Color profile: Generic CMYK printer profile Composite 200 lpi at 45 degrees europeanmillproducts 100 100 95 95 75 75 25 25 6xxx Plate 5 5 0 0 6xxx 6XXX contain magnesium and silicon as the major alloying elements. Strength: Moderately high levels of strength are obtained through heat treating to the T651 condition, giving higher strength levels than 5XXX series alloys. Machinability: 6XXX plate alloys in the T651 condition are easier to machine than 5XXX alloys. Forming: 6XXX plate alloys can be cold formed in the T651 or T451 temper. Formability is better in the T451 than the T651 temper and increases with decreasing thickness (see overleaf). Corrosion resistance: 6XXX alloys, in the T651/T652/T6 temper, have good corrosion resistance. Unlike some 5XXX alloys, 6XXX do not suffer degradation in corrosion resistance after exposure to elevated temperatures. Welding: 6XXX are readily weldable by either GTA-W or GMA-W processes provided that a suitable filler material is used. Welding reduces the tensile strength to 165-200 MPa in the heat affected area. In special circumstances, a post weld heat treatment can be applied to restore some of the lost strength in this area. 6XXX Applications: The principle 6XXX plate alloys are 6082 and 6061. 6082-T651 and 6061-T651 are now superseding low-carbon steels in structural applications where the benefits of lightness, specific stiffness, corrosion resistance and ease of fabrication can be exploited: Machined components Structural members Cargo containers 100 100 95 95 75 75 25 25 5 5 0 0 6xxx.ps I:\Alcoa\betetlapok\6xxx.cdr 2005. jœnius 3. 12:13:49 Color profile: Generic CMYK printer profile Composite 200 lpi at 45 degrees europeanmillproducts 100 100 95 95 75 75 6xxx series alloys technical data 25 25 5 5 0 STANDARD DIMENSIONAL AVAILABILITY Alloy 6082 6061 Temper Width (mm) Thickness (mm) Length (mm) Min Max Max Max Mill finish 19 6.35 3150 T451 105 >19 20000 2978 T651 203.2 >105 2973* 305 T452 T652 >203.2 3000 1220** 404 >203.2 T6 3000 2080 590 >6.35 F 3000 2080 Brushed Finish (available one or two side film coated - on request) 50 8 T451 T651 8000 1600* 70 8 T4 T6 8000 2000* Mill finish 25 6.35 3150 T451 138 >25 20000 2978 T651 >138 203.2 2973* 305 T452 T652 >203.2 3000 1220** >203.2 404 T6 3000 2080 >6.35 590 F 3000 2080 Brushed Finish (available one or two side film coated - on request) 8 70 T451 T651 8000 1600* 8 70 T4 T6 8000 2000* 0 Material in the T6 temper has not been stress relieved by either controlled stretching or cold compression. Consequently, this product may be liable to distortion and/or cracking during any metal machining or metal removing process. Alcoa does not accept any liability for such distortion or cracking and will not accept any consequential costs, losses or personal injury claims from such. 1. These dimensions show only the range of capabilities and cannot necessarily be provided in every combination of these sizes. Other sizes may be available, subject to enquiry. 2. Where indicated, both Mill Finish and Brushed Finish are available 3. * denotes maximum width decreases with increasing thickness 4. ** denotes wider widths may be available on request FORMABILITY Thickness Alloy 6061 6061 6082 6082 Temper T451 T651 T451 T651 6 mm 3t 3.5t 3t 3.5t 9 mm 3.5t 4.5t 3.5t 4.5t 12 mm 4t 5t 4t 5t Radii expressed as thickness (t) are minimum recommended for bending plates in a standard press brake with air bend dies. Minimum permissible radii will also vary with design and condition of tooling. Forming over smaller radii is possible immediately after solution heat treatment and quenching. TYPICAL PHYSICAL PROPERTIES Alloy Temper Relative Density 100 95 75 25 5 6061 6082 T651 T651 2.7 2.7 Co-efficient or Linear Expansion (20°C-100°C) -6 10 /°C Thermal Conductivity (0-100°C) W/m°C 24 23 156 184 Electrical Resistivity (20°C) microOhm cm 4 3.7 Melting Range °C Young's Modulus (GPa) 100 570-650 570-660 69 69 95 75 European Mill Products Avenue Giuseppe Motta 31-33 CH-1202 Geneva, Switzerland Tel.: +41 22 919 60 00 Fax: +41 22 919 61 00 0 25 www.alcoa.com/emp 5 0 6xxx.ps I:\Alcoa\betetlapok\6xxx.cdr 2005. jœnius 3. 12:13:59