Hard Maple

  

Acer saccharum

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Strength and Mechanical Properties (inch-pound)a
 
Moisture Content
Green - 12%
 
Specific Gravityb
0.52 - 0.63
 
Static Bending
    Modulus of Rupture (lbf/in2)
    7,900 - 15,800
 
    Modulus of Elasticityc (106 lbf/in2)
    1.33 - 1.83
 
    Work to Maximum Load (in-lbf/in3)
    12.5 - 16.5		 Impact Bending (in.)
39 - 48
 
Compression Parallel to Grain (lbf/in2)
3,270 - 7,830
 
Compression Perpendicular to Grain (lbf/in2)
600 - 1,470
 
Shear Parallel to Grain (lbf/in2)
1,130 - 2,330
 
Tension Perpendicular to Grain (lbf/in2)
-- - 720
 
Side Hardness (lbf)
840 - 1,450
  1. Results of tests on small clear specimens in the green and air-dried conditions. Definition of properties: impact bending is height of drop that causes complete failure, using 0.71-kg (50-lb) hammer; compression parallel to grain is also called maximum crushing strength; compression perpendicular to grain is fiber stress at proportional limit; shear is maximum shearing strength; tension is maximum tensile strength; and side hardness is hardness measured when load is perpendicular to grain.
  2. Specific gravity is based on weight when ovendry and volume when green or at 12% moisture content.
  3. Modulus of elasticity measured from a simply supported, center-loaded beam, on a span depth ratio of 14/1. To correct for shear deflection, the modulus can be increased by 10%.
Source: Wood Handbook, Wood as an Engineering Material, USDA Forest Service