The most complete metal weight calculation formula

The most complete metal weight calculation formula

Some commonly used metal material weight calculation formulas:

Round steel weight (kg) =0.00617× diameter × diameter × length

Square steel weight (kg) =0.00785× side width × side width × length

Hexagonal steel weight (kg) =0.0068× opposite side width × opposite side width × length

Octagonal steel weight (kg) =0.0065× opposite side width × opposite side width × length

Rebar weight (kg) =0.00617× calculated diameter × calculated diameter × length

Angle steel weight (kg) =0.00785× (side width + side width-side thickness) × side thickness × length

Flat steel weight (kg) =0.00785× thickness × side width × length

Steel pipe weight (kg) =0.02466× wall thickness × (outer diameter - wall thickness) × length

Steel plate weight (kg) =7.85× thickness × area

Round purple copper rod weight (kg) =0.00698× diameter × diameter × length

Round brass rod weight (kg) =0.00668× diameter × diameter × length

Round aluminum rod weight (kg) =0.0022× diameter × diameter × length

Square purple copper rod weight (kg) =0.0089× side width × side width × length

Square brass rod weight (kg) =0.0085× side width × side width × length

Square aluminum rod weight (kg) =0.0028× side width × side width × length

Weight of hexagon purple copper rod (kg) =0.0077× width of opposite side × width of opposite side × length

Weight of hex brass bar (kg) =0.00736× side width × opposite side width × length

Weight of hexagonal aluminum rod (kg) =0.00242× opposite side width × opposite side width × length

Copper plate weight (kg) =0.0089× thickness × width × length

Brass plate weight (kg) =0.0085× thickness × width × length

Aluminum plate weight (kg) =0.00171× thickness × width × length

Round copper tube weight (kg) =0.028× wall thickness × (outer diameter - wall thickness) × length

Round brass tube weight (kg) =0.0267× wall thickness × (outer diameter - wall thickness) × length

Round aluminum tube weight (kg) =0.00879× wall thickness × (outer diameter - wall thickness) × length

Note: The length unit in the formula is meters, the area unit is square meters, and the remaining units are millimeters. The above weight x unit price of materials is the material fee, plus surface treatment + working hours of each process + packaging materials + shipping fee + tax + interest rate = quoted price (FOB).

The proportion of commonly used materials

Iron =7.85 Aluminum =2.7 copper =8.95 stainless steel =7.93

Stainless steel weight simple calculation formula

Stainless steel plate weight per square meter (kg) calculation formula: specific gravity × thickness (mm) × width (mm) × length (m)

Calculation formula of weight per meter (kg) of 304 and 321 tubes: 0.02491× wall thickness (mm) × (outer diameter - wall thickness) (mm)

Calculation formula of weight per meter (kg) of 316L and 310S tubes: 0.02495× wall thickness (mm) × (outer diameter - wall thickness) (mm)

Stainless steel per meter weight (kg) calculation formula: diameter (mm) × diameter (mm) × (nickel stainless: 0.00623; Chromium stainless: 0.00609)

The oretical weight calculation of steel

The unit of measurement for calculating the theoretical weight of steel is kilogram (kg). The basic formula is:

W (weight, kg) =F (section area mm²) ×L (length m) ×ρ (density g/cm³) ×1/1000

The theoretical weight calculation formula of various steels is as follows:

Round steel rod (kg/m)

W = 0.006165 * d * d

d= diameter mm

100mm diameter round steel, weight per m.

Weight per m =0.006165×100²=61.65kg

Rebar (kg/m)

W = 0.00617 * d * d

d= section diameter mm

Rebar with section diameter of 12mm, weight per m.

Weight per m =0.00617×12²=0.89kg

Square steel (kg/m)

W = 0.00785 * a * a

a= side width mm

Square steel with side width of 20mm, weight per m.

Weight per m =0.00785 ×20²=3.14kg

Flat steel (kg/m)

W = 0.00785 * b * d

b= side width millimeters

d= mm thick

Width 40mm, thickness 5mm flat steel, weight per m.

Weight per m =0.00785×40×5=1.57kg

Hexagonal steel (kg/m)

W = 0.006798 * s * s

s= distance from opposite side mm

For hexagonal steel with a distance of 50mm from the opposite side, find the weight per m.

Weight per m =0.006798×502=17kg

Octagonal steel (kg/m)

W = 0.0065 * s * s

s= distance from opposite side mm

The octagonal steel with a distance of 80mm on the opposite side is required to obtain the weight per m. Weight per m =0.0065×802=41.62kg

Equal Angle steel (kg/m)

W=0.00785×[d (2b-d)+0.215(R2-2r2)]

b= side width

d= side thickness

R= inner arc radius

r= radius of the end arc

Find the weight per m of 20mm x 4mm equilateral Angle steel. From the metallurgical product catalog, it is found that the R of 4mm×20mm equilar Angle steel is 3.5 and 1.2, then the weight per m =0.00785×[4× (2× 20-4) +0.215× (3.52-2×1.2²)]=1.15kg

Unequal Angle steel (kg/m)

W=0.00785×[d (B+b - d) +0.215 (R² - 2r²)]

B= long side width

b= short side width

d= side thickness

R= inner arc radius

r= radius of the end arc

Find the weight per m of 30mm×20mm×4mm unequal Angle steel. From the metallurgical product catalog, the R of 30×20×4 unequal Angle steel is 3.5 and r is 1.2, then the weight per m =0.00785×[4× (30+20-4) +0.215× (3.52-2×1.2 2)]=1.46kg

Channel steel (kg/m)

W =0.00785×[hd + 2t (b-d)+0.349(R2-r2)]

h= High

b= leg length

d= waist thickness

t= average leg thickness

R= inner arc radius

r= radius of the end arc

Find the weight per m of 80mm x 43mm x 5mm channel steel. From the metallurgical product catalog found that the channel steel t is 8, R is 8, r is 4, then the weight per m =0.00785×[80×5+2×8× (43 -- 5) +0.349× (82 -- 4²)]=8.04kg

I-beam steel (kg/m)

W=0.00785×[hd+2t (b - d) +0.615 (R² - r²)]

h= High

b= leg length

d= waist thickness

t= average leg thickness

R= inner arc radius

r= radius of the end arc

Find the weight of 250mm×118mm×10mm I-steel per m. From the metal material manual, it is found that the I-steel t is 13, r is 10, and r is 5, then the weight per m = 0.00785×[250×10+2×13× (118-10) +0.615× (10² - 5²)]=42.03kg

Steel plate (kg/m²)

W = 7.85 x d

d= thickness

Thickness of 4mm steel plate, weight per m². Weight per m² =7.85×4=31.4kg

Steel pipe (including seamless steel pipe and welded steel pipe) (kg/m)

W=0.02466×S (D - S)

D= outside diameter

S= wall thickness

A seamless steel pipe with an outer diameter of 60mm and a wall thickness of 4mm is obtained per m weight.

Weight per m = 0.02466×4× (60-4) =5.52kg