diff --git a/compact/solenoid.xml b/compact/solenoid.xml
index e1490ea92c79f49579e0eceef2f42e8ab05d2e19..42303bdf33def3d3316b842c7136b2e8f7297c77 100644
--- a/compact/solenoid.xml
+++ b/compact/solenoid.xml
@@ -162,13 +162,13 @@
         inner_r="SolenoidBarrelCoilFormer_rmin" 
         outer_z="SolenoidBarrelCoilFormer_zmax" 
         vis="SolenoidCryostatVis">
-        <slice material="Steel235" thickness="SolenoidBarrelCoilFormerThickness"/>
+        <slice material="Aluminum" thickness="SolenoidBarrelCoilFormerThickness"/>
       </layer>
       <layer id="8" 
         inner_r="SolenoidBarrelCoil_rmin" 
         outer_z="SolenoidBarrelCoil_zmax" 
         vis="SolenoidCryostatVis">
-        <slice material="Copper" thickness="SolenoidBarrelCoilThickness"/>
+        <slice material="Aluminum" thickness="SolenoidBarrelCoilThickness"/>
       </layer>
       <layer id="9" 
         inner_r="SolenoidBarrelCoilOverbind_rmin"