the material is  aluminum.

welding:braze welding

the list of the cooler

VOLVO:

209565521

20810099/5001868514/85000662/7420810095/5001873340

20810091/7420809775/85000665

20460178/20517350/10536920/20722444/10482258/20936055/21385165/21229195/21345260

1665249/1676436/20536961/8112566/8112960/8113186/8149681/8149370/85000328/8500328

20482259/20516408/20536915/20536948/8149326/8149362/85000325/850003229

1003579/1050097/20516414/20700605/20733349/20733351/20984815/4020201

1276435/1676435/1676543/1676635/8112961/8113190/8149683/81493262/8500327/98091801/200010117

SCANIA:

1327249/1397435/1408881/1442751/1764886

1741588/1527653/1784616

1365371/1439504/1516491/570468/570473/570482/7517001

1491710/1766125/1770096/1784615/1798689/1769999

cooler for VOLVO1030124