As we know, stainless steel is a wide used material due to their high strength and excellent corrosion resistance, there are varieties of stainless steel grade to choose depending on use, 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, some not the same, so when we calculate weight of stainless steel, they have different weight 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?
There are 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
Stainless Steel Density
Stainless steel density refers to substance mass per unit volume, it is one of typical property of stainless steel, commonly, density of stainless steel range from 7600 kg/m3 to 8000 kg/m3.
Stainless steel is a wide used material, containing at least 10.5% of Chromium, and other elements added to form stainless steel structure, these elements have Carbon, Silicon, Manganese, Phosphorus, Sulfur, Nickel, Molybdenum, Titanium and Copper, it is noted as high strength and excellent corrosion resistance.
Densities change depending on these alloy elements changing, different alloy content have different density value, even it is the same grade, it is difficult to calculate accurate density values, theoretic density value is given below for reference.
Stainless Steel Density Table Chart
|
GRADE |
DENSITY ( G / CM3 ) |
DENSITY ( KG / M3 ) |
DENSITY ( Lb/In3 ) |
|
201 202 301 302 303 304 304L 304LN 305 321 |
7.93 |
7930 |
0.286 |
|
309S 310S 316 316L 316Ti 316LN 317 317L 347 |
7.98 |
7980 |
0.288 |
|
904L |
7.98 |
7980 |
0.288 |
|
2205 S31803 |
7.80 |
7800 |
0.282 |
|
S32750 |
7.85 |
7850 |
0.284 |
|
403 410 410S 416 431 |
7.75 |
7750 |
0.280 |
|
440A |
7.74 |
7740 |
0.280 |
|
440C |
7.62 |
7620 |
0.275 |
|
420 |
7.73 |
7730 |
0.280 |
|
439 430 430F |
7.70 |
7700 |
0.278 |
|
434 |
7.74 |
7740 |
0.280 |
|
444 |
7.75 |
7750 |
0.280 |
|
405 |
7.72 |
7720 |
0.279 |
*These densities given at standard conditions for temperature and pressure condition.
304 And 316 Stainless Steel Densities
304 and 316 are the most used stainless steel grades, their densities are not the same, this decide by chemical composition and content, stainless steel 304 density is 7930 kg / m3, 316 density is 7980 kg / m3, so when calculating stainless steel weight, it is different between 304 and 316 stainless steel.
Stainless Steel Density Conversion, Kg/M3, G/Cm3 And Lbs/In3
Density of stainless steel calculated by dividing the mass by the volume, usually measured in g/cm3, kg/m3, and lbs/in3, each unit can be converted to other units.
Conversion: 1 kg/m3 = 0.001 g/cm3 = 1000 g/m3 = 0.000036127292 lbs/in3.
Density Relations With Temperature And Pressure
Densities of stainless steel vary by changing either the temperature or the pressure, in general, increasing the temperature decreases the density, increasing the pressure always increases the density.
Post time: Dec-19-2022
