent. Standard mill lengths are 5.8 – 6 m; other lengths can be cut.

A × B × t (mm)	Area (mm²)	Mass (kg/m)
10 × 10 × 1	19	0.051
10 × 10 × 2	36	0.097
12 × 12 × 1	23	0.062
12 × 12 × 2	44	0.119
15 × 15 × 1.5	43	0.115
15 × 15 × 2	56	0.151
20 × 20 × 1.5	58	0.156
20 × 20 × 2	76	0.205
20 × 20 × 3	111	0.300
25 × 25 × 1.5	73	0.196
25 × 25 × 2	96	0.259
25 × 25 × 3	141	0.381
25 × 25 × 4	184	0.497
30 × 30 × 2	116	0.313
30 × 30 × 3	171	0.462
30 × 30 × 4	224	0.605
35 × 35 × 3	201	0.543
40 × 40 × 2	156	0.421
40 × 40 × 3	231	0.624
40 × 40 × 4	304	0.821
40 × 40 × 5	375	1.012
40 × 20 × 2	116	0.313
40 × 20 × 3	171	0.462
50 × 50 × 3	291	0.786
50 × 50 × 4	384	1.037
50 × 50 × 5	475	1.282
50 × 50 × 6	564	1.523
50 × 25 × 3	216	0.583
50 × 30 × 3	231	0.624
60 × 60 × 4	464	1.253
60 × 60 × 5	575	1.552
60 × 40 × 4	384	1.037
70 × 70 × 5	675	1.823
75 × 50 × 5	600	1.620
80 × 80 × 5	775	2.093
80 × 80 × 6	924	2.495
80 × 40 × 4	464	1.253
100 × 50 × 5	725	1.958
100 × 100 × 6	1164	3.143
100 × 100 × 8	1536	4.147
100 × 100 × 10	1900	5.130
120 × 120 × 8	1856	5.011
120 × 120 × 10	2300	6.210
150 × 150 × 10	2900	7.830

Sizes in this list are common catalogue sections, not a guarantee of availability. If a listed size is not available in the finish or temper you need, a nearby section can usually be offered, and non-standard angles can be extruded on a new die where the quantity justifies it.

Size and weight tables

Imperial 6063 aluminum angle sizes (inches) and weight per foot

Imperial angle is standard in North America and is often specified on export projects designed to US practice. Common mill lengths are 12, 20 and 24 ft (about 3.66, 6.10 and 7.32 m).

A × B × t (in)	Area (in²)	Weight (lb/ft)	Weight (kg/m)
0.5 × 0.5 × 0.0625	0.059	0.069	0.102
0.5 × 0.5 × 0.125	0.109	0.128	0.191
0.75 × 0.75 × 0.0625	0.090	0.105	0.157
0.75 × 0.75 × 0.125	0.172	0.201	0.299
1 × 1 × 0.0625	0.121	0.142	0.211
1 × 1 × 0.125	0.234	0.274	0.408
1 × 0.5 × 0.125	0.172	0.201	0.299
1 × 0.75 × 0.125	0.203	0.238	0.354
1.25 × 1.25 × 0.125	0.297	0.347	0.517
1.25 × 1.25 × 0.1875	0.434	0.507	0.755
1.5 × 1.5 × 0.125	0.359	0.420	0.626
1.5 × 1.5 × 0.1875	0.527	0.617	0.919
1.5 × 1.5 × 0.25	0.688	0.804	1.198
1.5 × 1 × 0.125	0.297	0.347	0.517
1.75 × 1.75 × 0.125	0.422	0.494	0.735
2 × 1 × 0.125	0.359	0.420	0.626
2 × 1.5 × 0.125	0.422	0.494	0.735
2 × 2 × 0.125	0.484	0.567	0.844
2 × 2 × 0.1875	0.715	0.836	1.245
2 × 2 × 0.25	0.938	1.097	1.633
2.5 × 1.5 × 0.125	0.484	0.567	0.844
3 × 2 × 0.125	0.609	0.713	1.061
3 × 2 × 0.25	1.188	1.389	2.069
3 × 3 × 0.125	0.734	0.859	1.279
3 × 3 × 0.1875	1.090	1.275	1.898
3 × 3 × 0.25	1.438	1.682	2.504
4 × 2 × 0.125	0.734	0.859	1.279
4 × 2 × 0.25	1.438	1.682	2.504

Standards & tolerances

Standards, designations and tolerances

System	Designation
Aluminum Association / ASTM	6063
UNS	A96063
European (EN)	EN AW-6063 / EN AW-AlMg0.7Si
German (former DIN)	AlMgSi0.5, Werkstoff 3.3206
ISO	AlMg0.7Si
Japan (JIS)	A6063
China (GB/T)	6063
United Kingdom (former BS)	HE9 (extrusions)
India (IS 733 / IS 1285)	63400

Standard	What it controls for 6063 angle
ASTM B221 / B221M	Chemistry, temper and minimum tensile properties of extruded angle
AMS-QQ-A-200/9	Aerospace and defence extrusions in 6063, often quoted for North American stock angle
ANSI H35.2	Dimensional tolerances for ASTM orders: leg length, thickness, straightness, twist, angularity and cut length
EN 755-2	Mechanical properties under European specifications, including T66
EN 755-9	Dimensional and form tolerances for profiles under EN orders
EN 12020-2	Tighter tolerances for precision 6060 and 6063 profiles, used for window and façade systems

Tolerances on extruded angle depend on the leg length, the leg thickness and, under EN rules, the circumscribing circle of the section. As a rule of thumb, thin legs are held to a few hundredths of a millimetre on thickness and leg length to a few tenths. Angularity (the 90° between legs) is controlled to roughly ±1° for standard angle and tighter for precision profiles. Straightness and twist are controlled by stretching the extrusion after the press.

For visible architectural work, also agree the surface quality class, the permitted die lines and the colour range for anodised or coated material. These are not covered by the dimensional tables, and most disputes about trims come from surface expectations that were never written down.

Surface finishes

Finishes for 6063 angle

Mill finish

As extruded, with a light natural oxide. Lowest cost; suitable for hidden framing and for parts that will be finished after fabrication.

Clear anodised

Silver-matt or bright finish with a 10 – 25 µm anodic film. Hard, wear resistant and colour stable; 15 – 25 µm is usual for exterior use.

Colour anodised

Champagne, bronze, black, gold and other tones by electrolytic colouring or dyeing. Electrolytic colours are preferred outdoors for UV stability.

Powder coated

Polyester powder in RAL colours, matt or gloss, about 60 – 80 µm. Matches angle to window frames, cladding and furniture.

Wood-grain and special effects

Sublimation wood-grain, textured and metallic powders for interior design and outdoor furniture.

Brushed and polished

Mechanical brushing or polishing before anodising gives a satin or mirror look for shopfitting and decorative trim.

Anodise or coat after cutting and drilling where possible, so cut edges are protected. If angle must be bent, do it before anodising: a tight bend will craze the anodic film. Ask for protective film on finished faces for transport and site handling.

Working with 6063 angle

Cutting, joining, bending and machining

Cutting

Use a carbide-tipped, fine-pitch saw blade with a negative or low positive hook angle and a lubricant mist. Support both legs close to the blade to prevent chatter, then deburr.

Drilling and punching

T5 and T6 drill cleanly with sharp HSS or carbide drills. Thin legs punch well; keep holes at least 1.5 – 2 diameters from edges to avoid tearing.

Mitring and corners

Mitre cuts with corner cleats or brackets give neat frames without welding. Adhesive bonding is common for display and furniture frames.

Welding

TIG and MIG with ER4043 or ER5356 filler. The heat-affected zone softens considerably, and welding damages anodised finishes, so mechanical joints are usually preferred for visible work.

Bending

Bend T52 or T4 for best results; T5 is acceptable with generous radii; T6 cracks easily. Bending with the leg in compression and using formed tooling reduces distortion.

Fasteners and galvanic corrosion

Use stainless steel or aluminium fasteners with insulating washers in damp environments. Keep angle out of direct contact with copper, bare carbon steel and wet timber treated with copper-based preservatives.

Applications

Where 6063 angle is used

Sector	Typical uses	Common size and finish
Building and construction	Window and door trims, glazing beads, cladding returns, corner protection, stair nosings	15 – 50 mm legs, anodised or powder coated
Interiors and shopfitting	Tile and panel edging, display frames, shelf edges, ceiling details	10 – 30 mm legs, brushed or anodised
Furniture	Table and cabinet frames, drawer runners, edge guards	20 – 40 mm legs, colour anodised or wood-grain
Industrial frames	Machine guards, light racks, enclosures, panel frames	25 – 60 mm legs, mill or clear anodised
Solar and outdoor	Module support brackets, cable supports, greenhouse framing	30 – 60 mm legs in T6, clear anodised
Transport	Trailer and caravan edging, bus interior trims, boat fittings above the waterline	20 – 50 mm legs, anodised
Electrical	Cable-tray supports, switchboard and panel frames, earthing bar supports	25 – 50 mm legs, mill finish

Where the angle will carry structural load, check deflection as well as stress: aluminium is about one third as stiff as steel, so a section that is strong enough can still bend more than expected over a long span.

Comparison

6063 angle vs 6061 angle

Property	6063 angle	6061 angle
Silicon / magnesium	0.20 – 0.60 % / 0.45 – 0.90 %	0.40 – 0.80 % / 0.80 – 1.20 %
Usual temper	T5, T52, T6	T6, T6511
Yield strength, min (T6, ASTM)	172 MPa / 25 ksi	241 MPa / 35 ksi
Surface and anodised finish	Smooth, bright, uniform	Good, slightly duller
Thin and complex sections	Excellent	Good
Machining	Fair, gummy in softer tempers	Very good
Corrosion resistance	Very good	Good
Cost	Lower	Higher
Typical use	Trims, frames, decorative and light structural work	Load-bearing frames, brackets, machined parts

A simple rule: if the angle is mostly there to look good, protect an edge or frame a light panel, use 6063. If a failure of the angle would cause something to fall, collapse or come loose under load, start with 6061 and check the calculation. Our 6061 angle guide covers structural angle in detail.

Buying advice

Checklist before ordering 6063 angle

Section: leg A, leg B and thickness, with the corner type (sharp or radiused); attach a drawing for anything non-standard
Temper: T5, T52 or T6, and the standard (ASTM B221, EN 755-2, AMS-QQ-A-200/9)
Length: mill length or exact cut length, with the length tolerance you need
Finish: mill, anodised (film class and colour), powder coated (RAL and gloss) or film-protected
Processing: punching, drilling, mitring or machining to drawing
Quantity and packing: pieces or kilograms, bundle size, interleaving and export packing
Documents: EN 10204 3.1 certificate, coating thickness report, and any third-party inspection

Ordering

How to order 6063 angle from Metline

Send your listSizes, temper, finish, lengths and quantities, or your full bill of materials.
QuoteWe confirm availability, suggest near alternatives where a size is not available, and quote on EXW, FOB, CIF or DAP terms.
ProcessCutting to length, punching or machining and finishing as specified.
Inspect and documentDimensional and visual checks, EN 10204 3.1 mill certificate and coating reports where applicable.
ShipBundled with interleaving, protective film where needed, and packed in wooden crates for export.

Sources

References and standards

ASTM B221 – Standard specification for extruded bars, rods, wire, profiles and tubes
EN 755-2 – Extruded rod/bar, tube and profiles: mechanical properties
EN 755-9 – Extruded profiles: tolerances on dimensions and form
ANSI H35.2 – Dimensional Tolerances for Aluminum Mill Products
The Aluminum Association – Aluminum Standards and Data

FAQ

6063 aluminium angle: frequently asked questions

How much does 6063 aluminium angle weigh?

Multiply thickness × (leg A + leg B − thickness) in mm by 0.0027 to get kg per metre. A 25 × 25 × 3 mm angle weighs about 0.38 kg/m and a 50 × 50 × 5 mm angle about 1.28 kg/m. A 1 × 1 × 1/8 in angle is about 0.27 lb/ft.

What is the difference between 6063-T5 and T52 angle?

Both are cooled at the press and artificially aged. T52 is aged to a controlled strength window with a maximum as well as a minimum, which gives more predictable bending and forming. T5 has only minimum values.

Is 6063 angle strong enough for structural use?

For light structures, yes, especially in T6 with a guaranteed yield of about 170 MPa. For heavily loaded frames, brackets that carry people or equipment, or bolted connections with high clamp loads, use 6061-T6 angle.

Can 6063 angle be anodised in black or bronze?

Yes. 6063 is the preferred alloy for colour anodising. Electrolytic bronze and black are the most durable outdoors; dyed colours are best kept indoors.

Can 6063 aluminum angle be bent?

Yes, with care. Order T52 or T4 for tight bends, use generous radii in T5, and avoid tight bends in T6. Bend before anodising or powder coating.

What lengths is 6063 angle supplied in?

Usually 5.8 – 6 m metric mill lengths or 12, 20 and 24 ft in imperial sizes. Cut lengths to your drawing are available on request.

Does Metline export 6063 angle?

Yes. Metline supplies 6063 angle from Mumbai to customers worldwide, with mill test certificates, protective packing and shipping by sea or air.

Need 6063 angle for a project?

Send your size list, temper, finish and quantities. We will reply with availability, certification and a delivered price.

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