Mr Wizard, the Janka Scale please . . . http://mimi.com/mra/green/janka.pdf
Or for those who don't like reading . . . (sorry, no soft maple listed)
But wait, there's more:
"Hard maple" is the common term for two species of maple trees: Sugar Maple (Acer saccharum) andnegundo), and Bigleaf maple (Acer macrophyllum)."
Black Maple (Acer nigrum). Hard maple is commonly used in the manufacture of flooring, furniture,
cabinets, billiard cues, and other finished wood products. "Soft maple" is the common term for four
species of maple trees: Silver maple (Acer saccharinum), Red maple (Acer rebrum), Boxelder (Acer