Aluminum 6063-T6 T5; AA 6063 Aluminum Alloy Properties

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Aluminum 6063-T6, T5 (AA6063 Alloy)

AA 6063 aluminum is one of the Al-Mg-Si series aluminum alloys, containing about 1% Mg2Si. It has excellent extrudability, moderate strength, good weldability, corrosion resistance and resistance to stress corrosion cracking (SCC), widely used in extruded architectural profiles and decorative finishes. The common temper conditions of AA6063 mainly include: aluminum 6063-T5, 6063-T6, etc.

Alloy 6060, an extruded aluminum popular in Europe, has the same purpose and very similar mechanical properties as AA6063 (slightly weaker than aluminum grade 6063, and even more extrudable).

Compared to Al-6061 and 6082 (popular alloy in Europe), Al-6063 is used in construction applications as a lower strength and slightly lower cost alloy. This alloy is ideal for surface treatments such as anodizing. Extrusions of alloy 6063 are generally considered to provide a better anodized appearance than 6061, but they are not as strong.

AA 6063 Aluminum Properties

The following tables summarize AA 6063 aluminum properties including chemical composition, physical and mechanical properties, etc.

Chemical Composition

The chemical composition of 6063 aluminum alloy is given in the data sheet below.

6063 Chemical Composition, %
Aluminum (UNS) Si Fe, ≤ Cu, ≤ Mn, ≤ Mg Cr, ≤ Zn, ≤ Ti, ≤ Other Elements, Each (Total), ≤ Al
6063 (A96063) 0.20-0.60 0.35 0.10 0.10 0.45-0.90 0.10 0.10 0.10 0.05 (0.15) Remainder

6063 Aluminum Alloy Physical Properties

Aluminum 6063-T5 T6 physical properties are listed in the data sheet below, including the aluminum density, melting point, coefficient of thermal expansion, Young’s modulus, thermal conductivity, specific heat, electrical conductivity, and electrical resistivity, etc.

Note:

  • 10-6·K-1 = 10-6/K = 1 μm/m·°C
  • 1 Ω·mm²/m = 1 μΩ·m
  • 1 g/cm3 = 1 kg/dm3 = 1000 kg/m3
  • 1 GPa = 1 kN/mm2
  • 1 MPa = 1 N/mm2
  • MS/m = 0,58% IACS
  • 1 cal/(g.C) = 1 Btu/(lb⋅F)
6063 Aluminum Physical Properties
Aluminum Alloy and Temper Density, g/cm3 (lb/in.3) Melting point, °C (°F) Specific heat capacity, J/kg·K (Btu/lb ·°F) Coefficient of thermal expansion, 10-6/K (μin./in. ·°F) Thermal conductivity at 25 °C (77 °F),
W/m·°C (BTU∙in/h∙ft²∙°F)
Electrical conductivity at 20 °C (68 °F), MS/m
Equal volume (Equal weight)
Electrical conductivity at 20 °C (68 °F), % IACS
Equal volume (Equal weight)
Electrical resistivity at 20 °C (68 °F).
Ω·mm2/m (Ω· circ mil/ft)
6063-O 2.70 (0.098) 615-655 (1140-1210) 896 (0.214) at 20 °C (68 °F) 23.4 (13.0) at 20-100 ℃ (68-212 °F) 218 (1510) 34 (58) 58 (191) 0.029 (18)
6063-T1 193 (1340) 29 (50) 50 (165) 0.034 (21)
6063-T5 209 (1450) 32 (55) 55 (181) 0.031 (19)
6063-T6, T83 201 (1390) 31 (53) 53 (175) 0.032 (20)

6063 Aluminum Mechanical Properties

Aluminum 6063 mechanical properties are listed in the table below, including tensile strength, yield strength, elongation, hardness, etc.

ASTM B210/B210M

ASTM B210/B210M: Standard Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes

Aluminium 6063-T6 Mechanical Properties – Drawn Seamless Tubes Elongation ≥, %
Aluminum Alloy and Temper Diameter or Thickness (t), mm (in.) Tensile Strength, Mpa (ksi), ≥ Yield Strength (0.2 % offset), Mpa (ksi), ≥ Full-Section Specimen in 2 in. (50mm) Cut-Out Specimen in 2 in. (50mm) Cut-Out Specimen, 5×diameter (5.65√A) (b)
6063-O 0.45<t≤12.50 (0.018<t≤0.5) ≤130 (19)
6063-T4, T42 (a) 0.63<t≤1.20 (0.025<t≤0.05) 150 (22) 70 (10) 16 14
1.20<t≤6.30 (0.05<t≤0.26) 150 (22) 70 (10) 18 16
6.30<t≤12.50 (0.260<t≤0.5) 150 (22) 70 (10) 20 18 16
6063-T6, T62 (a) 0.63<t≤1.20 230 (33) 195 (28) 12 8
1.20<t≤6.30 230 (33) 195 (28) 14 10
6.30<t≤12.50 230 (33) 195 (28) 16 12 10
6063-T83 0.63<t≤6.30 230 (33) 205 (30) 5
6063-T831 0.63<t≤6.30 195 (28) 170 (25) 5
6063-T832 0.63<t≤1.20 285 (41) 250 (36) 8 5
1.20<t≤6.30 275 (40) 240 (35) 8 5

Note:

  • (a) Material in the T42 or T62 tempers is not available from the material producers.
  • (b) The elongation in 50 mm (2 in.) is suitable for full-section test tubes, plate specimens, tubes with flat walls, and similar bending specimens with curved walls up to a maximum wall thickness of 12.50 mm. Elongation in 5D (5.65√A), D and So are the diameter and cross-sectional area of the specimen, respectively, and are suitable for circular specimens with a wall thickness exceeding 6.30 mm.

ASTM B221

Standard Specification for Aluminum and Aluminium-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes

Aluminium 6063-T5 T6 Mechanical Properties – Extruded Bars, Rods, Wire, Profiles, and Tubes
Aluminum Alloy and Temper Specified Diameter or Thickness (t), mm (in.) Area, mm2 (in2) Tensile Strength, Mpa (ksi), ≥ Yield Strength (0.2 % offset), ksi, ≥ Elongation in 50mm (2 in.), ≥ 50 × Diameter (5.56 √A), ≥
6063-O all all ≤130 (19) 18 16
6063-T1 ≤ 12.5 (0.5) all 115 (17) 60 (9) 12 10
12.5<t≤25 (0.5<t≤1) all 110 (16) 55 (8) 10
6063-T4, T42 (a) ≤ 12.50 (0.50) all 130 (19) 70 (10) 14 12
12.5<t≤25 (0.5<t≤1) all 125 (18) 60 (9) 12
6063-T5 ≤ 12.5 (0.5) all 150 (22) 110 (16) 8 7
12.5<t≤25 (0.5<t≤1) all 145 (21) 105 (15) 7
6063-T52 ≤ 25 (1) all ≥150, ≤205 (≥22 ,≤30) ≥110, ≤170 (≥16 ,≤25) 8 7
T54 (b) ≤ 3.2 (0.124) all 225 (32.5) 205 (30) 8
3.2<t≤12.50 (0.124<t≤0.499) all 225 (32.5) 205 (30) 10
T6, T62 (a) ≤ 3.2 (0.124) all 205 (30) 170 (25) 8
3.2<t≤25 (0.124<t≤1) all 205 (30) 170 (25) 10 9
T65 (b) ≤ 5 (0.182) all 250 (36) 230 (33) 7

ASTM B241/B241M

ASTM B241/B241M: Aluminium and Aluminum-Alloy Seamless Pipe and Seamless Extruded Tube

Aluminium 6063-T6 Mechanical Properties – Seamless Pipe Elongation, ≥, %
Standard Aluminum Alloy and Temper Pipe Size, mm (in.) Tensile Strength, Mpa (ksi), ≥ Yield Strength (0.2 % offset), Mpa (ksi), ≥ in 50 mm in 5 × Diameter
ASTM B241/B241M 6063-T6 all 205 (30) 170 (25) 8 7
Seamless Extruded Tube Elongation ≥, %
Standard Aluminum Alloy and Temper Specified Section or
Wall Thickness, mm. (in.)
Area, mm2 (in2) Tensile Strength, Mpa (ksi), ≥ Yield Strength (0.2 % offset), Mpa (ksi), ≥ in 50 mm (2 in.) in 5 × Diameter
ASTM B241/B241M 6063-O all all ≤130 (19) 18 16
T1 ≤12.5 (0.5) all 115 (17) 60 (9) 12 10
>12.5-25.0 (0.5-1.0) all 110 (16) 55 (8) 10
T4,T42 ≤12.5 (0.5) all 130 (19) 70 (10) 14 12
>12.5-25.0 (0.5-1.0) all 125 (18) 60 (9) 12
T5 ≤12.5 (0.5) all 150 (22) 110 (16) 8 7
>12.5-25.0 (0.5-1.0) all 145 (21) 105 (15) 7
T52 ≤25 (1.0) all 150-205 (22-30) 110-170 (16-25) 8 7
T6 ≤3.2 (0.125) all 205 (30) 170 (25) 8
>3.2-25.0 (0.125-1.0) all 205 (30) 170 (25) 10 9

ASTM B429/B429M

ASTM B429/B429M: Aluminium-Alloy Extruded Structural Pipe and Tube

Aluminium 6063-T5 T6 Mechanical Properties – Extruded Structural Pipe and Tube Elongation ≥, %
Aluminum Alloy and Temper Diameter or Thickness (t), mm (in.) Tensile Strength, Mpa (ksi), ≥ Yield Strength (0.2 % offset), Mpa (ksi), ≥ Full-Section Specimen in 2 in. (50mm) Cut-Out Specimen in 2 in. (50mm) Cut-Out Specimen, 5×diameter (5.65√A)
6063-O all ≤130 (19) 18 18
6063-T1 ≤12.5 (0.5) 115 (17) 60 (9) 12 12
12.5<t≤25 (0.5<t≤1) 110 (16) 55 (8) 12 12
6063-T4, T42 ≤12.5 (0.5) 130 (19) 70 (10) 14 14 12
12.5<t≤25 (0.5<t≤1) 125 (18) 60 (9) 14 12
6063-T5 ≤12.5 (0.5) 150 (22) 110 (16) 8 8
12.5<t≤25 (0.5<t≤1) 145 (21) 105 (15) 8 8
6063-T52 ≤25 (1) >150 (22), ≤205 (30) >110 (16), ≤170 (25) 8 8
6063-T6, T62 ≤12.5 (0.5) 205 (30) 170 (25) 8 8
≤12.5 (0.5) 205 (30) 170 (25) 10 10

Applications of 6063 Aluminum Alloy

Typical uses of AA 6063 aluminum alloy include: furniture, doors, window frames, architectural profiles, decorative finishes, plumbing, railings, truck and trailer floors, electrical and electronic parts, highway signs, hospital and medical equipment, kitchen equipment, radiators; Extrusions in trains, cars and airplanes.

6063 Aluminum Alloy Equivalent Material

AA 6063 aluminum alloy equivalent material is listed in the table below including US ASTM, SAE; European EN, ISO, Australian AS/NZS, Japanese JIS and Chinese GB standard.

6063 Aluminum Equivalent Material
US European Union ISO Japan China Australian/New Zealand
ASTM Standard Aluminum (UNS) SAE Standard Grade Standard Numerical (Chemical symbols) Standard Grade Standard Aluminum Standard Grade Standard Aluminium
ASTM B221;
ASTM B210;
ASTM B241/B241M;
ASTM B429/B429M
6063 (UNS A96063) SAE AMS 4156;
AMS-QQ-A-200/9
6063 EN 573-3 EN AW-6063 (EN AW-AlMg1SiCu) ISO 209 AW-6063 JIS H4000;
JIS H4040
6063 GB/T 3077;
GB/T 3880.2
6063 AS 2848.1;
AS/NZS 1865;
AS/NZS 1866
6063

Note:

  • ASTM B210: Aluminum and Aluminum-Alloy Drawn Seamless Tubes
  • ASTM B221: Extruded Bars, Rods, Wire, Profiles and Tubes
  • ASTM B241/B241M: Seamless Pipe and Seamless Extruded Tube
  • ASTM B429/B429M: Aluminum-Alloy Extruded Structural Pipe and Tube
  • SAE AMS 4156: Aluminum Alloy, Extrusions 0.68Mg-0.40Si (6063-T6 Aluminium) Solution and Precipitation Heat Treated
  • AMS-QQ-A-200/9: 6063 Aluminum Alloy, Bar, Rod, Shapes, Tube, and Wire, Extruded

Related Material: Aluminum 7075, 5052 Aluminum, 2024 Aluminium

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