Abstract: The invention relates to a method for producing a stamped component of motor vehicle bodywork or body structure from aluminium alloy comprising the steps of producing a metal sheet or strip of thickness between 1.0 and 3.5 mm in an alloy of composition (% by weight): Si: 0.60-0.85; Fe: 0.05-0.25; Cu: 0.05-0.30; Mn: 0.05-0.30; Mg: 0.50-1.00; Ti: 0.02-0.10; V: 0.00-0.10 with Ti+V?0.10, other elements each <0.05, and <0.15 in total, remainder aluminium, with Mg<?2.67×Si+2.87, dissolving and steeping, pre-tempering, maturation for between 72 hours and 6 months, stamping, tempering at a temperature of around 205° C. with a hold time between 30 and 170 minutes or tempering at a time-temperature equivalent, painting and “bake hardening” of the paints at a temperature of 150 to 190° C. for 15 to 30 minutes.

Abstract: The invention relates to the process for manufacturing a rolled product based on an aluminum alloy, in particular for the automotive industry wherein, successively, a bath of liquid metal made from an aluminum-based alloy. The invention also relates to the products obtained by this process and the use thereof for the manufacture of a motor vehicle.

Abstract: The subject matter of the invention is a sheet for stamped lining or structural parts for an auto body stilled referred to as a body-in-white, made of aluminum alloy having the following composition (% by weight): Si: 0.85-1.20, Fe: <0.30, Cu: 0.10-0.30, Mg: 0.70-0.90, Mn: <0.3; Zn: 0.9-1.60, V: 0.02-0.30, Ti: 0.05-0.20, other elements <0.05 each and <0.15 total, balance aluminum, having, after solution heat treatment, quenching, pre-aging or reversion, possible aging at ambient temperature for 72 hours to 6 months, 2% controlled tensile pre-deformation, and paint baking treatment for 20 minutes at 185° C., an elastic limit Rpo.2 of at least 300 MPa. The sheets according to the invention make it possible to reduce the thickness of the parts while still meeting all the other required properties.

Abstract: The invention relates to a method for manufacturing a stamped motor vehicle bodywork or shell-structure component made of an aluminium alloy, comprising the steps of manufacturing a metal sheet or strip with a thickness of 0 to 3.5 mm made of an alloy with the following composition (wt %): Si: 0.60-0.85; Fe: 0.05-0.25; Cu: 0.05-0.30; Mn: 0.05-0.30; Mg: 0.50-0.00; Ti: 0.02-0.15; V: 0.00-0.15; other elements <0.05 each and <0.15 in total, remainder aluminium, with Mg<?2.67×Si+2.87, solution heat treating and quenching, pre-tempering, ageing for 72 hours to 6 months, stamping, tempering at a temperature of around 205° C. with a dwell time of 180 to 480 minutes or tempering at an equivalent time and temperature, painting and “bake hardening” at a temperature of 150 to 190° C. for 15 to 30 min. The invention also relates to a stamped motor vehicle bodywork or shell-structure component, further referred to as “body in white” produced by such a method.

Abstract: The invention relates to a method for producing a stamped component of motor vehicle bodywork or body structure from aluminium alloy comprising the steps of producing a metal sheet or strip of thickness between 1.0 and 3.5 mm in an alloy of composition (% by weight): Si: 0.60-0.85; Fe: 0.05-0.25; Cu: 0.05-0.30; Mn: 0.05-0.30; Mg: 0.50-1.00; Ti: 0.02-0.10; V: 0.00-0.10 with Ti+V?0.10, other elements each <0.05, and <0.15 in total, with the remainder aluminium, with Mg<?2.67×Si+2.87, dissolving and steeping, pre-tempering, maturation for between 72 hours and 6 months, stamping, tempering at a temperature of around 205° C. with a hold time between 30 and 170 minutes or tempering at a time-temperature equivalent, painting and “bake hardening” of the paints at a temperature of 150 to 190° C. for 15 to 30 minutes. The invention also relates to a stamped component of motor vehicle bodywork or body structure, also called a “body in white” produced by such a method.

Abstract: The invention relates to a method for manufacturing a stamped motor vehicle bodywork or shell-structure component made of an aluminium alloy, comprising the steps of manufacturing a metal sheet or strip with a thickness of 0 to 3.5 mm made of an alloy with the following composition (wt %): Si: 0.60-0.85; Fe: 0.05-0.25; Cu: 0.05-0.30; Mn: 0.05-0.30; Mg: 0.50-0.00; Ti: 0.02-0.15; V: 0.00-0.15; other elements <0.05 each and <0.15 in total, remainder aluminium, with Mg<?2.67×Si+2.87, solution heat treating and quenching, pre-tempering, ageing for 72 hours to 6 months, stamping, tempering at a temperature of around 205° C. with a dwell time of 180 to 480 minutes or tempering at an equivalent time and temperature, painting and “bake hardening” at a temperature of 150 to 190° C. for 15 to 30 min. The invention also relates to a stamped motor vehicle bodywork or shell-structure component, further referred to as “body in white” produced by such a method.

Abstract: The invention relates to an impact-absorbing structure for a vehicle, the structure of which comprises at least one side rail for supporting a bumper crossbeam, the side rail being a hollow profile member arranged according to the longitudinal axis of the vehicle, the impact-absorbing structure including the bumper crossbeam, at least one absorber placed between the side rail and the bumper crossbeam, the absorber being a hollow profile member intended for deforming in the event of an impact, one end of the profile member being intended to be inserted into the open end of the side rail, the end of the profile member being attached to the side rail via transversely arranged attachment means, and an attachment insert provided with opposing surfaces. Each of the opposing surfaces of the insert is provided with two transverse recesses arranged perpendicular to the opposing surfaces, and offset relative to one another.

Abstract: The subject matter of the invention is a sheet for stamped lining or structural parts for an auto body stilled referred to as a body-in-white, made of aluminum alloy having the following composition (% by weight): Si: 0.85-1.20 Fe: <0.30 Cu: 0.10-0.30 Mg: 0.70-0.90 Mn: <0.30 Zn: 0.9-1.60 V: 0.02-0.30 Ti: 0.05-0.20 other elements <0.05 each and <0.15 total, balance aluminum, having, after solution heat treatment, quenching, pre-aging or reversion, possible aging at ambient temperature for 72 hours to 6 months, 2% controlled tensile pre-deformation, and paint baking treatment for 20 minutes at 185° C., an elastic limit Rp0.2 of at least 300 MPa. The sheets according to the invention make it possible to reduce the thickness of the parts while still meeting all the other required properties.

Abstract: The invention relates to an impact-absorbing structure for a vehicle, the structure of which comprises at least one side rail for supporting a bumper crossbeam, the side rail being a hollow profile member arranged according to the longitudinal axis of the vehicle, the impact-absorbing structure including the bumper crossbeam, at least one absorber placed between the side rail and the bumper crossbeam, the absorber being a hollow profile member intended for deforming in the event of an impact, one end of the profile member being intended to be inserted into the open end of the side rail, the end of the profile member being attached to the side rail via transversely arranged attachment means, and an attachment insert provided with opposing surfaces. Each of the opposing surfaces of the insert is provided with two transverse recesses arranged perpendicular to the opposing surfaces, and offset relative to one another.

Abstract: Bumper crossbeam (10, 10?), having a plane of symmetry (Y) and globally oriented in a direction (T) perpendicular to the plane of symmetry (Y), comprising two attachment areas (12a, 12b) symmetrically arranged with respect to the plane of symmetry (Y) and distant from each other by a distance D, said beam being designed to absorb the energy dissipated by a shock generated by a force substantially horizontal and oriented in a direction (L) perpendicular to said direction (T), made from a globally tubular body (11) with a monotonically varying nominal cross-section (Sn) over most of its length between said attachment areas (12a, 12b), except in two weakened areas (15a, 15b), which are symmetrical with respect to the plane of symmetry (Y), which are remote from the said plane of symmetry by a distance of between 0.10*D and 0.40*D, wherein the second moment of area about the axis (Z) perpendicular to the plane (L, T) is lower in the said weakened areas than expected from the nominal cross-section.

Abstract: A motor vehicle bumper with a crossmember (1) in channel form and a front element (2), which is mounted in front of said crossmember and is in channel form, said crossmember and front element together forming a pedestrian protection system, characterized in that, in the assembled state, the front element (2) has a greater overall height (h2) than the crossmember (1), and the rear part (3a, 3b), which faces the crossmember, of the upper and lower wall regions of said front element are inclined from the horizontal towards the crossmember (1).

Abstract: A motor vehicle bumper with a crossmember (1) in channel form and a front element (2), which is mounted in front of said crossmember and is in channel form, said crossmember and front element together forming a pedestrian protection system, characterized in that, in the assembled state, the front element (2) has a greater overall height (h2) than the crossmember (1), and the rear part (3a, 3b), which faces the crossmember, of the upper and lower wall regions of said front element are inclined from the horizontal towards the crossmember (1).

Abstract: Bumper crossbeam (10, 10?), having a plane of symmetry (Y) and globally oriented in a direction (T) perpendicular to the plane of symmetry (Y), comprising two attachment areas (12a, 12b) symmetrically arranged with respect to the plane of symmetry (Y) and distant from each other by a distance D, said beam being designed to absorb the energy dissipated by a shock generated by a force substantially horizontal and oriented in a direction (L) perpendicular to said direction (T), made from a globally tubular body (11) with a monotonically varying nominal cross-section (Sn) over most of its length between said attachment areas (12a, 12b), except in two weakened areas (15a, 15b), which are symmetrical with respect to the plane of symmetry (Y), which are remote from the said plane of symmetry by a distance of between 0.10*D and 0.40*D, wherein the second moment of area about the axis (Z) perpendicular to the plane (L, T) is lower in the said weakened areas than expected from the nominal cross-section.

Abstract: A bumper system having a bumper running transverse to the longitudinal direction of a vehicle and at least one connecting element mounted thereon for the purpose of attaching the bumper to a vehicle, in particular to a longitudinal beam of a passenger car. The connecting element is a multi-chamber extruded section of metal with longitudinal axis running in the longitudinal direction of the vehicle. The connecting element is in the form of a safety element which, under impact, absorbs impact energy by compressive deformation. For the purpose of connecting a towing device, an attachment member is provided that is situated in one of the hollow chambers of the connecting element.

Abstract: A bumper system having a bumper running transverse to the longitudinal direction of a vehicle and at least one connecting element mounted thereon for the purpose of attaching the bumper to a vehicle, in particular to a longitudinal beam of a passenger car. The connecting element is a multi-chamber extruded section of metal with longitudinal axis running in the longitudinal direction of the vehicle. The connecting element is in the form of a safety element which, under impact, absorbs impact energy by compressive deformation. For the purpose of connecting a towing device, an attachment member is provided that is situated in one of the hollow chambers of the connecting element.

Abstract: A metal sheet for a motor vehicle body outer panel, having a thickness ranging between 0.8 and 1.2 mm, containing, in wt. %, Fe 0.25-0.40 and preferably 0.25-0.35; Si 0.90-1.20 and preferably 0.95-1.10; Cu 0.10-0.25 and preferably 0.15-0.20; Mg 0.35-0.50 and preferably 0.40-0.50; Mn 0.05-0.20 and preferably 0.08-0.15; other elements<0.05 each and <0.15 in total, the rest being aluminum. The sheet has, after solution heat treatment, quenching, pre-tempering or reversion, and maturation at room temperature for 3 weeks to 6 months, an L R0.2 direction yield strength less than 160 MPa, and preferably less than 150 MPa. A yield strength>180 MPa can be obtained on the body stamping part after the paint has been cured. The sheet of the invention enables a reduction in the thickness of parts while satisfying all the other required properties.