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European birch is
Weight Hardness Comp.Strng. Bend.Strng. Stiffness When compared to
2% lighter 2% softer 2% stronger 1% stronger 2% stiffer Yellow birch
5% heavier 35% harder 46% stronger 37% stronger 29% stiffer Paper birch
50% heavier 108% harder 43% stronger 64% stronger 45% stiffer Red alder
31% heavier 86% harder 45% stronger 53% stronger 51% stiffer Alder
8% lighter 5% softer 9% stronger 9% stronger 11% stiffer American beech
2% lighter 6% softer 12% stronger 12% stronger 20% stiffer White ash
75% heavier 186% harder 112% stronger 128% stronger 140% stiffer Obeche
10% lighter 9% softer 12% stronger 11% stronger 16% stiffer White oak
2% lighter 4% softer 20% stronger 20% stronger 17% stiffer Northern red oak
40% heavier 127% harder 50% stronger 67% stronger 30% stiffer Yellow poplar

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