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Janka Hardness The Wood Database

Janka hardness testing. The actual number listed in the wood profile is the amount of pounds-force (lb f) or newtons (N) required to imbed a .444″ (11.28 mm) diameter steel ball into the wood to half the ball’s diameter. This number is given for wood that has been dried to a 12% moisture content, unless otherwise noted. For reference, white oak has a Janka hardness of 1,350 lb f (5,990 N

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Janka hardness test Wikipedia

124 行· 16/01/2006· The Janka hardness test (from the Austrian-born emigrant Gabriel Janka,

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Janka Hardness chart for Exotic Wood and

22/07/2020· Janka Hardness. The Janka scale is used to determine the relative hardness of particular domestic or exotic wood species. The Janka test measures the amount of force required to embed a 0.444" steel ball into the wood to half of its diameter. Woods with a higher rating are harder than woods with a lower rating. The scale used in the table is pounds-force. Janka Specie Name; 350: Buckeye

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Janka Hardness Scale Definition and

06/05/2017· The scale was created to show the Janka hardness test results. The test computes the pounds of force (lbf) one requires to drive one 0.444” steel ball into a 2”x2”x6” wood. The higher the force one needs in order to push the ball halfway into the wood, the harder it is. The wood’s hardness usually varies according to the wood grain’s direction. So, when testing is done on the wood

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Janka Hardness Chart by FindAnyFloor

The Janka test measures the hardness of wood so that wood species can be compared to one another. The Janka chart is commonly used in the flooring industry to compare hardwood flooring types. Although not exact, the scale is a good reference for which hardwood can better withstand denting and wear when compared with another wood species. The higher the Janka rating, the more dent and wear

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What is the Janka Wood Scale? — Kingdom

21/08/2018· The Janka Hardness Scale may lead people to believe this would be a bad flooring choice, when in all actuality, it may be the perfect one! Home B uses a fairly hard wood, such as Brazilian Cherry (2820 on the Janka Scale). The owners are not known for cleaning up after themselves and maintain a highly active lifestyle. Six years after the installation, the floor looks terrible and may need

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Janka Scale Janka Hardness Janka Lumber Scale

The Janka Test was developed as a variation of the Brinell hardness test. The test measures the force required to push a steel ball with a diameter of 11.28 millimeters (0.444 inches) into the wood to a depth of half the ball’s diameter. The diameter was chosen to produce a circle with an area of 100 square millimeters. The Janka hardness values have been indicated below for your reference.

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Janka hardness using nonstandard specimens

tween Janka hardness and the hardness modulus specified in ASTM D 1037. Procedures Hardness tests were conducted using indentations on the wide face of 2×4s at thickness values of 1, 1.5, and 3 in. The 1-in. data were obtained by planing the 1.5-in. 2×4 on the side opposite the indentations; the 3-in. results were ob- tained by either “stacking” the specimen to be tested on top of

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Relative Wood Hardness Table PreciseBits

285 行· The Janka Side Hardness test measures the force required to press an 11.28mm (0.444

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White Willow The Wood Database Lumber

Janka Hardness: 570 lb f (2,530 N) Modulus of Rupture: 8,150 lb f /in 2 (56.2 MPa) Elastic Modulus: 1,125,000 lb f /in 2 (7.76 GPa) Crushing Strength: 3,900 lb f /in 2 (26.9 MPa) Shrinkage: Radial: 4.2%, Tangential: 7.2%, Volumetric: 11.5%, T/R Ratio: 1.7. Color/Appearance: Heartwood is tan to pinkish brown. The sapwood is yellowish white, and is not always clearly or sharply demarcated from

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Understanding the Janka Wood Hardness Scale

For reference, when comparing two types of wood like Hickory and Chestnut, Hickory has a Janka wood hardness rating of 1820 while Chestnut has a rating of 540, therefore, from this scenario, we can conclude that Hickory is the more resistant wood. The Janka rating is also a good indication of how hard the wood will be to saw or nail.

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Wood Hardness, Part 4: Janka vs Brinell Hardwood Floors

05/01/2018· When wood scientists and wood science textbooks talk about wood hardness, it’s almost universally (from my experience anyway) a reference to Janka hardness. However, there’s another test known as the Brinell hardness test, named after Swedish engineer Johan August Brinell. The ASTM test for Brinell hardness is ASTM E10, but please note that this test is specifically for metallic objects

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Janka hardness test Wikipedia

The Janka hardness test (from the Austrian-born emigrant Gabriel Janka, 1864–1932) measures the resistance of a sample of wood to denting and wear. It measures the force required to embed an 11.28 millimetres (0.444 in) diameter steel ball halfway into a sample of wood. A common use of Janka hardness ratings is to determine whether a species is suitable for use as flooring.

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Getting (Really!) Technical: Wood Hardness, Part 4: Janka

When wood scientists and wood science textbooks talk about wood hardness, it's almost universally (from my experience anyway) a reference to Janka hardness. However, there's another test known as the Brinell hardness test, named after Swedish engineer Johan August Brinell. The ASTM test for Brinell hardness is ASTM E10, but please note that this test is specifically for metallic objects

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Relative Wood Hardness Table PreciseBits

The Janka Side Hardness test measures the force required to press an 11.28mm (0.444 inch) steel ball to half its diameter cross-grain into a block of wood. This force is recorded in both pounds-force (lbf) and kilo-Newtons (kN). We have found this to be one of the best measures of the ability of wood species to withstand denting and wear. It is also a good indicator of how hard a species is to

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Wood hardness testing

Wood hardness testing I have always been meaning to figure out a simple way to characterize the strength of some of the wood that I use. Looking around on the web, there is the well established Janka hardness test. This test involves pushing a steel sphere of 11.28 millimeters half way into a piece of wood. Doing this requires a specialized

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JANKA HARDNESS SCALE PDF kazmifo

The Industry Standard for Hardness The hardness of a wood is rated on an industry wide standard known as the Janka test. The Janka test measures the force. The Janka Scale is a comprehensive chart of hardness ratings for a huge variety of wood species used for hardwood floors. Learn how to read it and how it. The Janka scale is used to determine the relative hardness of particular domestic or

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Madison Wood Types

The Janka scale rates the relative hardness of wood. We have listed some of the most popular choices in wood flooring and included some more exotic species for your reference and comparison. The higher the number the harder the wood. These ratings were determined using the Janka Hardness Test which measures the side hardness measure of the force required to embed a .444 inch steel ball to half

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What Is the Hardest Wood in the World? Reference

25/03/2020· Wood hardness is calculated using the Janka scale, which measures the force required to embed an 11.28 millimeter steel ball into wood to half the ball's diameter. The hardest wood commercially available in the United States is hickory. Hardwood species are used for furniture and flooring due to their resistance to wear and tear.

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Apple The Wood Database Lumber Identification

Janka Hardness: 1,730 lb f (7,700 N) Modulus of Rupture: 12,800 lb f /in 2 (88.3 MPa) Elastic Modulus: 1,270,000 lb f /in 2 (8.76 GPa) Crushing Strength: 6,030 lb f /in 2 (41.6 MPa) Shrinkage: Radial: 5.6%, Tangential: 10.1%, Volumetric: 17.6%, T/R Ratio: 1.8. Color/Appearance: Heartwood can vary from a light reddish or grayish brown to a deeper red/brown. The grain of Apple is sometimes seen

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