Janka hardness rating scale - Revision history

Editor at 17:49, 28 July 2021

2021-07-28T17:49:51Z

← Older revision		Revision as of 17:49, 28 July 2021
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	* The differences between hardwood and softwood.		* The differences between hardwood and softwood.
	* The use of timber in construction.		* The use of timber in construction.
		+	* Vickers hardness rating scale.

	[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:DCN_Standard]] [[Category:Definitions]] [[Category:Standards_/_measurements]]		[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:DCN_Standard]] [[Category:Definitions]] [[Category:Standards_/_measurements]]

Editor at 17:00, 25 May 2021

2021-05-25T17:00:58Z

← Older revision		Revision as of 17:00, 25 May 2021
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	* Bamboo flooring.		* Bamboo flooring.
	* Hardwood.		* Hardwood.
		+	* Mohs scale of mineral hardness.
	* Oak wood properties.		* Oak wood properties.
	* Physical Properties of Wood.		* Physical Properties of Wood.

Designing Buildings at 11:28, 27 November 2020

2020-11-27T11:28:22Z

← Older revision		Revision as of 11:28, 27 November 2020
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	The hardness of a wood is rated on an industry wide standard known as the Janka hardness test. This test is used to measure a type of wood’s ability to resist dents and scratches.		The hardness of a wood is rated on an industry wide standard known as the Janka hardness test. This test is used to measure a type of wood’s ability to resist dents and scratches.

−	The Janka hardness rating scale was named ~~for~~ Gabriel Janka (1864–1932), an Austrian wood researcher. His work was based on similar studies conducted by August Brinell (1849 –1925), a Swedish metallurgical engineer.	+	The Janka hardness rating scale was named after Gabriel Janka (1864–1932), an Austrian wood researcher. His work was based on similar studies conducted by August Brinell (1849 –1925), a Swedish metallurgical engineer.

	Janka and Brinell were interested in the surface hardness of materials. In both instances, the men conducted tests based on the amount of pressure or effort required to press a steel ball into a certain substance to a specific depth.		Janka and Brinell were interested in the surface hardness of materials. In both instances, the men conducted tests based on the amount of pressure or effort required to press a steel ball into a certain substance to a specific depth.
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	At the hard end of the scale is Australian Buloke (5060) and in the softest range is balsa (70). The median rating is approximately 1290, which is the hardness of red oak.		At the hard end of the scale is Australian Buloke (5060) and in the softest range is balsa (70). The median rating is approximately 1290, which is the hardness of red oak.

−	The Janka scale has become an industry standard for comparing wood flooring. The scale is also useful in the construction industry~~, since it gives~~ builders a sense of how difficult it will be to work with different types of wood.	+	The Janka scale has become an industry standard for comparing wood flooring. The scale is also useful in the construction industry for giving builders a sense of how difficult it will be to work with different types of wood.

	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =

Editor at 11:19, 27 November 2020

2020-11-27T11:19:07Z

← Older revision		Revision as of 11:19, 27 November 2020
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	The Janka hardness test measures the force required to embed an 11.28 millimetres (0.444 in) diameter steel ball halfway into a sample of wood. This measurement is recorded and repeated several times until an average can be calculated. The end result is the Janka hardness rating.		The Janka hardness test measures the force required to embed an 11.28 millimetres (0.444 in) diameter steel ball halfway into a sample of wood. This measurement is recorded and repeated several times until an average can be calculated. The end result is the Janka hardness rating.

−	At the hard end of the scale is Australian Buloke (5060) and at the softest ~~end~~ is ~~Balsa~~ (22). The median rating is approximately 1290, which is the hardness of red oak.	+	At the hard end of the scale is Australian Buloke (5060) and in the softest range is balsa (70). The median rating is approximately 1290, which is the hardness of red oak.

	The Janka scale has become an industry standard for comparing wood flooring. The scale is also useful in the construction industry, since it gives builders a sense of how difficult it will be to work with different types of wood.		The Janka scale has become an industry standard for comparing wood flooring. The scale is also useful in the construction industry, since it gives builders a sense of how difficult it will be to work with different types of wood.

Editor at 10:56, 27 November 2020

2020-11-27T10:56:20Z

← Older revision		Revision as of 10:56, 27 November 2020
Line 7:		Line 7:
	The Janka hardness test measures the force required to embed an 11.28 millimetres (0.444 in) diameter steel ball halfway into a sample of wood. This measurement is recorded and repeated several times until an average can be calculated. The end result is the Janka hardness rating.		The Janka hardness test measures the force required to embed an 11.28 millimetres (0.444 in) diameter steel ball halfway into a sample of wood. This measurement is recorded and repeated several times until an average can be calculated. The end result is the Janka hardness rating.

−	At the ~~hardest~~ end of the scale is Australian Buloke (5060) and at the softest end is ~~Cuipo~~ (22). The median rating is approximately 1290, which is the hardness of red oak.	+	At the hard end of the scale is Australian Buloke (5060) and at the softest end is Balsa (22). The median rating is approximately 1290, which is the hardness of red oak.

	The Janka scale has become an industry standard for comparing wood flooring. The scale is also useful in the construction industry, since it gives builders a sense of how difficult it will be to work with different types of wood.		The Janka scale has become an industry standard for comparing wood flooring. The scale is also useful in the construction industry, since it gives builders a sense of how difficult it will be to work with different types of wood.

Editor: Created page with "The hardness of a wood is rated on an industry wide standard known as the Janka hardness test. This test is used to measure a type of wood’s ability to resist dents and scratch..."

2020-11-26T20:52:36Z

Created page with "The hardness of a wood is rated on an industry wide standard known as the Janka hardness test. This test is used to measure a type of wood’s ability to resist dents and scratch..."

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The hardness of a wood is rated on an industry wide standard known as the Janka hardness test. This test is used to measure a type of wood’s ability to resist dents and scratches.

The Janka hardness rating scale was named for Gabriel Janka (1864–1932), an Austrian wood researcher. His work was based on similar studies conducted by August Brinell (1849 –1925), a Swedish metallurgical engineer.

Janka and Brinell were interested in the surface hardness of materials. In both instances, the men conducted tests based on the amount of pressure or effort required to press a steel ball into a certain substance to a specific depth.

The Janka hardness test measures the force required to embed an 11.28 millimetres (0.444 in) diameter steel ball halfway into a sample of wood. This measurement is recorded and repeated several times until an average can be calculated. The end result is the Janka hardness rating.

At the hardest end of the scale is Australian Buloke (5060) and at the softest end is Cuipo (22). The median rating is approximately 1290, which is the hardness of red oak.

The Janka scale has become an industry standard for comparing wood flooring. The scale is also useful in the construction industry, since it gives builders a sense of how difficult it will be to work with different types of wood.

= Related articles on Designing Buildings Wiki =

* 11 things you didn't know about wood.
* Ash or Oak wood flooring.
* Bamboo flooring.
* Hardwood.
* Oak wood properties.
* Physical Properties of Wood.
* Softwood.
* The differences between hardwood and softwood.
* The use of timber in construction.

[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:DCN_Standard]] [[Category:Definitions]] [[Category:Standards_/_measurements]]