You are correct. I researched it further, and it seems soft maple ranges from around 700 lbs to 950. I think red maple ranges harder(which is what I had, not silver), while silver is lower in hardness. Silver has a kind of shaggy bark I believe, while the red is smoother and light grey.
Silver maple? I don't think so. Maybe you're burning red maple?
Your figures are in error.
First error: we were discussing _silver_ maple specifically. "Soft" maple can be any of several species, primarily Acer saccharinum (silver) and A. rubrum (red). There is a *huge* difference in hardness and density between the two.
Second error: those figures are for red maple. As noted above, we are discussing _silver_ maple, for which the corresponding figures are SG: 0.47 Side hardness: 700 lbs
700 is "about 2/3" of 1010, no?
Third error: you read the wrong line in the table. The other hardness figures you cited are for 12% moisture content, but this one is for green lumber. The correct figure is 950 lbs, not 660.
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