diff --git a/metal_peg/model.sdf b/metal_peg/model.sdf
index 5591378..b3596b9 100644
--- a/metal_peg/model.sdf
+++ b/metal_peg/model.sdf
@@ -24,10 +24,9 @@
         </geometry>
         <surface>
           <contact>
-            <!-- Red Pine coefficients according to
-                 http://www.fpl.fs.fed.us/documnts/fplgtr/fplgtr113/ch04.pdf -->
-            <poissons_ratio>0.347</poissons_ratio>
-            <elastic_modulus>8.8e+09</elastic_modulus>
+            <!-- stainless steel 18-8 material properties -->
+            <poissons_ratio>0.305</poissons_ratio>
+            <elastic_modulus>2.0e+11</elastic_modulus>
             <ode>
               <kp>100000</kp>
               <kd>100</kd>