Calculating Hex Bar Weight

Hi...it is c/s area x length x density = theoritical weight of any section.

As hex bar is usually measured across flats which is the same as inscribed diameter the formula for area is 3.464 r squared where r = radius of inscribed circle or .5 of AF.

Hex. Bar Weight in Kgs / meter = 0.0068 x H x H

where H is across flat dimension in mm.

With best wishes

P.Rangasamy

Hex bars: Dimension indication in "Wrench width" (S)

Hex bar area: S² x √3 x 1/2

Hex bar volume: S² x √3 x 1/2 x L (Length)

Hex bar weigth: S² x √3 x 1/2 x L x density

Best regards,

John

According to my old Republic Steel data book, the weight of hex steel bars is (size in inches) squared, multiplied by a factor of 2.9445. This equals weight per foot (in pounds).

Steel weighs about 0.283 pounds per cubic inch.

Free cutting brass weighs 0.307 pounds and 2011 Aluminum weighs 0.102 pounds per cubic inch.

If you like to look into the formulas go to

http://www.algebralab.org/lessons/lesson.aspx?file=Geometry_AreaPerimeterRegularPolygons.xml

http://www.math-prof.com/AreaVolume/Hexagon.aspx

More web sites

http://www.google.com.au/search?hl=en&q=hexagonal+area+calculation&btnG=Search&meta=

More info

The Lesson:

The area and perimeter of a regular polygon can involve relatively simple figures such as an equilateral triangle or a square. A diagram below illustrates these concepts. To find the perimeter, we add the lengths of the sides. To find the area, we use for the triangle and s² for the square. The perimeter of the triangle is 3s and of the square 4s.


Because the triangle is equilateral, each angle is 60º. This allows us to calculate h in terms of s. The height h divides the equilateral triangle into two congruent 30-60-90 triangles, each with a hypotenuse of s and legs of h and . We have h . This gives us the area of the equilateral triangle as . If this calculation was unfamiliar, you may want to reference the lesson on the trigonometry of special triangles.

These cases where the number of sides of the regular polygon is 3 or 4 are easy to calculate. In fact, the area of a regular hexagon, in which the number of sides n = 6, is easy to calculate since a hexagon can be decomposed into 6 equilateral triangles. The area is .

To derive a formula for the area of a regular polygon if the number of sides is n requires applying some more trigonometry. We examine a diagram of a (partial) regular polygon of side s and number of sides n. A diagram is shown below. Assume that point O is the center of the regular polygon and r, the distance from the center to a vertex, is called the radius of the polygon. The perimeter is clearly ns. We derive a formula for the area in terms of the radius r.

After obtaining the area

Weight = area x length x density of the material used

I hope this helps

if we dont know about density, then what should we do for calculating the weight of hexagon nut.?

dia*dia*7.85*length Steel