6262 Aluminum Alloy Plate

6262 aluminium alloy is an alloy in the wrought aluminium-magnesium-silicon family (6000 or 6xxx series). It is related to 6162 aluminium alloy (Aluminum Association designations that only differ in the second digit are variations on the same alloy), but sees much more widespread use. It is notably distinct from 6162. and most other aluminium alloys, in that it contains lead in its alloy composition. It is typically formed by extrusion, forging, or rolling, but as a wrought alloy it is not used in casting. It can also be clad, but that is not common practice with this alloy. It cannot be work hardened, but is commonly heat treated to produce tempers with a higher strength but lower ductility.

Alternate names and designations include AlMg1SiPb and A96262. The alloy and its various tempers are covered by the following standards:

ASTM B 210: Standard Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes

ASTM B 211: Standard Specification for Aluminum and Aluminum-Alloy Bar, Rod, and Wire

ASTM B 221: Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes

ASTM B 483: Standard Specification for Aluminum and Aluminum-Alloy Drawn Tube and Pipe for General Purpose Applications

EN 573-3: Aluminium and aluminium alloys. Chemical composition and form of wrought products. Chemical composition and form of products

EN 754-2: Aluminium and aluminium alloys. Cold drawn rod/bar and tube. Mechanical properties

EN 755-2: Aluminium and aluminium alloys. Extruded rod/bar, tube and profiles. Mechanical properties

Chemical Composition:

Chemical Elements	Metric	English	Comments
Aluminum, Al	94.6 - 97.8 %	94.6 - 97.8 %	As remainder
Chromium, Cr	0.04 - 0.14 %	0.04 - 0.14 %
Copper, Cu	0.15 - 0.40 %	0.15 - 0.40 %
Iron, Fe	<= 0.70 %	<= 0.70 %
Lead, Pb	0.40 - 0.70 %	0.40 - 0.70 %
Magnesium, Mg	0.80 - 1.2 %	0.80 - 1.2 %
Manganese, Mn	<= 0.15 %	<= 0.15 %
Other, each	<= 0.05 %	<= 0.05 %
Other, total	<= 0.15 %	<= 0.15 %
Silicon, Si	0.40 - 0.80 %	0.40 - 0.80 %
Titanium, Ti	<= 0.15 %	<= 0.15 %
Zinc, Zn	<= 0.25 %	<= 0.25 %

Mechanical Properties:

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	103	103	500 kg load/10 mm ball
Hardness, Knoop	129	129	Estimated from Brinell
Hardness, Rockwell A	42	42	Estimated from Brinell
Hardness, Rockwell B	65	65	Estimated from Brinell
Hardness, Vickers	116	116	Estimated from Brinell
Tensile Strength, Ultimate	>= 310 MPa	>= 45000 psi
Tensile Strength, Yield	>= 296 MPa	>= 42900 psi
Elongation at Break	12 %	12 %
Modulus of Elasticity	69.0 GPa	10000 ksi	Average of Tension and Compression. In Al alloys, the compressive modulus is typically 2% greater than the tensile modulus
Poissons Ratio	0.33	0.33	Estimated from trends in similar Al alloys.
Machinability	70 %	70 %	0-100 Scale (A=90; B=70; C=50; D=30; E=10)
Shear Modulus	26.0 GPa	3770 ksi	Estimated from similar Al alloys.
Shear Strength	185 MPa	26800 psi	Estimated from ultimate tensile strength

Thermal Properties:

Thermal Properties	Metric	English	Comments
CTE, linear	23.4 µm/m-°C @Temperature 20.0 - 100 °C	13.0 µin/in-°F @Temperature 68.0 - 212 °F	AA; Typical; average over range
	25.0 µm/m-°C @Temperature 20.0 - 300 °C	13.9 µin/in-°F @Temperature 68.0 - 572 °F
Specific Heat Capacity	0.890 J/g-°C	0.213 BTU/lb-°F
Thermal Conductivity	170 W/m-K	1180 BTU-in/hr-ft²-°F	Estimated from other heat treatments.
Melting Point	582 - 651.7 °C	1080 - 1205 °F	AA; Typical range based on typical composition for wrought products >= 1/4 in. thickness. Eutectic melting can be eliminated by homogenization.
Solidus	582 °C	1080 °F	AA; Typical
Liquidus	651.7 °C	1205 °F	AA; Typical
Processing Properties	Metric	English	Comments
Annealing Temperature	416 °C	780 °F	hold at temperature 2 to 3 hr
Solution Temperature	538 °C	1000 °F	hold at temperature 8 to 12 hr
Aging Temperature	171 °C	340 °F	hold at temperature 8 to 12 hr

Application:

Screw machine products

Camera parts

Oil line fittings

Valves

Couplings

Nuts

Marine fittings

Hinge pins

Appliance fittings

Decorative hardware