Color profile: Generic CMYK printer profile Composite 200 lpi at 45 degrees europeanmillproducts 100 100 95 95 75 75 25 25 5 5 2xxx Plate 0 2xxx 0 2XXX series alloys contain copper as the main alloying element, often in combination with magnesium and silicon. Corrosion: 2XXX alloys are susceptible to corrosion and may be require protective surface treatments such as anodising or painting. Strength: Strength is developed through solution treatment and natural ageing (T351, T451) or artificial age hardening (T651, T851). Strength levels in the naturally aged alloys may be further increased by artificial ageing, but this reduces fatigue properties and toughness. 2XXX alloys are generally used where good levels of strength and toughness are required. The most widely used alloys in this series are 2014A, 2017A and 2024. Applications include: Machined parts Truck wheels Load cells Welding: With the exception of a few specialised alloys the 2XXX series alloys are not generally weldable by fusion welding. 100 100 95 95 75 75 25 25 5 5 0 0 2xxx.ps I:\Alcoa\betetlapok\2xxx.cdr 2005. jœnius 3. 13:51:08 Color profile: Generic CMYK printer profile Composite 200 lpi at 45 degrees europeanmillproducts 100 100 95 95 75 75 2xxx series alloys technical data 25 5 25 STANDARD DIMENSIONAL AVAILABILITY 5 0 0 Alloy Temper Min Thickness (mm) Max Thickness (mm) Max Width (mm) 6.35 T651 2014 2014A T652 13 3150 >13 72 2978 >72 188 2954* 188 203.2 1104* >203.2 305 6.35 2017A T451 3150 >12 69 2978 >69 180 2942* >180 194 1101* 6.35 2024 T351 T851 1220** 12 10 3150 >10 59 2978 >59 154 2958* >154 168 1101* Max Length (mm) Alcoa Europe only supply plate that exceeds the requirements issued by the major specifying authorities e.g. European Standards (a summary of the main requirements of EN485 is available on request). 20000 3000 20000 20000 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. The above alloys are only available in Mill Finish 3. * denotes maximum width decreases with increasing thickness 4. ** denotes wider widths may be available on request FORMABILITY 2014/2014A, 2017A AND 2024 2014 and 2014A are commonly supplied in the T651 temper, offering a higher level of strength than 6XXX, and good toughness. Alcoa can also supply 2014/2014A in O condition, which gives good formability and permits further strengthening by means of heat treatment. 2017A and 2024 are characterised by high levels of strength and toughness, allied to good fatigue properties. Because they develop good levels of strength through natural ageing they are usually supplied in the T451 and T351 conditions respectively. Strength in 2024 can be further increased by means of artificially ageing, but this is achieved at the expense of fatigue properties and toughness. Fatigue resistance is higher in 2024 T351 compared to 2017A T451. These alloys are often selected when fatigue is an important consideration and are widely used for other engineering applications. Thickness Alloy Temper 6 mm 9 mm 12 mm 2014A T651 8t 8.5t 9t 2017A T451 7t 7.5t 8t 2024 T351 7t 7.5t 8t 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. Advice and further details on Alcoa's specialised alloys is available on request. TYPICAL PHYSICAL PROPERTIES 100 95 Alloy Temper 2014A 2017A 2024 T651 T451 T351 Relative Density 2.81 2.81 2.77 Co-efficient or Linear Expansion (20°C - 100°C) 10-6/°C 22.0 23.6 23.0 Thermal Conductivity (0-100°C) W/m°C Electrical Resistivity (20°C) microOhm cm Melting Range °C Young's Modulus (GPa) 159 134 151 4.5 5.0 5.7 530-610 510-640 500-640 74 72 73 75 100 95 75 25 European Mill Products 5 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 2xxx.ps I:\Alcoa\betetlapok\2xxx.cdr 2005. jœnius 3. 13:51:19