Rubber Wood Hardness Scale

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Rubber wood hardness scale.

3 eco friendly to the max. The janka hardness test measures the force required to embed a 444 inch steel ball to half its diameter in wood. Density hardness stiffness and strength hardness chart hardness chart acacia 1 750 lbs. Woods with a higher rating are harder than woods with a lower rating.

Furniture cabinetry interior millwork kitchen woodenware cutting boards knife blocks etc and other small specialty wood items. The scale used in the table is pounds force. The janka test measures the amount of force required to embed a 0 444 steel ball into the wood to half of its diameter. Rubberwood lumber is typically taken from rubber plantations where the trees are tapped for latex and harvested at the end of their useful life cycle typically after about thirty years.

The janka hardness test was conducted by measuring the amount of force necessary to embed a 444 inch steel ball into side of the wood up to one half of its diameter to determine its hardness rating which is then recorded on the janka hardness scale. In other words this wood is extremely eco friendly in the sense that we use what was supposed to go to waste. Rubberwood is a whitish lumber that gradually fades to a light brown over time. Wood hardness chart species alphabetical hardness species by hardness hardness mahogany honduran 800 padauk 1725 mahogany santos 2200 tabaccowood 1750 maple hard north american 1450 rosewood bolivian 1780 maple ivory 1500 bamboo carbonized 1800 maple soft 999 hickory 1820 merbau 1925 pecan 1820 mesquite 2345 yellowheart 1820.

To give some quantification to the issue of wood species hardness the lumber industry created the janka hardness scale a standard now widely accepted as the best means of ranking a wood s hardness. Tyres gumboots rubber bands rubber hoses the list goes on and on. The janka scale is used to determine the relative hardness of particular domestic or exotic wood species. Although classified as a hardwood alder is one of the softest of all hardwoods and is more commonly referred to as a semi hardwood.

Rubberwood is used only after it completes its latex producing cycle and dies. For beginners wood charts. It is one of the best measures of the ability of a wood species to withstand denting and wear. The rubber tree gets its name from the commercially harvested milky latex it exudes when cut.

The higher the number the harder the wood is this should be used as a general guide when comparing various species of wood flooring. There may be variations of more or less than 20 on the scale since this is a scientific test. On a hardness scale alder ranks just above pine and poplar.