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- Janka_hardness_test abstract "The Janka hardness test measures the resistance of a sample of wood to denting and wear. It measures the force required to embed an 11.28mm (.444 in) steel ball into wood to half the ball's diameter. This method leaves an indentation. A common use of Janka hardness ratings is to determine whether a species is suitable for use as flooring. The hardness of wood varies with the direction of the wood grain. Testing on the surface of a plank, perpendicular to the grain, is said to be of "side hardness". Testing the cut surface of a stump is called a test of "end hardness".The results are stated in various ways, which can lead to confusion, especially when the name of the actual units employed is often not attached. In the United States, the measurement is in pounds-force (lbf). In Sweden it is in kilograms-force (kgf), and in Australia, either in newtons (N) or kilonewtons (kN). Sometimes the results are treated as units, for example "660 Janka".The Janka Hardness test results tabulated below were done in accordance with ASTM D 1037-12 testing methods. Lumber stocks tested ranges from 1" to 2" thick. The tabulated Janka Hardness numbers are an average. There is a standard deviation associated with each species, but these values are not given. It is important to note no testing was done on actual flooring. Other factors affect how flooring performs: the type of core for engineered flooring such as pine, HDF, poplar, oak, birch; grain direction and thickness; floor or top wear surface, etc. The chart is not to be considered an absolute; it is meant to help people understand which woods are harder than others.".
- Janka_hardness_test thumbnail Janka_hardness_test.jpg?width=300.
- Janka_hardness_test wikiPageExternalLink fplgtr113.pdf.
- Janka_hardness_test wikiPageExternalLink fpl_rn303.pdf.
- Janka_hardness_test wikiPageExternalLink janka.htm.
- Janka_hardness_test wikiPageID "3739769".
- Janka_hardness_test wikiPageRevisionID "602670968".
- Janka_hardness_test hasPhotoCollection Janka_hardness_test.
- Janka_hardness_test subject Category:Hardness_tests.
- Janka_hardness_test subject Category:Wood.
- Janka_hardness_test subject Category:Woodcarving.
- Janka_hardness_test subject Category:Woodworking.
- Janka_hardness_test type Abstraction100002137.
- Janka_hardness_test type Cognition100023271.
- Janka_hardness_test type Experiment105798043.
- Janka_hardness_test type HardnessTests.
- Janka_hardness_test type HigherCognitiveProcess105770664.
- Janka_hardness_test type Inquiry105797597.
- Janka_hardness_test type ProblemSolving105796750.
- Janka_hardness_test type Process105701363.
- Janka_hardness_test type PsychologicalFeature100023100.
- Janka_hardness_test type Thinking105770926.
- Janka_hardness_test type Trial105799212.
- Janka_hardness_test comment "The Janka hardness test measures the resistance of a sample of wood to denting and wear. It measures the force required to embed an 11.28mm (.444 in) steel ball into wood to half the ball's diameter. This method leaves an indentation. A common use of Janka hardness ratings is to determine whether a species is suitable for use as flooring. The hardness of wood varies with the direction of the wood grain.".
- Janka_hardness_test label "Dureté Janka".
- Janka_hardness_test label "Durezza di Janka".
- Janka_hardness_test label "Janka hardness test".
- Janka_hardness_test label "Janka".
- Janka_hardness_test label "Janka".
- Janka_hardness_test label "Janka-Härte-Test".
- Janka_hardness_test label "Teste de dureza Janka".
- Janka_hardness_test label "Тест твёрдости Янка".
- Janka_hardness_test sameAs Janka-Härte-Test.
- Janka_hardness_test sameAs Janka.
- Janka_hardness_test sameAs Dureté_Janka.
- Janka_hardness_test sameAs Durezza_di_Janka.
- Janka_hardness_test sameAs Janka.
- Janka_hardness_test sameAs Teste_de_dureza_Janka.
- Janka_hardness_test sameAs m.09ycp3.
- Janka_hardness_test sameAs Q71948.
- Janka_hardness_test sameAs Q71948.
- Janka_hardness_test sameAs Janka_hardness_test.
- Janka_hardness_test wasDerivedFrom Janka_hardness_test?oldid=602670968.
- Janka_hardness_test depiction Janka_hardness_test.jpg.
- Janka_hardness_test isPrimaryTopicOf Janka_hardness_test.
