{"id":111,"date":"2008-12-18T18:00:49","date_gmt":"2008-12-19T00:00:49","guid":{"rendered":"http:\/\/www.wood-database.com\/?p=111"},"modified":"2025-07-02T01:21:58","modified_gmt":"2025-07-02T06:21:58","slug":"cocobolo","status":"publish","type":"post","link":"https:\/\/www.wood-database.com\/cocobolo\/","title":{"rendered":"Cocobolo"},"content":{"rendered":"\t\t
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\n\t\t\t\t\t<\/i><\/a> > Hardwoods<\/a> > Fabaceae<\/a> > Dalbergia <\/em><\/a>> <\/strong>retusa<\/em>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\tDATA SOURCE(S):<\/a> <\/span>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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\"Cocobolo<\/a>
Cocobolo (Dalbergia retusa)<\/em><\/figcaption><\/figure>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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Common Name(s):<\/strong><\/a> Cocobolo (many variant spellings, such as cocabola or cocobola)<\/p>\n

Scientific Name:<\/strong><\/a> Dalbergia retusa<\/i><\/p>\n

Distribution:<\/strong><\/a> Central America<\/p>\n

Tree Size:<\/strong><\/a> 45\u201360 ft (14\u201318 m)<\/span> tall,
                     1.5\u20132 ft (.5\u2013.6 m)<\/span> trunk diameter<\/p>\n

Specific Gravity (Basic, 12% MC):<\/strong>SPECIFIC GRAVITY<\/b>
Specific gravity is the ratio of a wood\u2019s density to water (with water being 1.00). Two values are provided: basic SG (oven-dry weight & green volume) and SG at 12% MC (weight & volume at 12% moisture content).

Click on the link “Specific Gravity” for more details.<\/span><\/a> 0.89, 1.1<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Average Dried Weight:<\/strong>AVERAGE DRIED WEIGHT<\/b>
\nDensity is the measurement of a wood\u2019s weight per unit volume. Here, \"dried weight\" specifically refers to wood at 12% moisture content, and values are given in pounds per cubic foot and kilograms per cubic meter. Also keep in mind that density commonly varies by +\/- 10% from the average.
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\nClick on the link \"Average Dried Weight\" for more details.<\/span><\/a> 68.5 lbs\/ft3<\/sup> (1,095 kg\/m3<\/sup>)<\/span> Very High WEIGHT TIERS<\/b>
\nExtremely Low:<\/b>     0+ kg\/m3<\/sup>
\nVery Low:<\/b>   420+ kg\/m3<\/sup>
\nLow:<\/b>   520+ kg\/m3<\/sup>
\nMedium-Low:<\/b>   620+ kg\/m3<\/sup>
\nMedium:<\/b>   730+ kg\/m3<\/sup>
\nMedium-High:<\/b>   840+ kg\/m3<\/sup>
\nHigh:<\/b>   960+ kg\/m3<\/sup>
\nVery High:<\/b> 1,080+ kg\/m3<\/sup>
\nExtremely High:<\/b> 1,200+ kg\/m3<\/sup>
\n<\/span> Tiers are based on CSIRO provisional strength groupings (SD1-SD8) based on density.<\/i> <\/span> <\/span><\/p>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Janka Hardness:<\/strong>JANKA HARDNESS<\/b>
\nThis test measures a wood\u2019s resistance to indentation, and is the pounds of force (or Newtons) required to embed a .444\" (11.28 mm) diameter steel ball halfway into the wood. Values are for side grain, measured at 12% MC.
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\nClick on the link \"Janka Hardness\" for more details.<\/span><\/a> 2,960 lbf<\/sub> (14,140 N)<\/span> Very High JANKA HARDNESS TIERS<\/b>
\nExtremely Low:<\/b>      0+ N
\nVery Low:<\/b>  2,050+ N
\nLow:<\/b>  3,150+ N
\nMedium-Low:<\/b>  4,480+ N
\nMedium:<\/b>  6,280+ N
\nMedium-High:<\/b>  8,380+ N
\nHigh:<\/b> 11,080+ N
\nVery High:<\/b> 14,000+ N
\nExtremely High:<\/b> 17,450+ N
\n<\/span> Tiers are derived from CSIRO provisional strength classifications (SD1-SD8) in conjunction with the USDA's estimated hardness based on density.<\/i> <\/span> <\/span><\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Modulus of Rupture:<\/strong>MODULUS OF RUPTURE<\/b>
\nSometimes called bending strength, this test measures a wood\u2019s strength before breaking (i.e., rupturing). Values are given in pounds of force per square inch and megapascals, measured at 12% MC.
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\nClick on the link \"Modulus of Rupture\" for more details.<\/span><\/a> 22,910 lbf<\/sub>\/in2<\/sup> (158 MPa)<\/span>* Extremely High MOR TIERS<\/b>
\nExtremely Low:<\/b>   0+ MPa
\nVery Low:<\/b>  45+ MPa
\nLow:<\/b>  55+ MPa
\nMedium-Low:<\/b>  65+ MPa
\nMedium:<\/b>  78+ MPa
\nMedium-High:<\/b>  94+ MPa
\nHigh:<\/b> 110+ MPa
\nVery High:<\/b> 130+ MPa
\nExtremely High:<\/b> 150+ MPa
\n<\/span> Tiers are based on CSIRO strength classifications (SD1-SD8).<\/i> <\/span> <\/span><\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Elastic Modulus:<\/strong>MODULUS OF ELASTICITY<\/b>
\nThis test measures the wood\u2019s level of deformation when under a given load. Higher values indicate less deformation (i.e., stiffer). Values are given in pounds of force per square inch and gigapascals, measured at 12% MC.
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\nClick on the link \"Elastic Modulus\" for more details.<\/span><\/a> 2,712,000 lbf<\/sub>\/in2<\/sup> (18.7 GPa)<\/span>* Very High MOE TIERS<\/b>
\nExtremely Low:<\/b>    0+ GPa
\nVery Low:<\/b>  7.9+ GPa
\nLow:<\/b>  9.1+ GPa
\nMedium-Low:<\/b> 10.5+ GPa
\nMedium:<\/b> 12.5+ GPa
\nMedium-High:<\/b> 14.0+ GPa
\nHigh:<\/b> 16.0+ GPa
\nVery High:<\/b> 18.5+ GPa
\nExtremely High:<\/b> 21.5+ GPa
\n<\/span> Tiers are based on CSIRO strength classifications (SD1-SD8).<\/i> <\/span> <\/span><\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Crushing Strength:<\/strong>CRUSHING STRENGTH<\/b>
\nAlso called compression strength, this test measures the maximum stress sustained before failure. Force is applied parallel<\/i> to the grain (producing stress akin to chair legs). Values are given in pounds of force per square inch and megapascals, measured at 12% MC.
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\nClick on the link \"Crushing Strength\" for more details.<\/span><\/a> 11,790 lbf<\/sub>\/in2<\/sup> (81.3 MPa)<\/span>* Extremely High CRUSHING STRENGTH TIERS<\/b>
\nExtremely Low:<\/b>  0+ MPa
\nVery Low:<\/b> 30+ MPa
\nLow:<\/b> 36+ MPa
\nMedium-Low:<\/b> 41+ MPa
\nMedium:<\/b> 47+ MPa
\nMedium-High:<\/b> 54+ MPa
\nHigh:<\/b> 61+ MPa
\nVery High:<\/b> 70+ MPa
\nExtremely High:<\/b> 80+ MPa
\n<\/span> Tiers are based on CSIRO strength classifications (SD1-SD8).<\/i> <\/span> <\/span><\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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*values from tentative strength group assessment per South American Timbers<\/i>[1]<\/sup><\/a>Berni, C. A., Bolza, E., & Christensen, F. J. (1979). South American timbers: The properties, uses, and characteristics of 190 species. p. 86. Commonwealth Scientific and Industrial Research … Continue reading<\/span><\/span><\/span>