As we know, stainless steel is a widely used material due to its high strength and excellent corrosion resistance, there are varieties of stainless steel grades to choose from depending on use, and these grades consist of different chemical compositions, such as Nickel, Chromium, Manganese, Molybdenum, Silicon, Titanium, Copper, Carbon, Nitrogen.
Alloy content determines density of stainless steel, some grades have the same densities, and some do not the same, so when we calculate the weight of stainless steel, they have different weights in the same size, for example, 304 and 316 stainless steel are not the same weight in the same size.
How to Calculate Stainless Steel Weight?
Some factors must be considered to calculate stainless steel weight.
- Shape
- Size
- Density
These are common stainless steel shapes Weight Calculation Formula.
Tube / Pipe
Round shape: W = (OD-T) x T x 0.0031416 x Density
Square shape: W = (OD x 4 / 3.14 -T) x T x 0.0031416 x Density
Rectangular shape: W = ((OD1+OD2) x 2 / 3.14 -T) x T x 0.0031416 x Density
Oval shape: W = ((OD of Oval-T) x T x 0.0031416 x Density
Elliptical Circumference = 2× 3.1415 × b + 4 × (a – b)
a = the long semi-axis (half of the long axis)
b = the short semi-axis (half of the short axis)
OD of Oval/Elliptical Tubing = Oval / Elliptical Circumference/3.1415
Plate / Sheet
W = T x Width (m) x Density
Round Bar
W = 0.0007854 x O.D. (mm) x O.D. (mm) x Density
Flat Bar
W = 0.001 x Width(mm) x T (mm) x Density
Hexagon Bar
W = 0.000866 x I.D. (mm) x I.D. (mm) x Density
Square Bar
W = 0.001 x Width (mm) x Width (mm) x Density
Where:
W = Theoretical Weight, in kg per meter
OD = Outside Diameter (mm)
T = Wall Thickness (mm)
Density: g/cm³
NOTE: the weight is Theoretical Weight because these shapes are not exact sizes, they have tolerances in the manufacturing process.
Related Resources
- The common size of stainless steel tube weight table chart
- Square tube
- Rectangular tube
- Oval tube
- Plate and sheet
- Bar