Aluminum Alloy 6061 Properties, Data Sheet & Specs.
The following tables and lists summarize 6061 aluminum properties, datasheet and specs including chemical composition, physical properties and mechanical properties, welding, hardness, machinability, heat treating, etc.
Chemical Composition
Aluminium 6061 chemical composition is listed in the following table.
AA-6061 Chemical Composition, % ASTM, SAE AMS ANSI, Alloy (UNS) Si Fe, ≤ Cu Mn, ≤ Mg Cr Zn, ≤ Ti, ≤ Other Elements, Each (Total), ≤ Al ASTM B209;
ASTM B211;
ASTM B221;
ASTM B210;
ASTM B308/B308M;
ASTM B308/B308M;
ASTM B308/B308M;
ASTM B241/B241M;
SAE AMS 4025;
SAE AMS 4026;
SAE AMS 4027;
SAE AMS 41176061 (UNS A96061) 0.4-0.8 0.7 0.15-0.40 0.15 0.8-1.2 0.04-0.35 0.25 0.15 0.05 (0.15) Remainder Notes (various standards of 6061 aluminum):
- ASTM B209: Aluminum and Aluminum-Alloy Sheet and Plate.
- ASTM B211: Rolled or Cold Finished Bar, Rod, and Wire.
- ASTM B221: Extruded Bars, Rods, Wire, Profiles and Tubes.
- ASTM B210: Aluminum and Aluminum-Alloy Drawn Seamless Tubes.
- ASTM B308/B308M: AL 6061-T6 Aluminum Structural Profiles.
- ASTM B241/B241M: Seamless Pipe and Seamless Extruded Tube.
- SAE AMS 4025: Sheet and Plate; Temper O; Annealed.
- SAE AMS 4026: Sheet and Plate; Temper T4, T42, T451 (-T4 Sheet, -T451), Solution Heat Treated and Naturally Aged.
- SAE AMS 4027: Sheet and Plate; Temper T6 Aluminum, T62, T651 (AL 6061-T6 Sheet, 6061T651 Plate) Solution and Precipitation Heat Treated.
- SAE AMS 4117: Rolled or Cold Finished Bars, Rods, and Wire and Flash Welded Rings; (AL 6061-T6 Aluminum, 6061-T651).
6061 Aluminum Physical Properties
6061 aluminum physical properties are given in the following lists, including density, melting point, coefficient of thermal expansion, elastic modulus, thermal conductivity, specific heat capacity electrical conductivity, and electrical resistance.
Notes:
- 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
The melting range shown applies to wrought products with a thickness of 6.35 mm (1/4 in.) or greater.
Specific gravity: 2.7
Al-6061 Aluminum Physical Properties ASTM 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 diffusivity, mm2/s Thermal conductivity, W/m·°C (Btu∙in/h∙ft²∙°F) Electrical conductivity, Equal volume (Equal weight), % IACS Electrical resistivity, Ω·mm2/m (Ω· circ mil/ft) ASTM B209;
ASTM B210;
ASTM B221;
ASTM B241;
ASTM B308;
SAE AMS 4027;
SAE AMS 4117;
SAE AMS 4025;
SAE AMS 40266061-O 2.70 (0.098) 580-650 (1080-1205) 896 (0.214) at 20 °C (68 °F) 23.6 (13.1) at 20-100 °C (68-212 °F) 66 180 (1250) at 25 °C (77 °F) 47 (155) at 20 °C (68 °F) 0.0365 (22) at 20 °C (68 °F) 6061-T4 154 (1070) at 25 °C (77 °F) 40 (132) at 20 °C (68 °F) 0.043 (26) at 20 °C (68 °F) 6061-T6 167 (1160) at 25 °C (77 °F) 43 (142) at 20 °C (68 °F) 0.040 (24) at 20 °C (68 °F) Mechanical Properties
Aluminium 6061-T6 mechanical properties are listed in the following tables including yield strength (yield stress), ultimate tensile strength, shear strength, modulus of elasticity, young’s modulus, etc.
The following mechanical properties is the average value of various sizes, product forms and manufacturing methods, so the properties cannot be guaranteed. They are only used as a basis for comparing alloys and tempering, and should not be specified as engineering requirements or used for design purposes.
Aluminum 6061 Mechanical Properties, Part-1 Aluminum Alloy and Temper Ultimate Tensile strength, MPa (ksi) Yield strength, MPa (ksi) Elongation in 50 mm (2 in.), ≥% Brinell Hardness, HB (500 kgf load 10 mm ball) 1.6mm (1/16 in.) thick specimen 12.5mm (1/2 in.) thick specimen 6061-O 125 (18) 55 (8) 25 27 30 6061-T4, T451 240 (35) 145 (21) 22 22 65 6061-T6, T651 310 (45) 275 (40) 12 15 95 Alclad 6061-O 115 (17) 50 (7) 25 – – Alclad 6061-T4, T451 230 (33) 130 (19) 22 – – Alclad 6061-T6, T651 290 (42) 255 (37) 12 – –
Aluminum 6061 Mechanical Properties, Part-2 Aluminum Alloy and Temper Ultimate shear strength, MPa (ksi) Modulus of elasticity, GPa (106 psi) Fatigue endurance limit, MPa (ksi) 6061-O 85 (12) 69 (10) 60 (9) 6061-T4, T451 165 (24) 69 (10) 95 (14) Al 6061-T6, T651 205 (30) 69 (10) 95 (14) Alclad 6061-O 75 (11) 69 (10) – Alclad 6061-T4, T451 150 (22) 69 (10) – Alclad 6061-T6, 6061-T651 185 (27) 69 (10) – Notes for modulus of elasticity: The average of the tensile (Young’s modulus) and compressive modulus. The compression modulus is about 2% higher than the tensile modulus (Young’s modulus).
Aluminum 6061 Typical Mechanical Properties at Different Temperatures Alloy and temper Temperature, °C (°F) Ultimate tensile strength, MPa (ksi) 0.2% offset yield strength Elongation in 50 mm (2 in.), ≥%, 6061-T6,
6061-T651-195 (-320) 415 (60) 325 (47) 22 -80 (-112) 338 (49) 290 (42) 18 0 (-18) 325 (47) 283 (41) 17 24 (75) 310 (45) 275 (40) 17 100 (212) 290 (42) 262 (38) 18 150 (300) 235 (34) 215 (31) 20 205 (400) 130 (19) 103 (15) 28 250 (500) 52 (7.5) 35 (5) 60 315 (600) 32 (4.6) 19 (2.7) 85 370 (700) 21 (3) 12 (1.8) 95 Mechanical Properties of Aluminum 6061-T6 in SAE AMS and ASTM Standard
Aluminium 6061 Mechanical Properties – Extruded Bars, Rods, Wire, Profiles, and Tubes Standard Aluminum Alloy and Temper Specified Diameter or Thickness, in. Area, in2 Tensile Strength, ksi, ≥ (unless otherwise specified) Yield Strength (0.2 % offset), ksi, ≥ (unless otherwise specified) Elongation in 2 in. or 4xDiameter, ≥, % ASTM B221 6061-O all all 22, ≤ 16, ≤ 10 6061-T1 ≤ 0.625 all 26.0 14.0 16 6061-T4, T4510, T4511 all all 26.0 16 16 6061-T42 all all 26.0 12 16 6061-T51 ≤ 0.625 all 35.0 30 8 6061-T6, T62, T6510, T6511 ≤ 0.249 all 38 35 8 ≥0.250 all 38 35 10
Aluminium 6061 Mechanical Properties – Drawn Seamless Tubes Elongation in 2 in. or 4xDiameter, ≥, % Standard Aluminum Alloy and Temper Specified Diameter or Thickness, in. Tensile Strength, ksi, ≥ (unless otherwise specified) Yield Strength (0.2 % offset), ksi, ≥ (unless otherwise specified) Full-Section Specimen Cut-Out Specimen ASTM B210;
AMSWWT700/66061-O 0.018-0.500 22, ≤ 14, ≤ 15 15 6061-T6, T62 0.025-0.049 30.0 16.0 16 14 0.050-0.259 30.0 16.0 18 16 0.260-0.500 30.0 16.0 20 18 6061-T42 0.025-0.049 30.0 14.0 16 14 0.050-0.259 30.0 14.0 18 16 0.260-0.500 30.0 14.0 20 18 6061-T6, T62 0.025-0.049 42.0 35.0 10 8 0.050-0.259 42.0 35.0 12 10 0.260-0.500 42.0 35.0 14 12
Aluminium 6061 Mechanical Properties – Rolled or Cold Finished Bar, Rod, and Wire Standard Aluminum Alloy and Temper Specified Diameter or Thickness, in. Tensile Strength, ksi, ≥ (unless otherwise specified) Yield Strength (0.2 % offset), ksi, ≥ (unless otherwise specified) Elongation in 2 in. or 4xDiameter, ≥, % ASTM B211 6061-O ≤0.124 20, ≤ – – 0.125-8.000 18 6061-T4, T451 ≤ 0.124 30 – – 0.125-8.000 30 16 18 6061-T42 0.125-8.000 30 14 18 6061-T6, T62, T651 ≤ 0.124 42 – – 0.125-8.000 42 35 10 6061-T89, T94 ≤ 0.374 54 47 –
Aluminium 6061 Mechanical Properties – Plate and Sheet Standard Aluminum Alloy and Temper Specified Thickness, in. Tensile Strength, ksi, ≥ (unless otherwise specified) Yield Strength (0.2 % offset), ksi, ≥ (unless otherwise specified) Elongation in 2 in. or 4xDiameter, ≥, % Bend Diameter Factor, N ASTM B209 6061-O 0.006-0.007 ≤22 12.0 10 0 0.008-0.009 12 0 0.010-0.020 14 0 0.021-0.128 16 0.129-0.249 18 1 0.250-0.499 18 2 0.500-1.000 18 3 1.001-3.000 16 – 6061-T4 0.006-0.007 30.0 16.0 10 2 0.008-0.009 12 2 0.010-0.020 14 2 0.021-0.249 16 3 6061-T451 0.250-0.499 30.0 16.0 18 4 0.500-1.000 18 – 1.001-3.000 16 – 6061-T42 0.006-0.007 31.0 14.0 10 2 0.008-0.009 12 2 0.010-0.020 14 2 0.021-0.249 16 3 0.250-0.499 18 4 0.500-1.000 18 – 1.001-3.000 16 – 6061-T6, T62 0.006-0.007 42.0 35.0 4 2 0.008-0.009 6.0 2 0.010-0.020 8.0 2 0.021-0.036 10.0 3 0.037-0.064 10.0 4 0.065-0.128 10.0 5 0.129-0.249 10.0 6 6061-T62, T651 0.250-0.499 42.0 35.0 10 7 0.500-1.000 42.0 9 – 1.001-2.000 42.0 8 – 2.001-4.000 42.0 6 – 4.001-6.000 40.0 6 – 6061 F 0.250-3.000 – – – – Alclad 6061-O 0.010-0.020 ≤20 12.0 14 – 0.021-0.128 ≤20 12.0 16 – 0.129-0.499 ≤20 12.0 18 – 0.500-1.000 ≤22 – 18 – 1.001-3.000 ≤22 – 16 – Alclad 6061-T4 0.010-0.020 27.0 14.0 14 – 0.021-0.249 27.0 14.0 16 – Alclad 6061-T451 0.250-0.499 27.0 14.0 18 – 0.500-1.000 30.0 16.0 18 – 1.001-3.000 30.0 16.0 16 – Alclad 6061-T42 0.010-0.020 27.0 12.0 14 – 0.021-0.249 27.0 12.0 16 – 0.250-0.499 27.0 12.0 18 – 0.500-1.000 30.0 14.0 18 – 1.001-3.000 30.0 14.0 16 – Alclad 6061-T6, T62 0.010-0.020 38.0 32.0 8 – 0.021-0.249 38.0 32.0 10 – Alclad 6061-T6, T62 0.250-0.499 38.0 32.0 10 – 0.500-1.000 42.0 35.0 9 – 1.001-2.000 42.0 35.0 8 – 2.001-4.000 42.0 35.0 6 – 4.001-5.000 40.0 35.0 6 – Alclad 6061 F 0.250-3.000 – – – – Welding of 6061 Aluminum Alloy
Al-6061 alloy is easy to weld and connect by various methods. Usually welded with ER4043; For getting the best color matching, ER5356 is recommended.
The following table summarizes common similar metal welded joints made using inertial drive FRW.
Notes:
- Metal Loss: The total shortening of the workpiece during the welding process.
- Total Time: The sum of heating time plus welding time.
Inertia-driven friction welding parameters of two 25 mm (1 in.) diameter rods made of similar metals. Work Metal Spindle Speed, Rev/Min 5700 Aluminium Alloy 6061 Axial Force, KN (lbf x 103) 31 (7) Flywheel Size, kg·m2 (lb·ft2) 0.13 (3) Weld Energy, KJ (ft·lbf x 103) 23 (17) Metal Loss, mm (in.) 3.8 (0.15) Total Time, s 1 The following table gives parameters used for inertia welding several common dissimilar material combinations.
Note for Axial Force: A force of 22 KN (5000 lbf) is applied during the heating stage of the welding; the force near the end of the weld is subsequently increased to 67 KN (15000 LBF).
Inertia-driven friction welding parameters of two 25 mm (1 in.) diameter rods made of dissimilar metals. Work Metal Spindle Speed, Rev/Min 5500 Aluminum 6061 to type 302 stainless Axial Force, KN (lbf x 103) 22 (5) 67 (15) Flywheel Size, kg·m2 (lb·ft2) 0.16 (3.9) Weld Energy, KJ (ft·lbf x 103) 27 (20) Metal Loss, mm (in.) 5.1 (0.2) Total Time, s 3
Effect of welding conditions on the welding strength of AL-6061 alloy Base metal alloy and temper Thickness, mm (in.) Welding process and conditions As-welded Only aged after welding Postweld solution heat treated and aged Tensile strength, MPa (ksi) 0.2%, Yield strength, MPa (ksi) Elongation in 51 mm (2 in.), ≥% Tensile strength, MPa (ksi) 0.2%, Yield strength, MPa (ksi) Elongation in 51 mm (2 in.), ≥% Tensile strength, MPa (ksi) 0.2%, Yield strength, MPa (ksi) Elongation in 51 mm (2 in.), ≥% 6061-T6 (4043 Filler) 3.2 (1/8) DCEN GTAW, 15 mm/s (35 in./min) 248 (36) 165 (24) 6 – – – 303 (44) 276 (40) 5 6061-T4 (4043 Filler) 3.2 (1/8) DCEN GTAW, 8.5 mm/s (20 in./min) 234 (34) 145 (21) 8 283 (41) 179 (26) 3 303 (44) 276 (40) 5 6061-T6 (4043 Filler) 6.4 (1/4) Automatic GMAW, one pass each side 17 mm/s (40 in./min) 255 (37) 138 (20) 6 – – – 296 (43) 276 (40) 5 6061-T4 (4043 Filler) 76 (3) Automatic GMAW, multipass double-V 172 (25) 90 (13) 10 – – – 234 (34) – 4 6061-T6 (4643 Filler) 76 (3) Automatic GMAW, multipass double-V 186 (27) 97 (14) 13 – – – 310 (45) 276 (40) 4
Typical mechanical properties of gas shielded arc welded butt joints in selected heat-treated heat treatable aluminum alloys. Base alloy and temper Filler alloy As-welded Postweld solution heat treated and aged Tensile strength 0.2% Yield strength, in 50.8 mm (2 in.) Elongation Tensile strength 0.2% Yield strength, in 50.8 mm (2 in.) Elongation MPa (ksi) MPa (ksi) Tensile, ≥% in 50.8 mm (2 in.) Free bend, % MPa (ksi) MPa (ksi) Tensile, ≥% in 50.8 mm (2 in.) Free bend, % AA-6061-T4 4043 186 (27) 124 (18) 8 16 241 (35) ① 165 (24) ① 3 ① – AA-6061-T6 4043 186 (27) 124 (18) 8 16 303 (44) ② 276 (40) ② 5 ② 11 ② AA-6061-T6 5356 207 (30) 131 (19) 11 25 – – – – Notes:
- ① Postweld artificially aged only.
- ② For thicknesses greater than 19 mm (3/4 inch), 4643 filler is required.
Brushed aluminum plate: The manufacturing process of repeatedly scraping the aluminum plate out of the line with sandpaper. The main process of the process is divided into three parts: deesterification, sand mill, and water washing. In the aluminum sheet drawing process, the special film technology after anodizing can make a film layer containing the metal component on the surface of the aluminum sheet, and clearly show every fine wire mark, so that the metal matte shines with fine hair. Silky sheen. Alumina plate: The aluminum plate is formed by placing the aluminum plate in the corresponding electrolyte (such as sulfuric acid, chromic acid, oxalic acid, etc.) as an anode, and performing electrolysis under specific conditions and applied current. The aluminum plate of the anode is oxidized, and a thin layer of aluminum oxide is formed on the surface, the thickness of which is 5~20 microns, and the hard anodized film can reach 60~200 microns.
PS aluminum plate (advertisement aluminum plate, also known as printed zinc plate, newspaper plate): that is, an aluminum plate with a printed pattern on the back and a thickness of 025 or 03.
Mirror aluminum plate: refers to the aluminum plate that is processed by rolling, grinding and other methods to make the surface of the plate show a mirror effect. Embossed aluminum plate can also be called aluminum embossed plate: it is an aluminum product that forms various patterns on the surface after calendering on the basis of aluminum plate. It is widely used, mainly used in packaging, construction, curtain wall and so on.
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