diff -u -r1.1 -r1.2
--- svt_chamber.gdml	8 May 2013 22:58:53 -0000	1.1
+++ svt_chamber.gdml	12 Jun 2013 20:49:16 -0000	1.2
@@ -2,13 +2,28 @@

 <!-- 
   SVT vacuum chamber, based on Maurik's GDML file.
   @author Sho Uemura <[log in to unmask]>

-  @version $Id: svt_chamber.gdml,v 1.1 2013/05/08 22:58:53 meeg Exp $

+  @version $Id: svt_chamber.gdml,v 1.2 2013/06/12 20:49:16 meeg Exp $

 -->
 <gdml xmlns:gdml="http://cern.ch/2001/Schemas/GDML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://www.lcsim.org/schemas/gdml/1.0/gdml.xsd" >
 
     <define/>
 
     <materials>

+        <element Z="26" formula="Fe" name="Iron" >
+            <atom value="55.845" />
+        </element>
+        <element Z="24" formula="Cr" name="Chromium" >
+            <atom value="51.9961" />
+        </element>
+        <element Z="28" formula="Ni" name="Nickel" >
+            <atom value="58.6934" />
+        </element>
+        <material formula=" " name="Stainless_304" >
+            <D value="8.00" />
+            <fraction n="0.733078" ref="Iron" />
+            <fraction n="0.191516" ref="Chromium" />
+            <fraction n="0.075406" ref="Nickel" />
+        </material>

         <material Z="1" name="G4_Galactic" state="gas">
             <T unit="K" value="2.73"/>
             <P unit="pascal" value="3e-18"/>

@@ -60,7 +75,7 @@

 
     <structure>
         <volume name="svt_chamber_vol">

-            <materialref ref="G4_Galactic"/>

+            <materialref ref="Stainless_304"/>

             <solidref ref="svt_chamber"/>
         </volume>
         <volume name="world_volume" >