Too Many Inputs using Finf Function

SGandCP={'Material' 'Specific Gravity (SG) [ - ]' 'Specific Heat (CP) [J/(g K)]'
'Aluminum' 2.70000000000000 0.897000000000000
'Copper' 8.96000000000000 0.385000000000000
'Lead' 11.3400000000000 0.129000000000000
'Nylon' 1.15000000000000 1.70000000000000
'Polypropylene' 0.946000000000000 1.92000000000000
'Steel' 7.95000000000000 0.477000000000000
'Zinc' 7.13000000000000 0.388000000000000}

[r,c]=SGandCP(find(SGandCP{:,1},'Steel'),2);
 
returns the error
"Too many input arguments"

How do I fix this?